CN108986436A - A kind of communication system for the transmission of Satellite Vibration data - Google Patents
A kind of communication system for the transmission of Satellite Vibration data Download PDFInfo
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- CN108986436A CN108986436A CN201810630554.8A CN201810630554A CN108986436A CN 108986436 A CN108986436 A CN 108986436A CN 201810630554 A CN201810630554 A CN 201810630554A CN 108986436 A CN108986436 A CN 108986436A
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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Abstract
The present invention provides a kind of communication systems for satellite data transmission, including monitoring unit and acquisition unit；Hardware interface includes :+12V power supply interface between monitoring unit and acquisition unit, two-way RS422 communication interface.+ 12V control supplies power to acquisition unit all the way for monitoring unit output, and output current capacity is not less than 1.2A；The communication of monitoring unit and acquisition unit is using the synchronous RS422 interface of three-wire system, including gate, clock, data-signal, RS422 interface use one-to-one type of attachment, between monitoring unit and acquisition unit by RS422 interface according to timing agreement transmission communications data types include temporal information, location information, control command, check information, telemetry intelligence (TELINT), remote sensing source packet.The present invention establishes the transmission and control method of data, specifies the content and format of transmission data, it is ensured that data are transmitted accurate and reliable.
Description
Technical field
The present invention relates to inside satellite data communications methods, and in particular, to Satellite Vibration data monitoring unit with adopt
Collect the control and transmission between unit.
Background technique
The communication system that certain satellite moves data transmission is made of monitoring unit and acquisition unit, is used for powered phase, in-orbit section
The measurement of Satellite Vibration response data.Due on satellite platform, the mounting arrangement many places of payload load in satellite over the ground
A possibility that face, and each payload mounting distance is closer, when operation on orbit interfere with each other is larger, and vibration interference source such as satellite flies
Mounting surface of the rotors such as wheel, solar array apart from certain sensitive loads is closer, to keep transmission path shorter, causes to be transmitted to
The vibration level decaying of payload mounting base is limited, has an impact to the working performance of load.
The major function of Satellite Vibration monitoring subsystem:
1) it obtains the mechanical environment of satellite powered phase and is assessed；
2) obtain the vibration environment (containing before and after vibration isolation) when sensitive payload work under in-orbit state, realize vibration isolator every
The assessment for performance of shaking；
3) vibration characteristics in satellite major disturbances source under in-orbit state is obtained.
For vibration monitoring subsystem by the vibration data of instruction starting circle collection powered phase, test result can be in satellite sheet
Ground is kept in, after through number pass channels reach grounded receiving station down in batches.In-orbit section of reception surface instruction is acquired, and by distant
The operation such as data down transmission is realized in control instruction.Test data can be used for satellite powered phase and in-orbit section after Ground analysis is handled
Kinetic model amendment and the amendment of simulation analysis, satellite in-orbit vibration mechanical model and the in-orbit oscillation ring of simulation analysis, load
Border model be registrated and Precision Design optimize etc., provide foundation and support for design of satellites.
Therefore, it to complete to satellite in powered phase, in-orbit section of vibrating data analysis it may first have to realize that spaceborne monitoring is single
Member and the valid data of acquisition unit transmit.
Summary of the invention
The object of the present invention is to provide a kind of communication systems for the transmission of Satellite Vibration data, and it is single to realize spaceborne monitoring
Member carries out valid data transmission with acquisition unit, under different phase, that is, active stage mode, in-orbit stage mode, realizes different conditions
Data control and transmission i.e. under normal mode of operation, fail operation mode, realize the transmission for spaceborne vibration data.
In order to achieve the above object of the invention, the present invention is technical solution used by solving its technical problem:
A kind of communication system for the transmission of Satellite Vibration data, is made of, monitoring unit monitoring unit and acquisition unit
Hardware interface between acquisition unit includes+12V power supply interface and two-way RS422 communication interface；Monitoring unit export all the way+
12V control supplies power to acquisition unit, and output current capacity is not less than 1.2A；Monitoring unit is communicated with acquisition unit using three-wire system
Synchronous RS422 interface, including gate, clock, data-signal, RS422 interface use one-to-one type of attachment.
