CN104199324A - Reliable switching method for multi-mode remote measurement - Google Patents
Reliable switching method for multi-mode remote measurement Download PDFInfo
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- CN104199324A CN104199324A CN201410413118.7A CN201410413118A CN104199324A CN 104199324 A CN104199324 A CN 104199324A CN 201410413118 A CN201410413118 A CN 201410413118A CN 104199324 A CN104199324 A CN 104199324A
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Abstract
The invention relates to a reliable switching method for multi-mode remote measurement, and the method comprises the following steps of: defining remote-measurement modes of an aircraft according to remote-measurement demands, triggering remote-measurement mode transition by combining remote control commands with programmed instructions, timely monitoring to the remote-measurement modes of the aircraft, upon difference among the remote-measurement mode transition and the set results of the remote control commands or the programmed instructions, again transmitting the remote-measurement commands or the programmed instructions, and again triggering them to precisely shift the remote-measurement mode, through the method, large-scale data with multiple characteristics can be collected, stored and transmitted, according to the task stage and mode of the aircraft, timely adjusting the remote-measurement mode.
Description
Technical field
The present invention relates to aerospacecraft data management system field, particularly relate to the reliable changing method of a kind of multi-modal remote measurement.
Background technology
Telemetry parameter on aerospacecraft comprises unit voltage, unit state, digital quantity, temperature, pressure, mechanics parameter etc., is the Main Basis that judges aircraft running status.Number guard system is the main subsystem that realizes Telemetry Data Acquisition, processing and transmission, and major function comprises Telemetry Data Acquisition, telemetry volume frame, telemetry storage, telemetry playback etc.
On the aerospacecrafts such as satellite, conventionally adopt conventional P CM telemetry scheme.PCM remote measurement has fixing frame format layout, and the position of every road telemetry parameter in telemetry frame form remains unchanged in whole task phase, and every road parameter has fixing sample frequency requirement, does not also substantially change in whole task phase.PCM telemetry maturation, data processing scheme is simple, and reliability is high, in ripe model, is widely used.
But along with increasing of telemetry kind and quantity on aerospacecraft, the characteristic of telemetry is more complicated, is mainly manifested in: 1) data capacity increases; 2) sample frequency of data is different; 3) moment that data produce is unfixing; 4) different task section has different remote measurements and requires etc.
Above-mentioned variation is had higher requirement to telemetry scheme, has the PCM remote measurement of anchor-frame form to addressing the above problem the larger difficulty of existence.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of multi-modal remote measurement reliable changing method, realize collection, storage and transmission extensive, many performance datas, and according to the task phase of aircraft, mission mode, adjust in real time remote measurement mode.
Above-mentioned purpose of the present invention is achieved by following technical solution:
The reliable changing method of a kind of multi-modal remote measurement, comprises the following steps:
The first step, according to the working stage of aircraft and mission mode, determine remote measurement mode number M, and each remote measurement mode be defined as to the set of one group of data source bag, m remote measurement mode is K
mthe set of individual data source bag composition, wherein m=1～M, the K corresponding with m
mbe respectively K
1, K
2..., K
m, m, K
mbe positive integer; Wherein each data source bag is made up of one group of data encapsulation with same characteristic features, and the data source bag after encapsulation indicates described data characteristics, and has corresponding dispatching cycle and priority according to data characteristics;
Aircraft, according to dispatching cycle and the priority of each data source bag in remote measurement mode, receives the data source bag of extracting data from aircraft, and by the data source bag composition Frame after described extraction, then sends described Frame to land station;
Second step, by telecommand, program control command array mode, remote measurement Mode-switch is triggered, if aircraft receives the telecommand that land station sends, according to telecommand, remote measurement Mode-switch is triggered, if aircraft receives the program control command that aircraft program control module sends, according to program control command, remote measurement Mode-switch is triggered;
The 3rd step, complete second step remote measurement Mode-switch trigger after, in the telemetry receiving at aircraft, reading " fixing radio frequency channel " parameter identifies, the remote measurement mode of identification aircraft current time, if described remote measurement mode is not according to the remote measurement mode after the handover trigger of second step, resend program control command or telemetry command, return to second step operation.
