CN104317764B - A kind of real-time control method of 1553B buses asynchronous message - Google Patents
A kind of real-time control method of 1553B buses asynchronous message Download PDFInfo
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- CN104317764B CN104317764B CN201410532782.3A CN201410532782A CN104317764B CN 104317764 B CN104317764 B CN 104317764B CN 201410532782 A CN201410532782 A CN 201410532782A CN 104317764 B CN104317764 B CN 104317764B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
- G06F13/4234—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being a memory bus
Abstract
The invention discloses a kind of real-time control method of 1553B buses asynchronous message, the existing transmission to 1553B bus asynchronous messages is examined with Hardware I P to control, the clearing of transmission and RT service request bits and vector font including aperiodic message, the real-time response and RT mode bits and vector font that ensure that RT service requests are reset in time.Compared with by control of the host computer to realize asynchronous communication, the transmission of aperiodic message is realized by BC condition message, the execution of condition message only needs the very short time, and the real-time transmission of aperiodic message can be achieved, while also can ensure that transmission timing of the aperiodic message in bus.The service request bit of status word and vector font realize that real-time is good, it is ensured that the timely clearing of service request bit and vector font, avoids the reprocessing of the same service requests of RT by RT hardware Protection Counter Functions.The control method realizes the control of whole process within hardware, can simplify the architecture design of system.
Description
Technical field
The invention belongs to avionics field, more particularly to a kind of real-time controlling party of 1553B buses asynchronous message
Method.
Background technology
1553B buses are a kind of time-devision system instruction/response type multiplex data buses, because of its high reliability and real-time
It is widely used in avionic device.A bus control unit (BC) can be mounted in each bus, several (are no more than 31
It is individual) it is used for connecting subsystem and data bus enters the remote terminal (RT) of row data communication, typically also mount a bus monitoring
Device (BM).Wherein, BM is used for the communications status for monitoring each node.
For BC as the communication in master devices controlling bus, RT can only carry out the communication of data under BC control, RT without
Method directly actively initiates communication.RT asynchronous messages then send asynchronous service request method using RT or BC timings are looked into if any processing
Inquiry mode is realized.In asynchronous service request method, RT is notified total by the way that the service request bit of status word is set into logic 1
Lane controller BC, BC are instructed to receive RT vector font, vector after status word is received by way of inserting and sending vector font
Word defines the content of RT requests.And BC timing inquiry modes, then to be BC instruct by way of periodicity sends vector font come
RT vector font is inquired about periodically.RT vector font can be obtained by both the above mode BC, passes through the parsing to vector font, group
Corresponding aperiodic message is sent in hair-weaving, realizes the processing to the special asynchronous service needed for RT.To prevent from repeatedly asking, RT is timely
The service request bit of status word and vector font are zeroed out.
The key of both the above asynchronous message processing mode is the organizing transmission of non-periodic messages and the clothes of RT status words
Business request position and the timely clearing of vector font.At present, general way is by interrupting or inquiring about, and is realized by host computer whole
The control of process.By the insertion of PC control BC aperiodic message, there is uncertain, delay in the transmission of aperiodic message
It is larger, poor real.By the service request bit of PC control RT status words and the clearing of vector font, due to needing software and hardware to hand over
Mutually, processing time is longer, if the reprocessing that may result in the same service requests of RT can not be reset in time, causes the bus cycles
Waste.Meanwhile whole processing procedure is required to host computer to be controlled, system architecture complex designing.
The content of the invention
The invention aims to solve in asynchronous message processing procedure, prior art controls BC non-by host computer
The transmission of periodic messages and the service request bit of RT status words and the clearing of vector font, it is impossible to ensure the transmission of aperiodic message
Sequential, poor real, RT request can not be reset in time, the problem of system architecture complex designing.
To achieve these goals, the invention provides a kind of real-time control method of 1553B buses asynchronous message, with hard
Part IP kernel realizes the transmission control to 1553B bus asynchronous messages, includes transmission and the RT service request bits of aperiodic message
With the clearing of vector font, the real-time response and RT mode bits and vector font that ensure that RT service requests are reset in time.
The BC of IP kernel is designed with condition message, for realizing the automatic transmission of aperiodic message.
RT has the service request bit of status word and the hardware clear mode of vector font, and the clearing of wherein vector font has three kinds
Mode：Detect that different instructions resets, detects that synchronous mode instructs clearing, subaddressing request processing to complete to reset.
