CN112799725B - Design method of instruction control data block function suitable for satellite model - Google Patents
Design method of instruction control data block function suitable for satellite model Download PDFInfo
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- CN112799725B CN112799725B CN202011192205.6A CN202011192205A CN112799725B CN 112799725 B CN112799725 B CN 112799725B CN 202011192205 A CN202011192205 A CN 202011192205A CN 112799725 B CN112799725 B CN 112799725B
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000013461 design Methods 0.000 title claims abstract description 18
- 230000004044 response Effects 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 15
- 230000001960 triggered effect Effects 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 3
- 230000006870 function Effects 0.000 abstract description 10
- 230000002159 abnormal effect Effects 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000005856 abnormality Effects 0.000 description 7
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/38—Concurrent instruction execution, e.g. pipeline or look ahead
- G06F9/3861—Recovery, e.g. branch miss-prediction, exception handling
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
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Abstract
The invention discloses a design method of instruction control data block functions suitable for satellite models, which comprises the following steps: receiving and storing an instruction control data block of ground betting through a star service center computer; each instruction control data block corresponds to an independent starting instruction, and when the star service center computer receives the starting instruction, the instruction control data can be immediately sent to target equipment; meanwhile, the starting instruction can be written into a satellite program control instruction, and when the execution time of the instruction is up, the instruction control data is sent to the target equipment; the instruction control data can also be sent by the target device sending a request to the star service center computer. After the instruction control data is sent to the target equipment, the data stored in the memory of the computer of the star service center can not be deleted and can be called for multiple times. The instruction control data block function has a flexible sending strategy, and can effectively solve the problem that software of the on-board equipment outside the measurement and control arc section is not timely treated in an abnormal manner.
Description
Technical Field
The invention belongs to the technical field of aerospace, and particularly relates to a design method of a function of an instruction control data block applicable to satellite models.
Background
Currently, most electronic devices in an in-orbit satellite can handle and repair software that itself generates anomalies by receiving surface data. However, most of the time, the satellite is outside the effective measurement and control arc section, and if equipment software is abnormal, the ground cannot upload abnormal data blocks through the satellite-ground link channel, so that the equipment abnormality cannot be solved in time.
Disclosure of Invention
The technical solution of the invention is as follows: the method has the advantages that the defects of the prior art are overcome, the design method for the function of the instruction control data block applicable to the satellite model is provided, the data transmission mode is more flexible, when the software of the on-board equipment is abnormal, even if the satellite is positioned outside the measurement and control arc section, the abnormal equipment can timely receive the required treatment data block, and the abnormality is repaired in time.
In order to solve the technical problems, the invention discloses a design method of an instruction control data block function suitable for satellite models, which comprises the following steps:
receiving and storing an instruction control data block of ground betting through a star service center computer;
when the transmission condition is triggered, the instruction control data in the instruction control data block is transmitted to the target device.
The above design method of the command control data block suitable for satellite model further comprises: the following flag bit parameters are set in the on-board telemetry data: an instruction control data block number check flag, an instruction control data block virtual channel check flag, an instruction control data block length check flag, an instruction control data block transmission count, an instruction control data block response count, and an instruction control data block successful transfer flag.
In the above-mentioned design method for command control data block applicable to satellite model, the method for receiving and storing ground-based command control data block by means of satellite center computer includes:
receiving an instruction control data block of ground surface injection through a star service center computer;
checking the data block number, the virtual channel identification word and the effective data length of the instruction control data block;
if the number of the data block in the instruction control data block does not exceed the expected specified range, setting the check mark of the number of the instruction control data block as legal;
if the virtual channel identification word in the instruction control data block accords with the virtual channel identification word of any one target device, setting the virtual channel check mark of the instruction control data block as legal;
if the effective length in the instruction control data block does not exceed the specified range, setting the instruction control data block length check mark as legal;
and when the instruction control data block number checking mark, the instruction control data block virtual channel checking mark and the instruction control data block length checking mark are legal, storing the instruction control data block into an EEPROM or Flash of the star service center computer.