In the above-mentioned reliable changing method of multi-modal remote measurement, in the first step, aircraft is according to dispatching cycle and the priority of each data source bag in remote measurement mode, receive the data source bag of extracting data from aircraft, and by the data source bag composition Frame after described extraction, its specific implementation process is as follows:
(a), extracting moment t, determine the each data source bag that meets schedulable condition dispatching cycle, if i.e. mod (t, T
m,n)=0, meets schedulable condition the dispatching cycle of n data source bag of m remote measurement mode, wherein, and T
m,nbe the dispatching cycle of n data source bag of m remote measurement mode, mod is that remainder is calculated, m=1～M, n=1～K
m;
(b), according to the priority of data source bag by high order on earth, the each data source bag that meets schedulable condition that step (a) is determined sorts, and by the data source bag composition Frame after sequence.
In the above-mentioned reliable changing method of multi-modal remote measurement, in second step, in the time utilizing telecommand to trigger remote measurement Mode-switch, specifically trigger implementation procedure as follows:
In the time that aircraft receives the telecommand of land station's transmission, determine the remote measurement mode that described telecommand is specified, if described appointment remote measurement mode is different from current remote measurement mode, sending instruction triggers remote measurement mode and switch, is the remote measurement mode that telecommand is specified by the remote measurement Mode-switch of current aircraft.
In the above-mentioned reliable changing method of multi-modal remote measurement, in second step, in the time utilizing program control command to trigger remote measurement Mode-switch, specifically trigger implementation procedure as follows:
In the time that aircraft receives the program control command of aircraft program control module transmission, determine the remote measurement mode that described program control command is specified, if described appointment remote measurement mode is different from current remote measurement mode, sending instruction triggers remote measurement mode and switch, is the remote measurement mode that program control command is specified by the remote measurement Mode-switch of current aircraft; And described program control command is backed up.
In the reliable changing method of the multi-modal remote measurement of above-mentioned one, in the 3rd step, if need to resend program control command, remote measurement Mode-switch is triggered again, the program control command backing up in second step is resend once.
The present invention compared with prior art has following beneficial effect:
(1) the present invention is according to the working stage of aircraft and mission mode, define multiple remote measurement mode, the set that wherein each remote measurement mode is one group of data source bag, for the remote measurement mode of same definition, according to the dispatching cycle of data source bag and priority data source bag being extracted, system is simple, flexibly, thereby meet the remote measurement demand of aircraft under different operating stage and mission mode, overcome the shortcoming that conventional P CM remote measurement can not meet multiple telemetry mode demand, and overcome the shortcoming of conventional P CM remote measurement system complexity under time-varying characteristics telemetry mode,
(2) the present invention adopts telecommand or program control command to realize remote measurement Mode-switch to trigger, i.e. two kinds of instructions all can realize the triggering of remote measurement mode, the dirigibility that has improved handover trigger;
(3) the present invention completes after the triggering of remote measurement Mode-switch, in the telemetry receiving at aircraft, reading " fixing radio frequency channel " parameter identifies, the remote measurement mode of identification aircraft current time, if remote measurement Mode-switch result is incorrect, by resending program control command or telemetry command, remote measurement Mode-switch is triggered again, the remote measurement mode of guaranteeing aircraft current time is consistent with the remote measurement mode of program control command or telemetry command appointment, can improve the reliability of remote measurement Mode-switch.
Brief description of the drawings
Fig. 1 is remote measurement modal definition schematic diagram of the present invention;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail:
Remote measurement mode refers to the general designation of a kind of telemetry mode under particular demands constraint, different remote measurement mode are corresponding to different working stages and mission mode, therefore there is different data acquisition contents, it is the data characteristics difference of image data, conventional P CM remote measurement adopts anchor-frame format structure, when defining simultaneously, multiple different remote measurement mode there is technical difficulty realizing, the present invention fully utilizes eight kinds of business that AOS agreement provides, realize the definition of multiple remote measurement mode, can adapt to remote measurement mode with task, dynamic change demand in time.