Detect that different instructions is reset, i.e. RT detects other instructions in addition to sending the mode of vector font and instructing
Afterwards, vector font is zeroed out；Detect that synchronous mode instructs clearing, i.e. when RT detects that synchronous mode instructs, to arrow
Amount word is zeroed out；It is right after the completion of acquiescence is using the request processing of RT subaddressings in the case that above two mode does not enable
Vector font is zeroed out.
The real-time control method of the 1553B buses asynchronous message, including asynchronous service request method and timing issuer
Formula.
Under asynchronous service request method, BC and RT control information and message content are configured in advance；BC is used
Condition message will send vector font and aperiodic message, and a message chained list is formed with periodic messages, and according to message chained list group
Knit the transmission of message；Enabled services request position and vector font hardware clear mode are wanted to RT, the clearing mode of vector font is set, often
The mask value of individual RT subaddressings vector font and the vector font pointer to be removed；During proper communication, BC is carried out according to message chained list
The transmission of message, when going to condition message every time, a condition judgment can be carried out, according to the result of judgement and advance setting
Carry out the transmission control of message.
When RT does not have service request, the condition of condition message is unsatisfactory for, and BC is toward only sending periodic messages in bus；RT has clothes
During business request, according to RT data content construction RT vector font, then the service request position 1 by RT status words；Now condition
The condition of message meets that BC can perform the aperiodic message for sending vector font and asynchronous communication；RT, which is received, sends vector font
When mode instructs, the service request bit of status word can be reset automatically；Then RT can be set to carry out according to the related of vector font
The clear operation of vector font, or instructed by way of BC sends a synchronization to synchronize, complete an asynchronous message
Processing.
Under timing inquiry mode, BC is instructed to inquire about RT vector by way of sending vector font in periodic messages
Word, it is not necessary to handle the service request bit of status word.
BC condition message includes, perform the pointer of message when condition is unsatisfactory for, perform when condition meets message pointer,
The pointer of conditional object, the mask value of condition, the fiducial value of condition, condition meet number.
The specific determination methods whether BC condition message meets are referred to according to the conditional object set in condition message
Pin, obtain conditional object；Conditional object and condition mask phase with result made comparisons with the condition fiducial value set, if equal
Condition meets that otherwise condition is unsatisfactory for.
BC realizes the automatic transmission of aperiodic message with condition message, i.e. when BC performs condition message, not toward in bus
Data are sent, only carry out the judgement of condition；If condition and number meet simultaneously, referred to according to the message set in condition message
Pin, an aperiodic message when condition meets is performed, realizes the automatic transmission of aperiodic message, is otherwise continued executing with next
Periodic messages.
RT removes the service request bit of status word automatically, i.e. RT preserves the information of status word, is reset when being arranged to hardware
When, RT receive send vector font mode instruct after, the service request bit of status word is reset, and is risen together with vector font one
It is sent in bus, while updates the status word of preservation.
RT removes vector font automatically, i.e., the mask of vector font corresponding to each subaddressings of RT can be set in RT data structure
The pointer of value and the vector font to be reset, the construction of mask value is identical with vector word format specified in GJB289 agreements or user
It is self-defined, the clearing for vector font；Meanwhile RT preserves the vector font of last transmission, is transmitted across for identifying vector font；
RT determines the clearing to vector font jointly according to the mask value of the vector font of preservation and vector font, if necessary to reset then according to
The clearing mode of the vector font of setting, is reset vector font by the sensing of pointer.
The real-time control method of the 1553B buses asynchronous message, comprise the following steps under asynchronous service request method：
(1) setting of BC message before communication starts, including：BC periodic messages, the setting of aperiodic message, BC condition messages
Setting and whole message chained list setting.
Chained list starts as periodic messages, is followed by several condition messages, condition message according to the difference of Rule of judgment,
Different aperiodic message is pointed to by pointer.The pointer of last condition message points to the periodic messages of beginning or for same
The periodic messages of step.
The condition of wherein first condition message is set to the service request position 1 for the status word that judgement receives, and condition is full
The mode that toe pin points to transmission vector font instructs, and condition is unsatisfactory for pointing to second condition message.Opened from second condition message
Begin, condition is arranged to according to RT subaddressings, judges to receive the setting that vector font corresponds to subaddressing respectively, condition meets pointer
The aperiodic message of the subaddressing is pointed to, is unsatisfactory for pointing to next condition message.