The above design method of the command control data block suitable for satellite model further comprises:
if the number of the data block in the instruction control data block exceeds the expected specified range, setting the check mark of the number of the instruction control data block as illegal, and ending the flow;
if the virtual channel identification word in the instruction control data block is not consistent with the virtual channel identification word of any one target device, setting the virtual channel check mark of the instruction control data block as illegal, and ending the flow;
if the effective length of the instruction control data block exceeds the specified range, the instruction control data block length check flag is set as illegal, and the flow is ended.
In the above-described method for designing an instruction control data block suitable for a satellite model, the transmission condition includes any one of the following conditions:
condition 1: triggering a sending condition when the star service center computer receives a starting instruction of ground injection;
condition 2: the starting instruction is written in the satellite program control instruction, the starting instruction execution time is up, the star service center computer compares the self star time with the starting instruction execution time, and when the self star time is equal to the starting instruction execution time, the sending condition is triggered;
condition 3: when the star service center computer receives the request message sent by the target equipment, the sending condition is triggered.
In the above design method of the command control data block applicable to satellite model, the method for transmitting the valid data in the command control data block to the target device includes:
extracting effective data from the instruction control data block according to the effective data length marked in the format of the instruction control data block, and reading a virtual channel identification word of the target device;
and according to the read virtual channel identification word of the target device, the extracted effective data is sent to the target device through a bus.
The above design method of the command control data block suitable for satellite model further comprises:
judging whether the target equipment successfully receives the valid data;
if the target equipment successfully receives the correct effective data, a successful receiving response is made on the bus to inform a star service center computer that the target equipment has correctly received the effective data, and meanwhile, the star service center computer sets a successful transmission mark of the instruction control data block as successful;
if the target equipment does not receive the valid data, no response is made on the bus; if the star service center computer still does not receive any response of the target equipment after waiting for a certain period of time, retransmitting the effective data extracted once to the target equipment through a bus;
if the target equipment receives the wrong effective data, an invalid response is made on the bus, and after receiving the invalid response, the star service center computer retransmits the effective data extracted once to the target equipment through the bus.
The above design method of the command control data block suitable for satellite model further comprises: after the star service center computer retransmits the effective data extracted once to the target equipment through the bus, if the successful receiving response of the target equipment cannot be received, the successful transmitting mark of the instruction control data block is set as unsuccessful, the ground is notified, and the process is ended.
In the above design method for the instruction control data block applicable to the satellite model, one instruction control data block corresponds to one start instruction, and different instruction control data blocks correspond to different start instructions.
In the above design method for the instruction control data block applicable to satellite model, after the extracted effective data is sent to the target device through the bus according to the read virtual channel identification word of the target device, the instruction control data block stored in the EEPROM or Flash of the satellite center computer is not deleted, and can be called when the target device is needed again.
The invention has the following advantages:
(1) The invention discloses a design method of a command control data block function suitable for satellite model, which stores command control data blocks required for processing the abnormality of on-board equipment software in a memory of a satellite service center computer in advance, when the equipment software is abnormal, even if the satellite is outside an effective measurement and control arc section, abnormal equipment can still receive processing data in time, so that the abnormality of the software can be recovered in time, and the problem that the fault cannot be solved in time because the satellite is outside the measurement and control arc section when the abnormality of the on-board equipment software is generated and the abnormality of the satellite cannot be received in time.
(2) The invention discloses a design method of a function of an instruction control data block suitable for a satellite model, which is characterized in that the transmitted instruction control data block cannot be deleted from a memory and can be called for multiple times, thereby avoiding the trouble of repeatedly uploading the instruction control data block on the ground.
Drawings
Fig. 1 is a flowchart of a method for designing a function of an instruction control data block applicable to a satellite model according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention disclosed herein will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in this embodiment, the method for designing an instruction control data block applicable to a satellite model includes:
and step 101, receiving and storing the ground-based command control data block through the star service center computer.
In this embodiment, as shown in table 1, the following flag parameters may be set in the on-board telemetry data: an instruction control data block number check flag, an instruction control data block virtual channel check flag, an instruction control data block length check flag, an instruction control data block transmission count, an instruction control data block response count, and an instruction control data block successful transfer flag.