Wherein, AOS agreement comprises two kinds of Data Structures, is respectively data source pack arrangement and data frame structure, wherein:
Data source pack arrangement is a kind of data structure of application-orientation, and different data source bags have different data characteristicses, and wherein, data characteristics comprises data type, message transmission rate, data length, data content, and the form of data source bag is as shown in table 1:
The data source packet format of application-orientation in table 1 AOS agreement
Data frame structure is a kind of data structure towards transmitting procedure, and wherein, data frame structure is realized multiplexing to Same Physical channel by the virtual channel identification, and the form of Frame is as shown in table 2.
In table 2 AOS agreement towards the data frame format of transmitting procedure
The reliable changing method of multi-modal remote measurement of the present invention, comprises the following steps:
The first step, according to the working stage of aircraft and mission mode, determine remote measurement mode number M, and the remote measurement requirement under work at present stage and mission mode according to aircraft, each remote measurement mode is defined as to the set of one group of data source bag, m remote measurement mode is K
mthe set of individual data source bag composition, this data source bag set can meet the remote measurement demand of aircraft under work at present stage and mission mode, wherein m=1～M, the K corresponding with m
mbe respectively K
1, K
2..., K
m, m, K
mbe positive integer.
Wherein, data source bag is made up of one group of data encapsulation with same characteristic features, and the data source bag after encapsulation indicates described data characteristics, and has corresponding dispatching cycle and priority according to data characteristics; Wherein encapsulation can be carried out according to the data source packet format of AOS agreement.
Under different mission phases and mission mode, according to the take remote measurement organization and administration of data of different remote measurement mode, be that aircraft is according to dispatching cycle and the priority of each data source bag in remote measurement mode, receive the data source bag of extracting data from aircraft, and by the data source bag composition Frame after described extraction, and send described Frame to land station, wherein, the specific implementation process of the extraction of data source bag and framing is as follows:
(a), extracting moment t, determine the each data source bag that meets schedulable condition dispatching cycle, if i.e. mod (t, T
m,n)=0, meets schedulable condition the dispatching cycle of n data source bag of m remote measurement mode, wherein, and T
m,nbe the dispatching cycle of n data source bag of m remote measurement mode, mod is that remainder is calculated, m=1～M, n=1～K
m;
(b), according to the priority of data source bag by high order on earth, the each data source bag that meets schedulable condition that step (b) is determined sorts, data source bag after sequence composition Frame.
Remote measurement modal definition schematic diagram as shown in Figure 1, system has defined 3 remote measurement mode according to the working stage of three kinds of aircraft and mission mode, wherein:
The remote measurement mode 1 that mission phase 1 and mission mode 1 define comprises two data source bags, is respectively data source bag 1 and data source bag 2;
The remote measurement mode 2 that mission phase 2 and mission mode 2 define comprises 3 data source bags, is respectively data source bag 3, data source bag 4 and data source bag 5;
The remote measurement mode 3 that mission phase 3 and mission mode 3 define comprises 3 data source bags, is respectively data source bag 6, data source bag 7 and data source bag 8;
Wherein are respectively the priority of data source bag 1～8, dispatching cycle R1～R8, T1～T8.
Second step, by telecommand, program control command array mode, remote measurement Mode-switch is triggered, if receive telecommand, according to telecommand, remote measurement Mode-switch is triggered, if receive program control command, according to program control command, remote measurement Mode-switch is triggered, the specific implementation process of its handover trigger is as follows:
In the time that aircraft receives the telecommand of land station's transmission, described telecommand is analyzed, obtain instruction corresponding aircraft working stage and task status, thereby determine the remote measurement mode that telecommand is specified, if described appointment remote measurement mode is different from current remote measurement mode, sending instruction triggers remote measurement mode and switch, is the remote measurement mode that telecommand is specified by the remote measurement Mode-switch of current aircraft.
In the time that aircraft receives the program control command of aircraft program control module transmission, described program control command is analyzed, obtain instruction corresponding aircraft working stage and task status, thereby determine the remote measurement mode that described program control command is specified, if described appointment remote measurement mode is different from current remote measurement mode, sending instruction triggers remote measurement mode and switch, is the remote measurement mode that program control command is specified by the remote measurement Mode-switch of current aircraft; And described program control command is backed up.