(2) RT configuration before communication starts, enabled services request position and vector font hardware clear mode, select vector font
Clearing mode, the pointer of the mask value of vector font and the vector font to be reset corresponding to RT subaddressings is set.
Wherein, the construction of mask value and vector word format or user-defined vector font lattice specified in GJB289 agreements
Formula is identical.The pointer of vector font is the address of vector font in RT subaddressings 0 or 31.
(3) proper communication, BC send periodic messages according to the message chained list of setting, and when RT does not have service request, condition disappears
The condition of breath is unsatisfactory for, and BC is toward only sending periodic messages in bus.
(4) in communicating, when RT subsystems have asynchronous message to need processing, if having data to send, RT ends host computer
By data renewal to RT data storage area, the vector font of construction RT subaddressings 0 or 31, afterwards by the service request of RT status words
Position 1.
The condition of (5) first condition messages meets that the mode that now BC transmissions once send vector font instructs.
(6) after RT receives which instruction, the service request bit of status word is reset, and is sent together with vector font
Onto bus, while preserve the vector font of transmission.
(7) BC continues executing with next condition message, judges that the subaddressing of vector font corresponds to whether position is set, if set
The aperiodic message of the sub subaddressing is then performed, if being not provided with continuing executing with next condition message.
(8) RT resets mode according to the vector font of selection and is zeroed out operation, and the vector font for judging to preserve is not zero, according to
The pointer of the vector font of setting and the mask value set, data bit corresponding with this subaddressing in vector font is reset.
(9) repeat step (7) and (8) are completed to all RT to be communicated until having performed last condition message
The inquiry of address, and the transmission of corresponding aperiodic message.
(10) asynchronous message processing terminate, or are instructed by way of sending a synchronization to terminate.Positive normal open
Repeat step (3) arrives (10) always in letter.
The real-time control method of the 1553B buses asynchronous message, comprise the following steps under timing inquiry mode：
(1) setting of BC message before communication starts, including：BC periodic messages, the setting of aperiodic message, BC condition messages
Setting and whole message chained list setting.
Chained list starts to instruct for the mode of periodic messages and transmission vector font, is followed by several condition messages, condition
The state of position is corresponded in vector font for each RT subaddressings, condition meets that pointer points to the aperiodic message of the subaddressing, is discontented with
Toe is to next condition message.The pointer of last condition message points to the periodic messages started or the cycle for synchronization
Message.
(2) RT configuration before communication starts, enables vector font hardware clear mode, selects the clearing mode of vector font, if
Put the pointer of the mask value of vector font corresponding to RT subaddressings and the vector font to be reset.
Wherein, the construction of mask value and vector word format or user-defined vector font lattice specified in GJB289 agreements
Formula is identical.The pointer of vector font is the address of vector font in RT subaddressings 0 or 31.
(3) proper communication, BC send periodic messages according to the message chained list of setting, and when RT does not have service request, condition disappears
The condition of breath is unsatisfactory for, and BC instructs toward a transmission periodic messages in bus and the mode of transmission vector font.
(4) in communicating, when RT subsystems have asynchronous message to need processing, if having data to send, RT ends host computer
By data renewal to RT data storage area, the vector font of construction RT subaddressings 0 or 31.
(5) when the mode for going to transmission vector font in BC cycles instructs, RT vector font is inquired.
(6) BC performs first condition message, judges whether the subaddressing 1 of vector font is set, and son is performed if setting
The aperiodic message of address 1, if being not provided with continuing executing with next condition message.
(7) RT resets mode according to the vector font of selection and is zeroed out operation, and the vector font for judging to preserve is not zero, according to
The pointer of the vector font of setting and the mask value set, data bit corresponding with this subaddressing in vector font is reset.
(8) repeat step (6) and (7) are completed to all RT to be communicated until having performed last condition message
The inquiry of address, and the transmission of corresponding aperiodic message.
(9) asynchronous message processing terminate, or are instructed by way of sending a synchronization to terminate.Proper communication
In always repeat step (3) arrive (9).
