CN116866113A - Method for dynamically distributing and packing telemetry parameter resources of test device in cabinet - Google Patents
Method for dynamically distributing and packing telemetry parameter resources of test device in cabinet Download PDFInfo
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- CN116866113A CN116866113A CN202311138053.5A CN202311138053A CN116866113A CN 116866113 A CN116866113 A CN 116866113A CN 202311138053 A CN202311138053 A CN 202311138053A CN 116866113 A CN116866113 A CN 116866113A
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- 238000012360 testing method Methods 0.000 title claims abstract description 152
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000012856 packing Methods 0.000 title claims abstract description 6
- 230000010365 information processing Effects 0.000 claims abstract description 76
- 230000005540 biological transmission Effects 0.000 claims abstract description 37
- 238000004891 communication Methods 0.000 claims abstract description 11
- 238000012163 sequencing technique Methods 0.000 claims abstract description 11
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013468 resource allocation Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/407—Bus networks with decentralised control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/30—Arrangements in telecontrol or telemetry systems using a wired architecture
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention relates to the field of multiplexing communication of aerospace equipment, in particular to a method for dynamically distributing and packing telemetry parameter resources of a test device in a cabinet, which comprises the following steps: s1, an information processing unit confirms the number of test devices connected to a 1553B bus and the terminal address of each test device through a bus inspection communication mode; s2, the information processing unit collects telemetry parameters of all test devices in batches according to terminal address sequencing; s3, the information processing unit packs the telemetry parameters of all the acquired test devices and sends the telemetry parameters to external equipment; the total length of the telemetry parameters of all test devices after the package is limited to 15B, the length of the telemetry parameters of each test device is 5B, the high 4bit of the first byte is filled in the terminal address, and the other 4.5B is the telemetry parameters. According to the invention, the self-adaptive dynamic allocation and grouping of the telemetry parameter resources are realized according to the number of the test devices which start up, and the waste of telemetry parameter transmission resources is avoided.
Description
Technical Field
The invention relates to the technical field of multiplexing communication of aerospace equipment, in particular to a method for dynamically distributing and packaging telemetry parameter resources of a test device in a cabinet.
Background
Space stations in China are fully built, a large number of test devices sequentially ascend to the space stations, and on-orbit tests are developed in a machine cabinet in a rolling mode. The information processing unit of the cabinet is used as a bus controller of the test devices, and each test device is used as a remote terminal to be accessed into a bus. The information processing unit is responsible for collecting telemetry parameters reflecting the working states of all the test devices, uniformly transmitting the telemetry parameters to the space station platform after packaging, and enabling the space station platform to descend to the ground, so that ground staff can judge the working states of all the test devices.
The traditional manned spacecraft telemetry parameter acquisition method adopts a static resource allocation and packet-forming mechanism, a bus controller allocates telemetry parameters with fixed length for each remote terminal connected to the bus, acquires the telemetry parameters of each remote terminal according to a fixed period, forms packets according to a fixed format, and transmits the packets to a space station platform uniformly. Because a large number of cabinets are configured in the space station, the transmission length of the telemetry parameters distributed to each cabinet is limited, the number of test devices in the cabinets is large, the on-orbit test plans of the test devices are different, meanwhile, the number of the test devices which are started up are uncertain, the conventional telemetry parameter acquisition method can lead to the smaller number of the telemetry parameters distributed to each test device, if a large number of the test devices are not started up, the positions of the telemetry parameters distributed to the cabinets are filled with fixed values, so that the telemetry parameter resources externally transmitted by the cabinets are wasted, the state information of the test devices which are started up and are transmitted to the ground is smaller, and the requirement of rapidly judging the on-orbit working state of the test devices on the ground can not be met.
Disclosure of Invention
In order to overcome the defects of static allocation and grouping of the prior telemetry parameter resources, the invention aims to provide a method for dynamically allocating and grouping the telemetry parameter resources of a test device in a cabinet, which realizes the self-adaptive dynamic allocation and grouping of the telemetry parameter resources according to the number of the test devices which are started to work and avoids wasting the telemetry parameter transmission resources.