The 3rd step, complete second step remote measurement Mode-switch trigger after, in the telemetry receiving at aircraft, reading " fixing radio frequency channel " parameter identifies, the remote measurement mode of identification aircraft current time, if described remote measurement mode is not according to the remote measurement mode after the handover trigger of second step, resend program control command or telemetry command, return to second step operation.This step operation is that the remote measurement mode of specifying with program control command or telemetry command in order to ensure the remote measurement mode of aircraft current time is consistent, can improve the reliability of remote measurement Mode-switch, wherein:
If need to resend program control command, remote measurement Mode-switch is triggered again, the program control command backing up in second step is resend once;
If need to resend telecommand, remote measurement Mode-switch is triggered again, send instructions to land station's request and resend previous telecommand.
Embodiment:
(1) according to the working stage of aircraft and mission mode, determine aircraft and have 2 remote measurement mode, be respectively remote measurement mode A and remote measurement mode B, i.e. M=2;
Wherein, remote measurement mode A has 2 data source bags, is respectively data source bag C1 and data source bag C2; Remote measurement mode B has 3 data source bags, is respectively data source bag C3, data source bag C4 and data source bag C5; Priority and dispatching cycle that the data source bag of above remote measurement mode is corresponding are as shown in table 3:
The data source bag of remote measurement mode corresponding priority and dispatching cycle in table 3 embodiment
Definition according to the present invention to remote measurement mode, in the time of moment t=0.5s, 1s, 1.5s, 2s and 2.5s, the data source bag that each remote measurement mode is extracted is as shown in table 4:
| Moment | Remote measurement mode A | Remote measurement mode B |
| 0.5s | { data source bag C1} | { data source bag C4} |
| 1s | { data source bag C2, data source bag C1} | { data source bag C4} |
| 1.5s | { data source bag C1} | { data source bag C3, data source bag C4} |
| 2s | { data source bag C2, data source bag C1} | { data source bag C5, data source bag C3, data source bag C4} |
| 2.5s | { data source bag C1} | { data source bag C4} |
(2) in t=1～2000s process, the duty of aircraft is as follows:
In the time of t=1s, the remote measurement mode of aircraft is remote measurement mode A;
In the time of t=300s, receive telecommand, this telecommand is analyzed, analysis result shows that the working stage of aircraft or duty change, need to be by remote measurement Mode-switch to remote measurement mode B;
In the time of t=1800s, receive program control command, this program control command is analyzed, analysis result shows that the working stage of aircraft or duty change, need to be by remote measurement Mode-switch to remote measurement mode A;
According to the reliable changing method of multi-modal remote measurement of the present invention, in the time of t=300s, need to trigger remote measurement Mode-switch according to telecommand, send instruction remote measurement mode is switched to remote measurement mode B by remote measurement mode A; In the time of t=1800s, need to trigger remote measurement Mode-switch according to program control command, send instruction remote measurement mode is switched to remote measurement mode A by remote measurement mode B, and preserve this program control command;
(3) complete after the remote measurement Mode-switch of t=300s, in the telemetry receiving at aircraft, reading " fixing radio frequency channel " parameter identifies, the remote measurement mode of identification aircraft current time, if described remote measurement mode is remote measurement mode A, according to the handover trigger of step (2), aircraft does not correctly complete remote measurement Mode-switch, land station resends telecommand, return to step (2) and carry out handover trigger again, and the mode identification that again takes remote measurement, until remote measurement Mode-switch is B;
Complete after the remote measurement Mode-switch of t=1800s, in the telemetry receiving at aircraft, reading " fixing radio frequency channel " parameter identifies, the remote measurement mode of identification aircraft current time, if described remote measurement mode is remote measurement mode B, according to the handover trigger of step (2), aircraft does not correctly complete remote measurement Mode-switch, aircraft resends the telecommand of backup, return to step (2) and carry out handover trigger again, and the mode identification that again takes remote measurement, until remote measurement Mode-switch is A.
The above; be only the embodiment of the best of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with in technical scope that those skilled in the art disclose in the present invention; the variation that can expect easily or replacement, within all should being encompassed in protection scope of the present invention.
The content not being described in detail in instructions of the present invention belongs to professional and technical personnel in the field's known technology.
