CN115001612B - A satellite rapid self-test system and method based on an in-satellite self-test device - Google Patents
A satellite rapid self-test system and method based on an in-satellite self-test device Download PDFInfo
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Abstract
本发明提出一种基于星内自检装置的卫星快速自测试系统及方法,该系统包括BIT(Built‑in‑test)终端、BIT测试上位机、总控服务器、遥测遥控地面设备、地面供电电源;BIT终端放置于卫星星体内部,和BIT测试上位机通过局域网(LAN)相连,接收到BIT测试上位机发送的卫星自检流程启动指令后,按照BIT测试上位机预先注入的测试用例对卫星系统单机及其下位机开展健康状态检查,将检查结果通过LAN上传到BIT测试上位机。本发明代替传统的主要依靠外部地面测试设备的方式,与传统外置式测试设备相比,体积大幅减小、操作简易方便、执行速度更快,并能实现卫星健康状态自检测。
The present invention proposes a satellite rapid self-test system and method based on an in-satellite self-test device, the system comprising a BIT (Built-in-test) terminal, a BIT test host computer, a master control server, a telemetry and remote control ground device, and a ground power supply; the BIT terminal is placed inside the satellite body, and is connected to the BIT test host computer through a local area network (LAN). After receiving a satellite self-test process start instruction sent by the BIT test host computer, a health status check is performed on a satellite system unit and its subordinate machines according to a test case pre-injected by the BIT test host computer, and the check result is uploaded to the BIT test host computer through the LAN. The present invention replaces the traditional method of mainly relying on external ground test equipment. Compared with traditional external test equipment, the volume is greatly reduced, the operation is simple and convenient, the execution speed is faster, and the satellite health status self-check can be realized.
Description
技术领域Technical Field
本发明涉及一种基于星内自检装置的卫星快速自测试系统及方法,属于航天器地面测试领域。The invention relates to a satellite rapid self-test system and method based on an in-satellite self-test device, belonging to the field of spacecraft ground testing.
背景技术Background technique
卫星地面测试是指在地面通过测试设备对卫星各个组成部分进行全面检查,包括软件系统和硬件系统,以确保其发射后在轨道上正常稳定运行。当前卫星的测试主要依靠外部的地面测试设备(EGSE,Electric Ground Support Equipment)对卫星施加激励信号,并采集卫星输出信号,并与预计的结果进行比较,所有的测试流程均在卫星外部的地检设备上完成。Satellite ground testing refers to the comprehensive inspection of all components of the satellite, including the software system and hardware system, through testing equipment on the ground to ensure that it can operate normally and stably in orbit after launch. Currently, satellite testing mainly relies on external ground test equipment (EGSE, Electric Ground Support Equipment) to apply excitation signals to the satellite, collect satellite output signals, and compare them with the expected results. All test processes are completed on the ground inspection equipment outside the satellite.
目前大型卫星的地面测试时需要大量地面设备,其中计算机需要6~10台,专用测试设备包括供配电、遥测遥控和控制系统测试设备。上述设备体积庞大,移动不便,操作方法不一,维护不便。尤其是随着卫星功能越来越复杂,地面测试过程中卫星和地面之间连接的测试电缆数量多,分布在卫星各处,从一个阶段转到另外一个阶段时需要插拔测试电缆,此过程费时费力,测试电缆状态设置需要较多时间。此外,目前的地面测试通过测控通道对卫星进行设置并采集遥测,受测控通道传输速率的限制,对测试效率影响较大。At present, the ground testing of large satellites requires a large number of ground equipment, including 6 to 10 computers, and special test equipment including power supply and distribution, telemetry and remote control, and control system test equipment. The above equipment is large in size, inconvenient to move, and has different operation methods and inconvenient maintenance. Especially as the functions of satellites become more and more complex, the number of test cables connecting the satellite and the ground during ground testing is large and distributed throughout the satellite. When switching from one stage to another, the test cables need to be plugged in and out. This process is time-consuming and labor-intensive, and the test cable status setting takes a long time. In addition, the current ground test uses the measurement and control channel to set up the satellite and collect telemetry. Due to the limitation of the transmission rate of the measurement and control channel, it has a great impact on the test efficiency.
当前卫星产业朝着技术状态复杂程度越来越高、卫星组网规模越来越大的方向发展,地面测试效率成为卫星产业尤其是大规模组网卫星地面制造的瓶颈。通过卫星星体外部测试设备对卫星测试的传统模式,与不断增长的任务需求矛盾日益突出。The current satellite industry is developing towards a direction of increasingly complex technical status and larger satellite networking scale. Ground testing efficiency has become a bottleneck for the satellite industry, especially for ground manufacturing of large-scale networked satellites. The traditional model of satellite testing through satellite body external test equipment is increasingly in conflict with the growing mission requirements.
