CN109547147A - A kind of time-sharing multiplex multi-mode telemetering transmission design method - Google Patents
A kind of time-sharing multiplex multi-mode telemetering transmission design method Download PDFInfo
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- CN109547147A CN109547147A CN201811505430.3A CN201811505430A CN109547147A CN 109547147 A CN109547147 A CN 109547147A CN 201811505430 A CN201811505430 A CN 201811505430A CN 109547147 A CN109547147 A CN 109547147A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1694—Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/16—Time-division multiplex systems in which the time allocation to individual channels within a transmission cycle is variable, e.g. to accommodate varying complexity of signals, to vary number of channels transmitted
- H04J3/1682—Allocation of channels according to the instantaneous demands of the users, e.g. concentrated multiplexers, statistical multiplexers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
- H04Q2209/84—Measuring functions
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Abstract
The present invention provides a kind of time-sharing multiplex multi-mode telemetering transmission design method, solves the problems, such as that two information collecting devices, telemetering pass down Bandwidth-Constrained, telemetry source data down transmission complicated and changeable.Include: that possible power-up combination is grouped within the task phase to test load multi-mode system, simultaneously powered up equipment is classified as one group, a kind of corresponding telemetering group frame pattern；It determines that the period multi-frame number under each pattern is odd number, the telemetry to be transmitted under each pattern is screened, the high data of significance level are packaged into cyclic telemetering frame；Demand is passed under random data during system is worked is packaged into random telemetry frame one by one；Different modes is distinguished by different Data Identification codes in the fixation position of the cyclic telemetering frame and random telemetry frame；According to telemetry data transmission period sending cycle telemetry frame or random telemetry frame.
Description
Technical field
The present invention relates to a kind of time-sharing multiplex multi-mode telemetering transmit design method, be suitable for telemetering bandwidth resources anxiety and
Design is transmitted in the telemetering of telemetry source system complicated and changeable.
Background technique
Certain test load multi-mode system is in-orbit, and there are several different power-up combinations, the telemetry source to pass down
(time, voltage, electric current, temperature, equipment working state, communications status, crucial measurement data etc.) is with the powering state of equipment
And change.According to the information interface state of system, wherein there are two information collecting devices: at power supply and distribution management combination and information
Computer is managed, power supply and distribution management combination is the telemetering output interface of system, and when load system formal test, information processing calculates
Machine is the information centre of system.Power supply and distribution management combination and temperature controller are normal powered device, under in-orbit holding mode, only this two
Device power-on；Information processing computer is powered under test model, but system devises a variety of different test missions, according to test
The difference of task, other loading device timesharing power-up.This system information interface schematic diagram is as shown in Figure 1.There are people for in-orbit test
In circuit control mode, some node needs to pass down the execution state of some key operations.The constraint of upper level equipment total protocol
Telemetry data transmission takes 500ms period, effective word joint number no more than 27 bytes, but this system equipment up to 12 cover, telemetering
Data source is various, and telemetering bandwidth is extremely nervous.
After the telemetry data transmission of this system is to upper level equipment, under a kind of specific operation mode, upper level equipment pair
Telemetry is taken out and is passed under frame, and the indefinite pumping frame beginning and ending time, and pumping frame ratio is 1:4.In the information processing of other spacecrafts
The heart is also the transmission control equipment of telemetry frame, and is normal powered device, and the information Link State of this system, which transmits telemetering, to be increased
Difficulty is added.About telemetry format, PCM format cannot be well adapted for the changeable state of mode of this system, the source of packet telemetry
Packet mentality of designing realizes the statistical multiplex of telemetry frame, can relatively simply solve the telemetering group frame problem in complex data source, but
Need to arrange it is many it is attached illustrate data, be unfavorable for short frame telemetering transmission design.Unified telemetry format merges the two,
But its floating zone telemetering also at least needs user identifier and two category information of length to distinguish telemetry, this system expectation
It is reduced as far as identified category, improves the bandwidth occupancy rate of effective telemetry.
Based on above-mentioned application background, there is an urgent need to design one kind to can satisfy two information collecting devices, telemetering bandwidth money
Source anxiety and telemetry source telemetering transmission method complicated and changeable.