Claims (5)
1. the reliable changing method of multi-modal remote measurement, is characterized in that comprising the following steps:
The first step, according to the working stage of aircraft and mission mode, determine remote measurement mode number M, and each remote measurement mode be defined as to the set of one group of data source bag, m remote measurement mode is K
mthe set of individual data source bag composition, wherein m=1～M, the K corresponding with m
mbe respectively K
1, K
2..., K
m, m, K
mbe positive integer; Wherein each data source bag is made up of one group of data encapsulation with same characteristic features, and the data source bag after encapsulation indicates described data characteristics, and has corresponding dispatching cycle and priority according to data characteristics;
Aircraft, according to dispatching cycle and the priority of each data source bag in remote measurement mode, receives the data source bag of extracting data from aircraft, and by the data source bag composition Frame after described extraction, then sends described Frame to land station;
Second step, by telecommand, program control command array mode, remote measurement Mode-switch is triggered, if aircraft receives the telecommand that land station sends, according to telecommand, remote measurement Mode-switch is triggered, if aircraft receives the program control command that aircraft program control module sends, according to program control command, remote measurement Mode-switch is triggered;
The 3rd step, complete second step remote measurement Mode-switch trigger after, in the telemetry receiving at aircraft, reading " fixing radio frequency channel " parameter identifies, the remote measurement mode of identification aircraft current time, if described remote measurement mode is not according to the remote measurement mode after the handover trigger of second step, resend program control command or telemetry command, return to second step operation.
2. the reliable changing method of the multi-modal remote measurement of one according to claim 1, it is characterized in that: in the first step, aircraft is according to dispatching cycle and the priority of each data source bag in remote measurement mode, receive the data source bag of extracting data from aircraft, and by the data source bag composition Frame after described extraction, its specific implementation process is as follows:
(a), extracting moment t, determine the each data source bag that meets schedulable condition dispatching cycle, if i.e. mod (t, T
m,n)=0, meets schedulable condition the dispatching cycle of n data source bag of m remote measurement mode, wherein, and T
m,nbe the dispatching cycle of n data source bag of m remote measurement mode, mod is that remainder is calculated, m=1～M, n=1～K
m;
(b), according to the priority of data source bag by high order on earth, the each data source bag that meets schedulable condition that step (a) is determined sorts, and by the data source bag composition Frame after sequence.
3. the reliable changing method of the multi-modal remote measurement of one according to claim 1, is characterized in that: in second step, in the time utilizing telecommand to trigger remote measurement Mode-switch, specifically trigger implementation procedure as follows:
In the time that aircraft receives the telecommand of land station's transmission, determine the remote measurement mode that described telecommand is specified, if described appointment remote measurement mode is different from current remote measurement mode, sending instruction triggers remote measurement mode and switch, is the remote measurement mode that telecommand is specified by the remote measurement Mode-switch of current flight device.
4. the reliable changing method of the multi-modal remote measurement of one according to claim 1, is characterized in that: in second step, in the time utilizing program control command to trigger remote measurement Mode-switch, specifically trigger implementation procedure as follows:
In the time that aircraft receives the program control command of aircraft program control module transmission, determine the remote measurement mode that described program control command is specified, if described appointment remote measurement mode is different from current remote measurement mode, sending instruction triggers remote measurement mode and switch, is the remote measurement mode that program control command is specified by the remote measurement Mode-switch of current flight device; And described program control command is backed up.
5. the reliable changing method of the multi-modal remote measurement of one according to claim 1, it is characterized in that: in the 3rd step, if need to resend program control command, remote measurement Mode-switch is triggered again, the program control command backing up in second step is resend once.
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| CN108599835A (en) * | 2018-05-08 | 2018-09-28 | 上海微小卫星工程中心 | A kind of remote-controlled customized general packet telemetry technology |
| CN111158290A (en) * | 2019-12-31 | 2020-05-15 | 埃游科技（深圳）有限公司 | Multi-modal control method and device for unmanned equipment |
| CN113813615A (en) * | 2021-09-27 | 2021-12-21 | 北京理工大学重庆创新中心 | Air-ground amphibious equipment and mode switching system and method thereof |
| CN113813615B (en) * | 2021-09-27 | 2023-08-04 | 北京理工大学重庆创新中心 | Air-ground amphibious equipment and mode switching system and method thereof |
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