The beneficial effects of the invention are as follows：
The control of 1553B bus asynchronous message processing procedures is realized by hardware, the organizing transmission of aperiodic message leads to
BC condition message is crossed to realize, the execution of condition message only needs the very short time, therefore it is small to be delayed, and aperiodic message can be achieved
Real-time transmission, while also can ensure that sequential of the aperiodic message in bus, there is certainty, be easy to the design of system.Shape
The service request bit of state word and vector font realize that, without the interaction of software and hardware, real-time is good by RT hardware Protection Counter Functions,
The timely clearing of service request bit and vector font can be ensured, avoid the reprocessing of the same service requests of RT.Within hardware simultaneously
The processing of whole process is realized, the architecture design of system can be simplified.
Below by drawings and examples, technical scheme is described in further detail.
Brief description of the drawings
Fig. 1 is the 1553B bus topology figures that the present invention uses.
Fig. 2 is the flow chart that asynchronous message is handled under asynchronous service request method provided by the invention.
Fig. 3 is the structure chart of BC message chained lists under asynchronous service request method provided by the invention.
Fig. 4 is the flow chart that asynchronous message is handled under timing inquiry mode provided by the invention.
Fig. 5 is the structure chart of BC message chained lists under timing inquiry mode provided by the invention.
Embodiment
As shown in figure 1, the 1553B bus topology figures used for the present invention described in background technology.Wherein, dotted line indicates
Be optional remaining cable.
As shown in Fig. 2 the flow chart handled for asynchronous message under asynchronous service request method provided by the invention.
Before communication starts, BC and RT control information and message content are configured in advance.During proper communication, BC is pressed
The transmission of message is carried out according to message chained list.When RT does not have service request, the condition of condition message is unsatisfactory for, and BC is toward only sending out in bus
Send periodic messages；When RT has service request, according to RT data content construction RT vector font, then please by the service of RT status words
Ask position 1；Now the condition of condition message meets, BC can perform the aperiodic message for sending vector font and asynchronous communication；RT connects
The mode for sending vector font is received when instructing, automatically can be reset the service request bit of status word；Then RT can be according to vector font
It is related set to carry out the clear operation of vector font, or instructed by way of BC sends a synchronization to synchronize,
Complete an asynchronous message processing.
The process that asynchronous message is handled under asynchronous service request method is as follows：
(1) BC message is set before communicating, structure chart such as Fig. 3 institutes of BC message chained lists under asynchronous service request method
Show, period of sub-frame 50ms.
(2) RT configuration before communicating, enabled services request position and vector font hardware clear mode, the clearing side of vector font
Formula is completed to reset using the subaddressing request processing of acquiescence, sets the mask value of vector font corresponding to RT subaddressings and to be reset
The pointer of vector font.
Wherein the construction of vector font mask value is identical with vector word format specified in GJB289 agreements or User Defined.
Here the form for defining vector font is the request that different subaddressings are represented with different data bit, and subaddressing 1 is corresponded to bit0,
Bit1 corresponds to subaddressing 2, by that analogy.The pointer of vector font is the address of vector font in RT subaddressings 0 or 31.
(3) proper communication, BC send periodic messages according to the message chained list of setting, and when RT does not have service request, condition disappears
The condition of breath is unsatisfactory for, and BC is toward only sending periodic messages [0] in bus.
(4) in communicating, when RT subaddressing 2 has data to send, data renewal is sent subaddressing 2 by host computer to RT
Data storage area, the construction vector font of subaddressing 0 or 31 is 0X0002, afterwards by the service request position 1 of RT status words.
(5) now the condition of condition message [1] meets, the mode that BC sends once transmission vector font instructs.
(6) after RT receives which instruction, the service request bit of status word is reset, and together with vector font 0X0,002 mono-
Rise and be sent in bus, while preserve the vector font 0X0002 of transmission, for representing that vector font is transmitted across, and subaddressing 2 has
Request.
(7) BC performs condition message [2], judges whether the subaddressing 1 of vector font is set, and now condition is unsatisfactory for, and continues
Perform next condition message.
(8) BC continues executing with condition message [3], judges whether subaddressing 2 is set in vector font, and now condition meets, BC
Once aperiodic message is sent, for receiving the data of RT subaddressings 2.
(9) RT receives the data word of instruction, responsive state word and corresponding number.After data have been sent, judge what is preserved
Vector font is not zero, according to setting vector font pointer and set mask value, by the vector font neutron of subaddressing 0 or 31
Bit2 corresponding to location 2 is reset.