The invention provides a method for dynamically distributing and packaging telemetering parameter resources of a test device in a cabinet, which comprises the following steps:
s1, an information processing unit confirms the number of test devices which are connected into a 1553B bus in a cabinet and the terminal address of each test device through a bus inspection communication mode;
s2, the information processing unit acquires telemetry parameters of all the test devices in batches according to the number of the test devices connected to the 1553B bus at one time or according to terminal address sequencing;
s3, the information processing unit packs the telemetry parameters of all the acquired test devices and sends the telemetry parameters to external equipment; the total length of the telemetry parameters of all test devices after the package is limited to 15B, the length of the telemetry parameters of each test device is 5B, wherein the high 4 bits of the first byte are filled in the terminal address, and the other 4.5B are telemetry parameters.
Preferably, in step S1, after each test device is powered on, the information processing unit performs bus patrol communication with each test device, and confirms the number of test devices accessing the 1553B bus and the terminal address of each test device.
Preferably, the step S2 specifically includes the following steps:
s21, updating the telemetry parameters of each power-on working test device every 500ms, and sending the telemetry parameters with the length of 5B to a telemetry cache;
s22, the information processing unit reads telemetry parameters in a telemetry cache of each test device which is powered on every 500 ms;
if the number of the test devices is 1-3, the information processing unit directly writes the read telemetry parameters of the three test devices into a telemetry transmission buffer of the information processing unit;
if the number of the test devices is 4-6, sequencing the test devices according to the terminal addresses from small to large, writing the read telemetry parameters of the first to third test devices into a telemetry transmission buffer of the information processing unit in the first 500ms, and writing the read telemetry parameters of the rest test devices into the telemetry transmission buffer in the second 500 ms;
if the number of the test devices is 7-9, sequencing the test devices according to the terminal addresses from small to large, writing the read telemetry parameters of the first to third test devices into a telemetry transmission buffer of the information processing unit in the first 500ms, writing the read telemetry parameters of the fourth to sixth test devices into a telemetry transmission buffer of the information processing unit in the second 500ms, and writing the read telemetry parameters of the rest test devices into a telemetry transmission buffer of the information processing unit in the third 500 ms;
if the number of the test devices is 10-12, sequencing the test devices according to the terminal addresses from small to large, writing the read telemetry parameters of the first to third test devices into the telemetry transmission buffer of the information processing unit in the first 500ms, writing the read telemetry parameters of the fourth to sixth test devices into the telemetry transmission buffer of the information processing unit in the second 500ms, writing the read telemetry parameters of the seventh to ninth test devices into the telemetry transmission buffer of the information processing unit in the third 500ms, and writing the read telemetry parameters of the rest test devices into the telemetry transmission buffer of the information processing unit in the fourth 500 ms.
Preferably, the external device reads the telemetry parameters sent by the telemetry send cache every 500 ms.
Preferably, when the total length of the telemetry parameters of all test devices after the package is less than 15B, the information processing unit fills 0xAA to 15B and then sends the data to the external device.
Compared with the existing static resource allocation and package mode, the remote measurement parameter transmission resources are dynamically allocated according to the number of the test devices which start up, the cabinet is allocated to the test devices which start up according to the acquired remote measurement parameter dynamic package, so that the ground can quickly acquire the on-orbit state of the test devices, and waste of the remote measurement parameter transmission resources is avoided.
Drawings
Fig. 1 is a block diagram showing connection of an information processing unit, a test apparatus and an external device according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for dynamically allocating and packing telemetry parameter resources of a test device in a cabinet according to an embodiment of the invention.
FIG. 3 is a pack diagram of telemetry parameters of a test device, according to an embodiment of the invention.
FIG. 4 is a diagram of a packet mode of telemetry parameters of an information processing unit for a plurality of test devices according to an embodiment of the present invention.
Detailed Description
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description, like modules are denoted by like reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, a detailed description thereof will not be repeated.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limiting the invention.
As shown in FIG. 1, a plurality of test devices and an information processing unit are installed in a cabinet, the information processing unit is connected with the plurality of test devices through a 1553B bus, the maximum communication rate is 1Mbps, at most 12 test devices are supported to be connected with the 1553B bus, the information processing unit collects telemetry parameters reflecting the working states of the test devices according to a period of 500ms, the length of the telemetry parameters of each test device is 5B, and the information processing unit sends the collected telemetry parameter groups of each test device to external equipment.