Further, the communication data transmitted by RS422 interface according to timing agreement between monitoring unit and acquisition unit
Type includes temporal information, location information, control command, check information, telemetry intelligence (TELINT), remote sensing source packet.
Further, there is the switching function of+12V power supply output inside monitoring unit；Acquisition unit power consumption is not more than 5W,
Interior design has fuse to carry out short-circuit protection.
The present invention also provides a kind of based on the control of the data of spaceborne monitoring unit and acquisition unit and transmission method, monitoring
Unit sends data to acquisition unit according to timing agreement, data content include temporal information, location information, control instruction and
Check information；Specifically includes the following steps:
Step 1: monitoring unit sends control command to acquisition unit, enters step 2；
Step 2: monitoring unit starts timing, step 3；
Step 3: monitoring unit carries out interpretation to timing, if in 1ms, including 1ms, gate effectively, enter step 4,
If gate-control signal is more than that the 1ms time is invalid, this, which sends order, terminates；
Step 4: acquisition unit sends data, and monitoring unit starts to receive data, and data format is set, enters step 5；
Step 5: monitoring unit verifies received data, and check information transmission acquisition unit is entered step 6；
Step 6: check information is compared in acquisition unit, if verification is correct, this sign off, if verification is not
Correctly, 7 are entered step；
Step 7: whether this receives more than 3 times for interpretation, if being no more than 3 times, reenters step 2, if more than 3 times, this
Secondary reception terminates.
For different data types, The present invention gives the communication modes of monitoring unit and acquisition unit, specify two
Communication interface, process, content and call format between person, realize the effective reliable transmission of data.
Detailed description of the invention
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon:
Fig. 1 is structural schematic block diagram of the invention.
Fig. 2 is the power supply interface schematic diagram of monitoring unit and acquisition unit.
Fig. 3 is the RS422 data communication interface schematic diagram of monitoring unit and acquisition unit.
Fig. 4 is that monitoring unit sends acquisition unit telemetering, remotely-sensed data communication flow diagram.
Fig. 5 is that monitoring unit sends acquisition unit data time sequence figure.
Fig. 6 is that monitoring unit sends acquisition unit control command timing diagram.
Fig. 7 is that acquisition unit sends monitoring unit data time sequence figure.
Fig. 8 is that acquisition unit sends monitoring unit data time sequence figure.
Specific embodiment
The present invention is described in detail combined with specific embodiments below.Following embodiment will be helpful to the technology of this field
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill of this field
For personnel, without departing from the inventive concept of the premise, various modifications and improvements can be made.These belong to the present invention
Protection scope.
Originally it is applying in example, as shown in Figure 1, Figure 2, Figure 3 shows, communication system provided by the invention is single by monitoring unit and acquisition
Member composition, hardware interface includes: 12V power supply interface between monitoring unit and acquisition unit, two-way RS422 communication interface.1) it monitors
+ 12V control supplies power to acquisition unit all the way for unit output, and output current capacity is not less than 1.2A, have inside monitoring unit+
The switching function of 12V power supply output.Acquisition unit power consumption is not more than 5W, and inside should design fuse and carry out short-circuit protection；2)
The communication of monitoring unit and acquisition unit is connect using the synchronous RS422 interface of three-wire system, including gate, clock, data-signal, RS422
Mouth uses one-to-one type of attachment, and interface circuit and reception pull-up circuit such as Fig. 2 show, passes through between monitoring unit and acquisition unit
The communications data types of RS422 interface are as shown in table 1.
1 monitoring unit of table and acquisition unit communications data types
Acquisition unit switching on and shutting down, acquisition start-stop are controlled by monitoring unit, are received the telemetering that monitoring unit is sent and are transmitted order
Telemetry is sent afterwards to monitoring unit；Acquisition unit is acquired data storage, receives the data transmission that monitoring unit is sent
Remote sensing source packet is sent after order.
Monitoring unit and acquisition unit communication mode use master-slave mode, and all data transmission are initiated by monitoring unit.