(10) after BC has sent aperiodic message, a follow-up condition message to the last condition message is continued executing with.
(11) asynchronous message processing terminate, or are instructed by way of BC sends a synchronization to synchronize.
Repeat step (3) arrives (11) always in communication.
As shown in figure 4, the flow chart handled for asynchronous message under timing inquiry mode provided by the invention.
Before communication starts, BC and RT control information and message content are configured in advance.During proper communication, BC is pressed
The transmission of message is carried out according to message chained list.When RT does not have service request, the condition of condition message is unsatisfactory for, and BC is toward only sending out in bus
Periodic messages and the mode of transmission vector font is sent to instruct；When RT has service request, the vector according to RT data content construction RT
Word.BC is instructed by way of sending vector font, inquires RT vector font, and the condition of subsequent condition message meets, BC can be by
According to the setting of chained list, aperiodic message corresponding to tissue transmission.After the completion of aperiodic Message Processing, RT according to vector font correlation
Set to carry out the clear operation of vector font, complete an asynchronous message processing.
The process that asynchronous message is handled under timing inquiry mode is as follows：
(1) BC message is set before communicating, and the structure chart of BC message chained lists is as shown in figure 5, son under timing inquiry mode
Frame period is 50ms.
(2) RT configuration before communicating, vector font hardware clear mode is enabled, the clearing mode of vector font is using acquiescence
Subaddressing request processing is completed to reset, and sets the finger of the mask value of vector font and the vector font to be reset corresponding to RT subaddressings
Pin.
Wherein the construction of vector font mask value is identical with vector word format specified in GJB289 agreements or User Defined.
Here the form for defining vector font is the request that different subaddressings are represented with different data bit, and subaddressing 1 is corresponded to bit0,
Bit1 corresponds to subaddressing 2, by that analogy.The pointer of vector font is the address of vector font in RT subaddressings 0 or 31.
(3) proper communication, BC send periodic messages according to the message chained list of setting, and when RT does not have service request, condition disappears
The condition of breath is unsatisfactory for, and BC is instructed [1] toward a transmission periodic messages [0] in bus and the mode of transmission vector font.
(4) in communicating, when RT subaddressing 2 has data to send, data renewal is sent subaddressing 2 by host computer to RT
Data storage area, the vector font of construction subaddressing 0 or 31 is 0X0002.
(5) when the mode for going to transmission vector font in BC cycles instructs [1], RT vector font is inquired.
(6) BC performs condition message [2], judges whether the subaddressing 1 of vector font is set, and now condition is unsatisfactory for, and continues
Perform next condition message.
(7) BC continues executing with condition message [3], judges whether subaddressing 2 is set in vector font, and now condition meets, BC
Once aperiodic message is sent, for receiving the data of RT subaddressings 2.
(8) RT receives the data word of instruction, responsive state word and corresponding number.After data have been sent, judge what is preserved
Vector font is not zero, according to setting vector font pointer and set mask value, by the vector font neutron of subaddressing 0 or 31
Bit2 corresponding to location 2 is reset.
(9) after BC has sent aperiodic message, a follow-up condition message to the last condition message is continued executing with.
(10) asynchronous message processing terminate, and repeat step (3) arrives (10) always in communication.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited,
Although the present invention is described in detail with reference to preferred embodiments, it will be understood by those within the art that：Its according to
Technical scheme can so be modified or equivalent substitution, and these modifications or equivalent substitution can not also make to repair
Technical scheme after changing departs from the spirit and scope of technical solution of the present invention.
Claims (6)
- A kind of 1. real-time control method of 1553B buses asynchronous message, it is characterised in that：The real-time control method of the 1553B buses asynchronous message, the existing biography to 1553B bus asynchronous messages is examined with Hardware I P Defeated control, including the transmission of aperiodic message and the clearing of RT service request bits and vector font, ensure that RT service requests Real-time response and RT mode bits and vector font are reset in time；The BC of IP kernel is designed with condition message, for realizing the automatic transmission of aperiodic message；RT has the service request bit of status word and the hardware clear mode of vector font, and the clearing of wherein vector font has three kinds of sides Formula：Detect that different instructions resets, detects that synchronous mode instructs clearing, subaddressing request processing to complete to reset；The real-time control method of the 1553B buses asynchronous message, including asynchronous service request method and timing inquiry mode；Under asynchronous service request method, BC and RT control information and message content are configured in advance；BC use conditions Message will send vector font and aperiodic message, form a message chained list with periodic messages, and disappear according to chain of messages table organization The transmission of breath；Enabled services request position and vector font hardware clear mode are wanted to RT, the clearing mode of vector font, each RT are set The mask value of subaddressing vector font and the vector font pointer to be removed；During proper communication, BC carries out message according to message chained list Transmission, when going to condition message every time, a condition judgment can be carried out, carried out according to the result of judgement and advance setting The transmission control of message；Under timing inquiry mode, BC is instructed to inquire about RT vector font, no by way of sending vector font in periodic messages Need to handle the service request bit of status word.