发明内容Summary of the invention
本发明解决的技术问题是:克服现有技术的不足,提出一种基于星内自检BIT终端装置的卫星快速自测试系统及方法,代替传统的EGSE完成对卫星的单机及其下位机的健康状态检查,减少测试设备数量、体积以及星地连接,提高测试速度,大幅降低测试设备成本和人员需求,适应未来批产卫星的研制模式。The technical problem solved by the present invention is: to overcome the shortcomings of the prior art, to propose a satellite rapid self-test system and method based on an in-satellite self-test BIT terminal device, to replace the traditional EGSE to complete the health status check of a single satellite and its subordinate machines, to reduce the number and volume of test equipment and the satellite-to-ground connection, to increase the test speed, to significantly reduce the cost of test equipment and the demand for personnel, and to adapt to the development model of future mass-produced satellites.
本发明解决技术的方案是:The solution of the present invention is:
一种基于星内自检装置的卫星快速自测试系统,包括BIT终端、BIT测试上位机、总控服务器、遥测遥控地面设备和地面供电电源;BIT终端放置于卫星星体内部;其中:A satellite rapid self-test system based on an in-satellite self-test device comprises a BIT terminal, a BIT test host computer, a master control server, a telemetry and remote control ground device and a ground power supply; the BIT terminal is placed inside the satellite body; wherein:
BIT终端:通过LAN和BIT测试上位机连接,通过总线和卫星连接,接收到BIT测试上位机发送的卫星自检流程启动指令后,按照BIT测试上位机预先注入的测试用例对卫星系统单机及其下位机开展健康状态检查,将卫星健康状态检查结果通过LAN上传到BIT测试上位机;BIT终端支持的总线类型包括1553B、CAN和RS422卫星总线;BIT终端通过机械连接固定在卫星内部,在卫星地面测试场地转阶段期间随卫星移动;BIT terminal: connected to the BIT test host computer via LAN, and connected to the satellite via bus. After receiving the satellite self-test process start command sent by the BIT test host computer, it performs health status checks on the satellite system unit and its subordinate computers according to the test cases pre-injected by the BIT test host computer, and uploads the satellite health status check results to the BIT test host computer via LAN; the bus types supported by the BIT terminal include 1553B, CAN and RS422 satellite buses; the BIT terminal is fixed inside the satellite through mechanical connection and moves with the satellite during the transition period of the satellite ground test site;
BIT测试上位机:通过LAN和BIT终端、总控服务器、遥测遥控地面设备、地面供电电源相连;向BIT终端注入测试用例,发送卫星自检流程启动指令,获取BIT终端上传的卫星健康状态检查结果;向地面供电电源发送自测试系统加电指令和卫星加电遥控指令;向遥测遥控地面设备发送卫星测控与星务系统加电和状态设置指令;BIT test host computer: connected to BIT terminal, master control server, telemetry and remote control ground equipment, and ground power supply through LAN; injects test cases into BIT terminal, sends satellite self-test process start command, obtains satellite health status check results uploaded by BIT terminal; sends self-test system power-on command and satellite power-on remote control command to ground power supply; sends satellite measurement and control and satellite service system power-on and status setting command to telemetry and remote control ground equipment;
总控服务器:用于自测试系统除BIT终端以外各设备的网络控制;Master control server: used for network control of all devices in the self-test system except BIT terminal;
遥测遥控地面设备:通过专用电缆和卫星上的测控与星务系统连接,根据BIT测试上位机发送的卫星测控与星务系统加电和状态设置指令为卫星上的测控与星务系统加电并进行状态设置;Telemetry and remote control ground equipment: connected to the satellite's measurement and control and satellite service system through a dedicated cable, and powered on and set the status of the satellite's measurement and control and satellite service system according to the satellite measurement and control and satellite service system power-on and status setting instructions sent by the BIT test host computer;
地面供电电源:接收到BIT测试上位机发送的自测试系统加电指令和卫星加电遥控指令后,分别给自测试系统和卫星供电。Ground power supply: after receiving the self-test system power-on command and satellite power-on remote control command sent by the BIT test host computer, it supplies power to the self-test system and the satellite respectively.
一种基于星内自检装置的卫星快速自测试系统的自测试方法,具体步骤包括:A self-test method for a satellite rapid self-test system based on an in-satellite self-test device, the specific steps comprising:
步骤一,完成自测试系统和卫星系统的连接;Step 1: Complete the connection between the self-test system and the satellite system;
步骤二,为自测试系统供电,检查自测试系统工作情况是否正常,正常后进入步骤三;Step 2: Power the self-test system and check whether the self-test system works normally. If it works normally, proceed to step 3.