It includes temporal information, location information, control command etc. that monitoring unit, which is sent to acquisition unit its data content,.Temporal information,
Location information and control command data format specific definition are shown in Table 2
2 monitoring unit of table is sent to acquisition unit data content and format
Originally it is applying in example, is passing through RS422 interface delivery time, location information, number between monitoring unit and acquisition unit
About it is set to 100kHz according to rate, tranmitting data register signal when gating effective, temporal information, location information data length are 15 bytes
(120bit), temporal information, location information gate width are 1.2ms, and timing agreement is as shown in Figure 4.
Originally it is applying in example, monitoring unit sends telemetering transmission order to wireless acquisition node, receives acquisition unit telemetering
Telemetry check information is fed back to acquisition unit by data.As shown in Figure 5 altogether include 7 steps:
Step 1: monitoring unit, which is defined by RS422 sending port according to 2 format of table, sends control command to acquisition unit,
Control command sends data rate and is about set to 100kHz, tranmitting data register signal when gating effective, and data length is 9 bytes
(72bit), it is 720us that control command, which gates effective width, and timing is arranged as shown in fig. 6, entering step 2；
Step 2: monitoring unit starts timing, step 3；
Step 3: monitoring unit carries out interpretation to timing, if in 1ms, including 1ms, receiving port gate is effective, into
Enter step 4, if receiving port gate-control signal is more than that the 1ms time is invalid, this, which sends order, terminates；
Step 4: monitoring unit starts to receive data, and remote sensing receives data rate and is about set to 100kHz, sends out when gating effective
Clock signal is sent, remote sensing source bag data length is 20 bytes (160bit), and gate effective width is 1.6ms, timing agreement such as Fig. 7
Shown, data format enters step 5 as shown in 3 tables；
Acquisition node sends telemetry format in 3 cabin of table
Table 4 and verification mode
Wherein, C0/i=b0/i+b1/i+ ... ... bn/i, bn/i are the i-th bit of bn.
Step 5: monitoring unit is verified received data by table 4, and check information is sent acquisition unit, verification
Information format is as shown in table 2, enters step 6；
Step 6: check information is compared in acquisition unit, if verification is correct, this sign off, if verification is not
Correctly, 7 are entered step；
Step 7: whether this receives more than 3 times for interpretation, if being no more than 3 times, reenters step 2, if more than 3 times, this
Secondary reception terminates.
Originally it is applying in example, monitoring unit sends remote sensing data transmission order to wireless acquisition node, receives acquisition unit
Remotely-sensed data check information is fed back to acquisition unit by remotely-sensed data.As shown in Figure 5 altogether include 7 steps:
Step 1: monitoring unit, which is defined by RS422 sending port according to 2 format of table, sends control command to acquisition unit,
Control command sends data rate and is about set to 100kHz, tranmitting data register signal when gating effective, and data length is 9 bytes
(72bit), it is 720us that control command, which gates effective width, and timing is arranged as shown in fig. 6, entering step 2；
Step 2: monitoring unit starts timing, step 3；
Step 3: monitoring unit carries out interpretation to timing, if in 1ms, including 1ms, receiving port gate is effective, into
Enter step 4, if receiving port gate-control signal is more than that the 1ms time is invalid, this, which sends order, terminates；
Step 4: monitoring unit starts to receive data, and remote sensing receives data rate and is about set to 100kHz, sends out when gating effective
Clock signal is sent, remote sensing source bag data length is 1024 bytes (8192bit), and gate effective width is 81.92ms, timing agreement
As shown in figure 8, data format is as shown in table 5,5 are entered step；
5 vibration monitoring remote sensing source packet format of table
Source packet sequence counts: since 0, sequential counting；
Packet length: pointing out the length of the remote control packet, is the binary sequence count value C of 16bit, as unit of byte, the meter
Numerical value be equal to from first of secondary top guide to packet last byte number subtract 1.Packet is long count include secondary top guide and
Bag data domain two parts, wherein bag data domain part includes the cumulative and verification of remote control application data and two bytes.That is: C=
{ (byte number) -1 }
Timing code: vibration monitoring data collection data start time information, format are identical as timing code on star.