TABLE 1 flag bit parameter configuration Table
Therefore, by the information in table 1, the ground personnel can intuitively know whether the execution flow of the design method of the instruction control data block suitable for the satellite model is smooth, if a certain telemetry is abnormal, the ground personnel can quickly judge which link in the flow the abnormality occurs in order to make a treatment decision on the ground by the information in table 1.
Preferably, the specific execution flow of the step 101 may be as follows:
11 Receiving an instruction control data block injected on the ground through a star service center computer; and checking the data block number, the virtual channel identification word and the effective data length of the instruction control data block.
12 If the number of the data block in the instruction control data block does not exceed the expected specified range, setting the check mark of the number of the instruction control data block as legal; if the virtual channel identification word in the instruction control data block accords with the virtual channel identification word of any one target device, setting the virtual channel check mark of the instruction control data block as legal; if the effective length of the instruction control data block does not exceed the specified range, the instruction control data block length check flag is set to be legal.
13 When the instruction control data block number checking mark, the instruction control data block virtual channel checking mark and the instruction control data block length checking mark are legal, the instruction control data block is stored into an EEPROM or Flash of the star service center computer.
In this embodiment, the instruction control data block is saved only if all three checks are acceptable, and no save is performed if any one is out of compliance. Namely: if the number of the data block in the instruction control data block exceeds the expected specified range, the instruction control data block number checking mark is set as illegal, and the flow is ended. If the virtual channel identification word in the instruction control data block is not consistent with the virtual channel identification word of any one target device, the virtual channel check mark of the instruction control data block is set as illegal, and the process is ended. If the effective length of the instruction control data block exceeds the specified range, the instruction control data block length check flag is set as illegal, and the flow is ended.
Step 102, when the transmission condition is triggered, the instruction control data in the instruction control data block is transmitted to the target device.
In the present embodiment, the transmission conditions include any one of the following conditions:
condition 1: when the star service center computer receives a start instruction of ground injection, a sending condition is triggered.
Condition 2: the starting instruction is written in the satellite program control instruction, the starting instruction execution time is up, the star service center computer compares the self star time with the starting instruction execution time, and when the self star time is equal to the starting instruction execution time, the sending condition is triggered.
Condition 3: when the star service center computer receives the request message sent by the target equipment, the sending condition is triggered.
That is, in the present embodiment, the transmission of the instruction control data in the instruction control data block can be realized in at least three ways.
Further, the sending of the valid data in the instruction control data block to the target device may specifically be achieved by: extracting effective data from the instruction control data block according to the effective data length marked in the format of the instruction control data block, and reading a virtual channel identification word of the target device; and according to the read virtual channel identification word of the target device, the extracted effective data is sent to the target device through a bus.
In this embodiment, the method for designing the instruction control data block applicable to the satellite model may further include:
21 Judging whether the target device successfully receives the valid data.
22 If the target device successfully receives the correct valid data, a successful receiving response is made on the bus to inform the star service center computer that the target device has correctly received the valid data, and meanwhile, the star service center computer sets a successful transmission flag of the instruction control data block as successful.
23 If the target device does not receive the valid data, not responding on the bus; if the star service center computer still does not receive any response of the target device after waiting for a certain period of time, the effective data extracted once is retransmitted to the target device through the bus.
24 If the target device receives the wrong effective data, an invalid response is made on the bus, and the star service center computer retransmits the effective data extracted once to the target device through the bus after receiving the invalid response.
Further, after retransmitting the effective data extracted once to the target device through the bus, if the successful receiving response of the target device cannot be received, the star service center computer sets the successful transmitting flag of the instruction control data block to be unsuccessful, notifies the ground, and ends the flow.
It should be noted that, in this embodiment, one instruction control data block corresponds to one start instruction, and different instruction control data blocks correspond to different start instructions. In addition, after the extracted effective data is sent to the target device through the bus according to the read virtual channel identification word of the target device, the instruction control data block stored in the EEPROM or Flash of the star service center computer is not deleted, and can be called when the target device is needed again.