The information processing unit is connected with the external equipment through the Ethernet, the maximum communication rate is 100Mbps, the information processing unit packs the telemetry parameters of the information processing unit and the telemetry parameters of all the test devices after the packing, and then sends the packed telemetry parameters to the external equipment through the Ethernet, the total length of the packed telemetry parameters is 32B, the length of the telemetry parameters of the information processing unit is 17B, and the total length of the telemetry parameters of all the test devices in the collected cabinet is limited to 15B.
As shown in fig. 2, the method for dynamically allocating and packaging telemetry parameter resources of a test device in a cabinet provided by the embodiment of the invention comprises the following steps:
s1, the information processing unit confirms the number of test devices which are connected into the 1553B bus in the cabinet and the terminal address of each test device through a bus inspection communication mode.
After each test device is powered on, the information processing unit performs bus inspection communication with each test device, and confirms the number N of the test devices connected to the 1553B bus and the terminal address RTn of each test device.
And S2, the information processing unit acquires telemetry parameters of all the test devices in batches according to the number of the test devices connected to the 1553B bus at one time or according to terminal address sequencing.
The step S2 specifically comprises the following steps:
s21, each powered testing device updates own telemetry parameters every 500ms, and the telemetry parameters with the length of 5B are sent to a telemetry cache through a CPU of the testing device.
S22, the information processing unit reads telemetry parameters in telemetry caches of all the test devices which are powered on every 500ms through a CPU of the information processing unit.
If the number of the test devices in power-on operation is N=1-3, the information processing unit directly writes the telemetry parameters of the three read test devices into a telemetry transmission buffer of the information processing unit, and the external equipment reads once every 500 ms.
If the number of the test devices in the power-on operation is n=4-6, sequencing the test devices according to the terminal addresses from small to large, writing the telemetry parameters of the first three test devices into a telemetry transmission buffer of the information processing unit in the first 500ms, writing the telemetry parameters of the last 1-3 test devices into the telemetry transmission buffer in the second 500ms, and reading the telemetry parameters once every 500ms by the external equipment.
If the number of the test devices in the power-on operation is n=7-9, the test devices are ordered according to the terminal addresses from small to large, the information processing unit writes the telemetry parameters of the first three test devices into the telemetry transmission buffer of the information processing unit in the first 500ms, the information processing unit writes the telemetry parameters of the middle three test devices into the telemetry transmission buffer of the information processing unit in the second 500ms, and the information processing unit writes the telemetry parameters of the last 1-3 test devices into the telemetry transmission buffer of the information processing unit in the third 500ms, wherein the external equipment reads once every 500 ms.
If the number of the test devices in the power-on operation is n=10-12, the test devices are ordered according to the terminal addresses from small to large, the information processing unit writes the first three read telemetry parameters into the telemetry transmission buffer of the information processing unit in the first 500ms, the information processing unit writes the second 500ms and the third 500ms of the telemetry parameters of the last six read test devices into the telemetry transmission buffer of the information processing unit, and the information processing unit writes the last 1-3 read telemetry parameters of the test devices into the telemetry transmission buffer of the information processing unit in the fourth 500ms, wherein the external equipment reads once every 500 ms.
S3, the information processing unit packs the telemetry parameters of all the acquired test devices and sends the telemetry parameters to external equipment; the total length of the telemetry parameters of all test devices after the package is limited to 15B, the length of the telemetry parameters of each test device is 5B, wherein the high 4 bits of the first byte are filled in the terminal address, and the other 4.5B are telemetry parameters.
And the telemetry parameters of the test device after the grouping and the telemetry parameters of the information processing unit are grouped and sent to external equipment. The total length of the telemetry parameters after the grouping is 32B, wherein the length of the telemetry parameters of the information processing unit is 17B, and the total length of the telemetry parameters of all the test devices after the grouping is limited to 15B, namely the information processing unit can collect the telemetry parameters of at most three test devices every cycle.
For each test device, the telemetry parameter length is fixed to be 5B, wherein the high 4bit of byte 1 is the terminal identifier of the test device, the terminal address is filled, and the other 4.5B (the low 4bit of byte 1 and the 8 bits of bytes 2-5) are telemetry parameters, as shown in fig. 3.
The information processing unit forms a package of telemetry parameters according to the number of the test devices which are powered on, and transmits the package of telemetry parameters to the external device, as shown in fig. 4.