Location information: the corresponding location information of vibration monitoring data collection data.
Data identification: acquisition unit data, fixed value DC00Hex are indicated.
Secondary top guide: vibration monitoring subsystem acquisition mode is divided into active stage mode, in-orbit stage mode, for convenient for data down transmission
With parsing, secondary top guide is wrapped in vibration monitoring remote sensing source and defines 2 byte data identifiers.
The definition of 6 vibration monitoring remote sensing source bag data identifier of table
Packet Error Control domain: using cumulative and verification method, as shown in the table.
Table 7 and verification mode
Wherein, C0/i=b0/i+b1/i+ ... ... bn/i, bn/i are the i-th bit of bn.
Step 5: monitoring unit is verified received data by table 7, and check information is sent acquisition unit, verification
Information format is as shown in table 2, enters step 6；
Step 6: check information is compared in acquisition unit, if verification is correct, this sign off, if verification is not
Correctly, 7 are entered step；
Step 7: whether this receives more than 3 times for interpretation, if being no more than 3 times, reenters step 2, if more than 3 times, this
Secondary reception terminates.
Specific embodiments of the present invention are described above.It is to be appreciated that the invention is not limited to above-mentioned
Particular implementation, those skilled in the art can make various deformations or amendments within the scope of the claims, this not shadow
Ring substantive content of the invention.
Claims (5)
1. a kind of communication system for the transmission of Satellite Vibration data, which is characterized in that it is made of monitoring unit and acquisition unit,
Hardware interface between monitoring unit and acquisition unit includes+12V power supply interface and two-way RS422 communication interface；Monitoring unit is defeated
+ 12V control supplies power to acquisition unit all the way out, and output current capacity is not less than 1.2A；Monitoring unit is communicated with acquisition unit and is adopted
One-to-one type of attachment is used with the synchronous RS422 interface of three-wire system, including gate, clock, data-signal, RS422 interface.
2. the communication system of Satellite Vibration data transmission according to claim 1, which is characterized in that monitoring unit and acquisition
Include temporal information, location information, control life according to the communications data types of timing agreement transmission by RS422 interface between unit
It enables, check information, telemetry intelligence (TELINT), remote sensing source packet.
3. the communication system of Satellite Vibration data transmission according to claim 1, which is characterized in that tool inside monitoring unit
The switching function for thering is+12V power supply to export；Acquisition unit power consumption is not more than 5W, and interior design has fuse to carry out short-circuit protection.
4. the communication system of Satellite Vibration data according to claim 1 transmission, which is characterized in that the monitoring unit with
Acquisition unit carries out the control and transmission of data by following steps:
Step 1: monitoring unit sends control command to acquisition unit, enters step 2；
Step 2: monitoring unit starts timing, step 3；
Step 3: monitoring unit carries out interpretation to timing, if in 1ms, including 1ms, gate effectively, enter step 4, if
Gate-control signal is more than that the 1ms time is invalid, this, which sends order, terminates；
Step 4: acquisition unit sends data, and monitoring unit starts to receive data, and data format is set, enters step 5；
Step 5: monitoring unit verifies received data, and check information transmission acquisition unit is entered step 6；
Step 6: check information is compared in acquisition unit, if verification is correct, this sign off, if verified not just
Really, 7 are entered step；
Step 7: whether this receives more than 3 times for interpretation, if being no more than 3 times, step 2 is reentered, if this connects more than 3 times
Receipts terminate.
5. the communication system of Satellite Vibration data transmission according to claim 4, which is characterized in that the data are not only
It is only Satellite Vibration data, can be other data.
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| CN111122966A (en) * | 2019-12-27 | 2020-05-08 | 宁波三星医疗电气股份有限公司 | Load identification module data transmission method, device and system |
| CN117138265A (en) * | 2023-10-27 | 2023-12-01 | 深圳市宗匠科技有限公司 | Ultrasonic beauty instrument and self-checking method for ultrasonic beauty instrument |
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Application publication date: 20181211 |