On the basis of the above-described embodiment, the following description will be made in connection with a specific example.
Table 2, instruction control data block superstration format schematic table
The instruction control data block is formatted as shown in table 2: w0 bytes in the format are instruction control data block identifiers, and are used for identifying the data blocks as instruction control data blocks by a star service center computer; w1 bytes are block numbers of instruction control data blocks, and the range of the block numbers is 0-15, namely the star service center computer has the capacity of storing 16 instruction control data blocks; filling out virtual channel identification words of target devices by W2-W4 bytes, sending a certain instruction control data block to three target devices at most, and filling out AAH in idle bytes if the target devices are less than three; w5 bytes are the effective data length of the instruction control data block; W6-W248 bytes are effective data length, the effective length is 243 bytes at most, and the effective length is less than 243 bytes, and the AAH is filled.
After receiving the uploaded instruction control data block, the star service center computer firstly reads the W1 byte in the format, judges whether the value is in a specified range, if the value is in the range of 0-15, the instruction control data block check mark telemetry is set as legal, otherwise, the instruction control data block check mark telemetry is set as illegal; then reading the virtual channel identification words of the target devices with the W2-W4 bytes in the format, if the values of the virtual channel identification words are not consistent with the virtual channel identification words of any one target device, the remote measurement of the virtual channel inspection mark of the instruction control data block is set as illegal, otherwise, the remote measurement is set as legal; and finally judging the effective length of the W5 byte in the format, if the effective length exceeds 243 bytes, remotely measuring an instruction control data block length check mark to be illegal, otherwise, setting the instruction control data block length check mark to be legal.
And the star service center computer stores the instruction control data block subjected to the validity judgment in an EEPROM or Flash of the star service center computer. The star service center computer may store up to 16 instruction control data blocks, each having an independent start instruction.
The star service center computer sends the instruction control data block in the following 3 modes:
1) Mode one: after receiving the start instruction of the ground betting, the star service center computer performs the following steps: the star service center computer finds the instruction control data block corresponding to the starting instruction, reads the virtual channel identification word and the effective length of the target device in the data block format, extracts the effective data according to the effective length, and sends the effective data to the target device through the bus.
2) Mode two: the instruction control data block start instruction can also be used in combination with program control instruction functions, and the writing format is shown in table 3.
TABLE 3 formal sketch list of startup instruction writing program-controlled instruction
When the on-board time is equal to the execution time of a certain start instruction, the start instruction is automatically executed. The executing process is consistent with the executing process after the star service center computer receives the start instruction of the ground surface betting in the first mode.
3) Mode three: when the software of the target equipment is abnormal, a request can be sent to the star service center computer through the bus. After receiving the request, the star service center computer finds the effective data of the instruction control data block required by the target device from the memory and sends the effective data to the target device through the bus.
After receiving the instruction control data block, the target equipment judges the validity of the data block according to bus protocol convention, if the data block is valid, the target equipment makes a successful receiving response to the star service center computer through the bus; if the data block is invalid, making a data block invalid response to the star service center computer through the bus; if the target device does not receive the data block, no reply is made.
If the star service center computer receives the successful receiving response, the command control data block successful transmission mark telemetering is set as successful; if the star service center computer receives the invalid response of the data block, retransmitting the instruction control data block for 1 time; if the star service center computer does not receive any response of the target device after waiting for a certain period of time, retransmitting the command control data block for 1 time. After the star service center computer retransmits the instruction control data block for 1 time, if the target equipment can not make a successful receiving response, the star service center computer gives up sending, and the instruction control data block successful transmission mark telemetering is set as unsuccessful, and the ground is notified.
Although the present invention has been described in terms of the preferred embodiments, it is not intended to be limited to the embodiments, and any person skilled in the art can make any possible variations and modifications to the technical solution of the present invention by using the methods and technical matters disclosed above without departing from the spirit and scope of the present invention, so any simple modifications, equivalent variations and modifications to the embodiments described above according to the technical matters of the present invention are within the scope of the technical matters of the present invention.