If the total length of the telemetry parameters of each test device acquired by the information processing unit is less than 15B, the information processing unit is filled with 0xAA to 15B, and then the information processing unit sends the information to external equipment.
For example, only 1 test device is powered on, the telemetry parameters of the collected test devices are only 5B, and the information processing unit fills 0xAA of 10B and then sends the data to an external device.
According to the invention, the telemetering parameter transmission resources are dynamically allocated according to the number of the test devices which start up, and the cabinet is externally allocated to the test devices which start up according to the acquired telemetering parameter dynamic packet, so that the ground can quickly acquire the on-orbit state of the test devices, and the waste of the telemetering parameter transmission resources is avoided.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present disclosure may be performed in parallel, sequentially, or in a different order, provided that the desired results of the technical solutions of the present disclosure are achieved, and are not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (5)
1. The method for dynamically distributing and packing the telemetry parameter resources of the test device in the cabinet is characterized by comprising the following steps:
s1, an information processing unit confirms the number of test devices which are connected into a 1553B bus in a cabinet and the terminal address of each test device through a bus inspection communication mode;
s2, the information processing unit acquires telemetry parameters of all the test devices in batches according to the number of the test devices connected to the 1553B bus at one time or according to terminal address sequencing;
s3, the information processing unit packs the telemetry parameters of all the acquired test devices and sends the telemetry parameters to external equipment; the total length of the telemetry parameters of all test devices after the package is limited to 15B, the length of the telemetry parameters of each test device is 5B, wherein the high 4 bits of the first byte are filled in the terminal address, and the other 4.5B are telemetry parameters.
2. The method for dynamically allocating and packaging remote measurement parameter resources of test devices in a cabinet according to claim 1, wherein in step S1, after each test device is powered up, the information processing unit performs bus patrol communication with each test device, and confirms the number of test devices accessing the 1553B bus and the terminal address of each test device.
3. The method for dynamically allocating and packaging telemetry parameter resources of an in-cabinet test device according to claim 2, wherein the step S2 specifically comprises the steps of:
s21, updating the telemetry parameters of each power-on working test device every 500ms, and sending the telemetry parameters with the length of 5B to a telemetry cache;
s22, the information processing unit reads telemetry parameters in a telemetry cache of each test device which is powered on every 500 ms;
if the number of the test devices is 1-3, the information processing unit directly writes the read telemetry parameters of the three test devices into a telemetry transmission buffer of the information processing unit;
if the number of the test devices is 4-6, sequencing the test devices according to the terminal addresses from small to large, writing the read telemetry parameters of the first to third test devices into a telemetry transmission buffer of the information processing unit in the first 500ms, and writing the read telemetry parameters of the rest test devices into the telemetry transmission buffer in the second 500 ms;
if the number of the test devices is 7-9, sequencing the test devices according to the terminal addresses from small to large, writing the read telemetry parameters of the first to third test devices into a telemetry transmission buffer of the information processing unit in the first 500ms, writing the read telemetry parameters of the fourth to sixth test devices into a telemetry transmission buffer of the information processing unit in the second 500ms, and writing the read telemetry parameters of the rest test devices into a telemetry transmission buffer of the information processing unit in the third 500 ms;
if the number of the test devices is 10-12, sequencing the test devices according to the terminal addresses from small to large, writing the read telemetry parameters of the first to third test devices into the telemetry transmission buffer of the information processing unit in the first 500ms, writing the read telemetry parameters of the fourth to sixth test devices into the telemetry transmission buffer of the information processing unit in the second 500ms, writing the read telemetry parameters of the seventh to ninth test devices into the telemetry transmission buffer of the information processing unit in the third 500ms, and writing the read telemetry parameters of the rest test devices into the telemetry transmission buffer of the information processing unit in the fourth 500 ms.
4. The method for dynamic allocation and packetization of telemetry parameter resources for in-cabinet test apparatus of claim 3, wherein the external device reads the telemetry parameters sent by the telemetry transmission buffer once every 500 ms.
5. The method for dynamically allocating and grouping telemetry parameters of test devices in a cabinet according to any one of claims 1 to 4, wherein when the total length of telemetry parameters of all test devices after grouping is less than 15B, the information processing unit fills 0xAA to 15B and then sends the result to an external device.
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