- A kind of 2. real-time control method of 1553B buses asynchronous message according to claim 1, it is characterised in that：BC condition message includes, and pointer, the condition of message are performed when the pointer of execution message, condition meet when condition is unsatisfactory for The pointer of object, the mask value of condition, the fiducial value of condition, condition meet number.
- A kind of 3. real-time control method of 1553B buses asynchronous message according to claim 2, it is characterised in that：The specific determination methods whether BC condition message meets are, according to the conditional object pointer set in condition message, to obtain Obtain conditional object；Conditional object and condition mask phase with result made comparisons with the condition fiducial value set, the condition if equal Meet, otherwise condition is unsatisfactory for.
- A kind of 4. real-time control method of 1553B buses asynchronous message according to claim 1, it is characterised in that：BC realizes the automatic transmission of aperiodic message with condition message, i.e. when BC performs condition message, not toward sending in bus Data, only carry out the judgement of condition；If condition and number meet simultaneously, according to the message pointer set in condition message, hold Aperiodic message when condition of row meets, realizes the automatic transmission of aperiodic message, otherwise continues executing with ensuing week Phase message.
- A kind of 5. real-time control method of 1553B buses asynchronous message according to claim 1, it is characterised in that：RT removes the service request bit of status word automatically, i.e. RT preserves the information of status word, when being arranged to hardware clearing, RT Receive send vector font mode instruct after, the service request bit of status word is reset, and is sent collectively to together with vector font In bus, while update the status word of preservation.
- A kind of 6. real-time control method of 1553B buses asynchronous message according to claim 1, it is characterised in that：RT removes vector font automatically, i.e., can be set in RT data structure the mask value of vector font corresponding to RT each subaddressings and The pointer for the vector font to be reset, the construction of mask value with vector word format is identical specified in GJB289 agreements or user makes by oneself Justice, the clearing for vector font；Meanwhile RT preserves the vector font of last transmission, is transmitted across for identifying vector font；RT roots The clearing to vector font is determined jointly according to the vector font of preservation and the mask value of vector font, if necessary to reset then according to setting Vector font clearing mode, vector font is reset by the sensing of pointer.
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| CN105245423B (en) * | 2015-08-28 | 2018-06-26 | 中国航天科工集团第三研究院第八三五七研究所 | 1553B bus message transmission optimization methods based on maximum allocated distance algorithm |
| CN105530155B (en) * | 2015-12-11 | 2019-04-05 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of 1553B bus universe message trigger control method |
| CN105974837B (en) * | 2015-12-31 | 2018-08-28 | 西安航天精密机电研究所 | Data based on the anti-read/write conflict of 1553B buses generate and transmission method |
| CN106411675B (en) * | 2016-09-19 | 2019-04-09 | 北京控制工程研究所 | A kind of centralized bus timing control method based on timeslice planning |
| CN106656713B (en) * | 2017-01-10 | 2019-07-19 | 北京电子工程总体研究所 | A kind of bus communication control system based on request return formula communication |
| CN107769908B (en) * | 2017-09-18 | 2019-12-13 | 北京空间飞行器总体设计部 | Time division multiplexing 1553B bus access method |
| CN110750473B (en) * | 2019-10-18 | 2023-06-02 | 天津津航计算技术研究所 | Message configuration processing method based on management table in 1553B bus BC mode |
| CN112231259B (en) * | 2020-10-15 | 2023-03-14 | 天津津航计算技术研究所 | 1553B bus control method |
| CN113783773B (en) * | 2021-11-12 | 2022-03-11 | 北京国科天迅科技有限公司 | Message scheduling method and system |
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