Summary of the invention
The present invention provides a kind of time-sharing multiplex multi-mode telemetering transmission design method, solves two information collecting devices, distant
Survey the data down transmission problem that biography Bandwidth-Constrained, telemetry source are complicated and changeable down.
A kind of time-sharing multiplex multi-mode telemetering transmission design method, comprising:
To test load multi-mode system, possible power-up combination is grouped within the task phase, by simultaneously powered up equipment
It is classified as one group, a kind of corresponding telemetering group frame pattern；
It determines that the period multi-frame number under each pattern is odd number, the telemetry to be transmitted under each pattern is sieved
Choosing, filters out the high data of significance level, and by the high data compression byte post package of the significance level at cyclic telemetering frame,
Frame number and telemetering byte number to be transmitted under the mode is set to match；Demand is passed under random data during system is worked one by one
It is packaged into random telemetry frame；
It is distinguished in the fixation position of the cyclic telemetering frame and random telemetry frame by different Data Identification codes different
Mode；
According to telemetry data transmission period sending cycle telemetry frame or random telemetry frame.
Further, it when passing demand under random telemetry frame occurs in system, is passed under pause period telemetry frame, passes through random frame
Lower biography current telemetry state, and continuously transmit 4 times；After current random frame passes down, cyclic telemetering frame is passed under continuing.
The invention has the benefit that
1, the present invention combines multi-mode system feature, sets to the optimization of the division of labor of two information collecting centers in system
Meter, time-sharing multiplex multi-mode telemetry format, the mode for taking odd-numbered frame cyclic telemetering and irregular random frame telemetering to combine, most
Telemetering identified category is saved to big degree, limited telemetering resource is utilized.
2, the multi-frame structure of the telemetry to be transmitted under each pattern is odd-numbered frame, because telemetering transmission cycle is fixed,
The transmission primaries temporal information in one group of multi-frame structure, the time of other frames according to telemetering frame number recursion, can satisfy system
Time precision requirement.
3, the present invention efficiently solves the number in telemetry source in the state that telemetering is resource-constrained, system model is various
It is inscribed according to arraign under layout, will be passed under the important telemetering amount of system core, meet the measurement monitoring demand of system.
Detailed description of the invention
Fig. 1 is that the specific embodiment of the invention transmits design diagram.
Specific embodiment
Carry out the time-sharing multiplex multi-mode telemetering that the present invention will be described in detail below for certain test load system and transmits design side
Method.
A kind of time-sharing multiplex multi-mode telemetering transmission design method, the first information to two information processing equipments in system
Flow direction is combed.Under standby mode, telemetry frame can only be handled by external telemetry interface equipment, under test model, if directly friendship
Power is transmitted by information processing computer framing, and power supply and distribution management combination needs the telemetry of itself and temperature controller returning to letter
Breath processing computer, causes unnecessary burden to information link.Therefore under test model, consider telemetering quantity and rate of change
Two factors are respectively distributed certain bandwidth in a frame for two information collecting devices, are not interfered mutually.
To test load multi-mode system, possible power-up combination is grouped within the task phase, by simultaneously powered up equipment
It is classified as one group, a kind of corresponding telemetering group frame pattern is distinguished not in the fixation position of telemetry frame by different Data Identification codes
Same mode.In every frame structure, telemetering identification code once it is determined that, in the frame telemetry of each byte location i.e. therewith really
It is fixed, therefore length mark is no longer needed, save a kind of mark.
Multi-frame structure under every kind of telemetry mode is designed to odd-numbered frame.It is multiple at one group because telemetering transmission cycle is fixed
Transmission primaries temporal information in frame structure, the time of other frames according to telemetering frame number recursion, can satisfy the time essence of system
Degree requires.
Design, transmission primaries temporal information in one group of multi-frame structure, other frames are optimized to telemetering time tranfer
Time according to telemetering frame number recursion, combination of transmitted temporal information is managed by power supply and distribution under standby mode, under operating mode, for matching
Fulgurite reason combination stops transmission, gives information processing computer disposal.
When the random demand of biography down occurs in system, passed under pause period telemetry frame, by passing current telemetry shape under random frame
State, and continuously transmit 4 times；After current random frame passes down, cyclic telemetering frame is passed under continuing.