What is not described in detail in the present specification belongs to the known technology of those skilled in the art.
Claims (3)
1. The design method of the instruction control data block function suitable for the satellite model is characterized by comprising the following steps:
the following flag bit parameters are set in the on-board telemetry data: an instruction control data block number check flag, an instruction control data block virtual channel check flag, an instruction control data block length check flag, an instruction control data block transmission count, an instruction control data block response count, and an instruction control data block successful transfer flag;
receiving and storing an instruction control data block of ground betting through a star service center computer;
when the sending condition is triggered, sending the instruction control data in the instruction control data block to the target equipment; wherein the transmission condition includes any one of the following conditions: condition 1: triggering a sending condition when the star service center computer receives a starting instruction of ground injection; condition 2: the starting instruction is written in the satellite program control instruction, the starting instruction execution time is up, the star service center computer compares the self star time with the starting instruction execution time, and when the self star time is equal to the starting instruction execution time, the sending condition is triggered; condition 3: triggering a sending condition when the star service center computer receives a request message sent by target equipment;
wherein:
receiving and storing an instruction control data block of ground betting through a star service center computer, wherein the instruction control data block comprises:
receiving an instruction control data block of ground surface injection through a star service center computer;
checking the data block number, the virtual channel identification word and the effective data length of the instruction control data block;
if the number of the data block in the instruction control data block does not exceed the expected specified range, setting the check mark of the number of the instruction control data block as legal;
if the virtual channel identification word in the instruction control data block accords with the virtual channel identification word of any one target device, setting the virtual channel check mark of the instruction control data block as legal;
if the effective length in the instruction control data block does not exceed the specified range, setting the instruction control data block length check mark as legal;
when the instruction control data block number checking mark, the instruction control data block virtual channel checking mark and the instruction control data block length checking mark are legal, storing the instruction control data block into an EEPROM or Flash of the star service center computer;
if the number of the data block in the instruction control data block exceeds the expected specified range, setting the check mark of the number of the instruction control data block as illegal, and ending the flow;
if the virtual channel identification word in the instruction control data block is not consistent with the virtual channel identification word of any one target device, setting the virtual channel check mark of the instruction control data block as illegal, and ending the flow;
if the effective length in the instruction control data block exceeds the specified range, setting the instruction control data block length check mark as illegal, and ending the flow;
transmitting the instruction control data in the instruction control data block to the target device, comprising:
extracting effective data from the instruction control data block according to the effective data length marked in the format of the instruction control data block, and reading a virtual channel identification word of the target device;
according to the read virtual channel identification word of the target device, the extracted effective data is sent to the target device through a bus;
judging whether the target equipment successfully receives the valid data;
if the target equipment successfully receives the correct effective data, a successful receiving response is made on the bus to inform a star service center computer that the target equipment has correctly received the effective data, and meanwhile, the star service center computer sets a successful transmission mark of the instruction control data block as successful;
if the target equipment does not receive the valid data, no response is made on the bus; if the star service center computer still does not receive any response of the target equipment after waiting for a certain period of time, retransmitting the effective data extracted once to the target equipment through a bus;
if the target equipment receives the wrong effective data, an invalid response is made on the bus, and after receiving the invalid response, the star service center computer retransmits the effective data extracted once to the target equipment through the bus;
after the star service center computer retransmits the effective data extracted once to the target equipment through the bus, if the successful receiving response of the target equipment cannot be received, the successful transmitting mark of the instruction control data block is set as unsuccessful, the ground is notified, and the process is ended.
2. The method for designing a function of an instruction control data block for a satellite model according to claim 1, wherein one instruction control data block corresponds to one start instruction, and different instruction control data blocks correspond to different start instructions.
3. The method for designing function of command control data block for satellite model according to claim 1, wherein the command control data block stored in EEPROM or Flash of the satellite center computer is not deleted after the extracted effective data is transmitted to the target device through the bus according to the read virtual channel identification word of the target device, and can be called when the target device is needed again.
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