Transmission design method of the invention is exemplified below.
As shown in Figure 1, being grouped first to the power-up combination of certain test load system, under in-orbit keeping warm mode, only supply
Distribution management combination and two device power-ons of temperature controller, design a kind of telemetry mode；When formal test, except power supply and distribution management is combined
Other than temperature controller power-up, in addition there is also three kinds of power-up assembled states for 10 equipment.Under in-orbit keeping warm mode, design it is a kind of to
Machine telemetry mode, bandwidth all combine occupancy by power supply and distribution management, and power supply and distribution management group is distant by itself telemetry and temperature controller
Measured data according to fixed format layout.When formal test, the power-up of information processing computer, power supply and distribution management combination is by monopolizing telemetering
Framing control is only to account for 1/4 or so of telemetering bandwidth, and remaining bandwidth is used by information processing computer.Since information processing calculates
10 equipment such as machine still have three kinds of different powered-up modes, in order to efficiently use telemetering bandwidth as far as possible, and will be at information
The telemetering of reason computer layout is divided into Three models.
Frame is taken out in order to cope with the not timing of upper level equipment, is made of under each telemetry mode odd-numbered frame cyclic telemetering data
Situations such as multi-frame structure, there are 3 frames, 5 frames, 47 frame.
For the stochastic regime information of test load system core link, for example, test prepare result, important repeat-back,
The information such as data storage management are designed and are passed under random telemetry frame.When there is the random demand of biography down, under pause period telemetry frame
It passes, continuously transmits 4 random frames.After random frame passes down, cyclic telemetering frame is passed under continuing.
Specific telemetering design is given by taking two of them mode as an example, wherein multi-frame mark quantity m, n, p are surprise
Number, and the multi-frame quantity for the multi-frame quantity and information processing computer that power supply and distribution management is combined in mode 2 can be unequal, with suitable
It is each that the renewal frequency for answering fast variable different from gradual amount, power supply and distribution management combination and information processing computer are provided with autonomous switching
From the ability of telemetry mode.
Claims (2)
1. design method is transmitted in a kind of time-sharing multiplex multi-mode telemetering characterized by comprising
To test load multi-mode system, possible power-up combination is grouped within the task phase, and simultaneously powered up equipment is sorted out
It is one group, a kind of corresponding telemetering group frame pattern；
It determines that the period multi-frame number under each pattern is odd number, the telemetry to be transmitted under each pattern is screened, is sieved
The high data of significance level are selected, and by the high data compression byte post package of the significance level at cyclic telemetering frame；To be
Demand, which is passed, under random data during system work is packaged into random telemetry frame one by one；
Different modes is distinguished by different Data Identification codes in the fixation position of the cyclic telemetering frame and random telemetry frame；
According to telemetry data transmission period sending cycle telemetry frame or random telemetry frame.
2. design method is transmitted in a kind of time-sharing multiplex multi-mode telemetering as described in claim 1, which is characterized in that go out in system
When now passing demand under random telemetry frame, passed under pause period telemetry frame, by passing current telemetry state under random frame, and it is continuous
Transmission 4 times；After current random frame passes down, cyclic telemetering frame is passed under continuing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111740806A (en) * | 2020-05-06 | 2020-10-02 | 北京电子工程总体研究所 | Telemetry data framing method and system with self-adaptive variable frame length |
| CN112187411A (en) * | 2020-09-30 | 2021-01-05 | 中国科学院微小卫星创新研究院 | Satellite telemetry data downloading method based on telemetry packet multiplexing |
| CN113193899A (en) * | 2021-03-04 | 2021-07-30 | 上海航天控制技术研究所 | Time division multiplexing satellite telemetry method and apparatus |
| CN113395176A (en) * | 2021-06-07 | 2021-09-14 | 北京轩宇空间科技有限公司 | Variable bandwidth control method and device for on-track data transmission |
| CN113405976A (en) * | 2021-06-07 | 2021-09-17 | 北京轩宇空间科技有限公司 | Main control polling acquisition transmission method and device for on-orbit irradiation test |
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| CN113395176B (en) * | 2021-06-07 | 2022-07-05 | 北京轩宇空间科技有限公司 | Variable bandwidth control method and device for on-track data transmission |
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