步骤三,BIT测试上位机给卫星内部的BIT终端注入测试用例;Step 3: The BIT test host computer injects test cases into the BIT terminal inside the satellite;
步骤四,BIT测试上位机控制地面供电电源为自测试系统和卫星供电;控制遥测遥控地面设备对卫星测控与星务系统进行加电和状态设置;BIT测试上位机通过BIT终端向卫星发送测试指令,如果能接收到卫星的遥测信息并解析,则认为自测试系统和卫星的遥控遥测通道工作情况正常,BIT测试上位机向BIT终端发送卫星自检流程启动指令;Step 4: The BIT test host computer controls the ground power supply to supply power to the self-test system and the satellite; controls the telemetry and remote control ground equipment to power on and set the status of the satellite measurement and control and satellite service systems; the BIT test host computer sends a test command to the satellite through the BIT terminal. If the satellite's telemetry information can be received and analyzed, it is considered that the self-test system and the satellite's remote control and telemetry channels are working normally, and the BIT test host computer sends a satellite self-test process start command to the BIT terminal;
步骤五,BIT终端根据注入的测试用例,依次通过总线向卫星系统单机及其下位机发送测试指令,接收并判读卫星系统单机及其下位机反馈的遥测数据;Step 5: The BIT terminal sends test instructions to the satellite system unit and its subordinate computers through the bus in turn according to the injected test cases, and receives and interprets the telemetry data fed back by the satellite system unit and its subordinate computers;
步骤六,BIT终端将判读结果和遥测数据通过LAN上传到BIT测试上位机,供人工查阅和后续处理;所述判读结果为卫星健康状态检查结果;Step 6: The BIT terminal uploads the interpretation result and telemetry data to the BIT test host computer via LAN for manual review and subsequent processing; the interpretation result is the satellite health status check result;
步骤七,进行卫星系统断电和地面设备状态恢复。Step seven: Power off the satellite system and restore the ground equipment status.
进一步的,假设挂载于卫星系统主总线上单机有M台,其中第i台单机有N台下位机,i的初值为1,对卫星系统单机的健康状态检查工作流程如下:Furthermore, assuming that there are M stand-alone machines mounted on the main bus of the satellite system, where the i-th stand-alone machine has N subordinate machines, and the initial value of i is 1, the workflow for checking the health status of the satellite system stand-alone machine is as follows:
a)BIT终端给第i台单机发送加电指令;a) The BIT terminal sends a power-on command to the i-th single machine;
b)BIT终端等待该单机加电并启动运行,单机上电时默认工作于主总线;b) The BIT terminal waits for the stand-alone machine to be powered on and start running. When the stand-alone machine is powered on, it works on the main bus by default;
c)BIT终端通过主总线获取第i台单机的遥测包,并解析其电源电压以及相关的遥测信息;c) The BIT terminal obtains the telemetry packet of the i-th single machine through the main bus and analyzes its power supply voltage and related telemetry information;
d)BIT终端根据预先写入的第i台单机遥测信息的判读范围对获取的第i台单机的遥测信息进行判读,如果第i台单机的遥测信息不在该判读范围,则判定第i台单机工作状态异常,记录错误信息,BIT终端通过总线发送关闭指令,关闭第i台单机,i值加1,若i≤M,返回到步骤a),进行下一台单机的检查流程,若i>M则结束;如果第i台单机的遥测信息在该判读范围,则进入步骤e);d) The BIT terminal reads the telemetry information of the i-th single machine according to the pre-written reading range of the telemetry information of the i-th single machine. If the telemetry information of the i-th single machine is not within the reading range, it is determined that the working state of the i-th single machine is abnormal, and the error information is recorded. The BIT terminal sends a shutdown command through the bus to shut down the i-th single machine, and the value of i is increased by 1. If i≤M, return to step a) and perform the inspection process of the next single machine. If i>M, end; if the telemetry information of the i-th single machine is within the reading range, enter step e);
e)BIT终端通过总线发送指令,将第i台单机从主总线切换为备总线;BIT终端通过备总线获取第i台单机的遥测包信息,如果该单机的遥测包信息均能够通过备总线获取,则表明第i台单机的备总线工作正常,BIT终端发送指令将第i台单机切换到主总线,进入步骤f);如果BIT终端无法从备总线获取第i台单机的遥测包信息,则表明第i台单机的备总线存在故障,BIT终端记录错误信息,BIT终端通过总线发送关闭指令,关闭第i台单机,i值加1,若i≤M,返回到步骤a),进行下一台单机的检查流程,若i>M则结束;e) The BIT terminal sends a command through the bus to switch the i-th single machine from the main bus to the standby bus; the BIT terminal obtains the telemetry package information of the i-th single machine through the standby bus. If the telemetry package information of the single machine can be obtained through the standby bus, it indicates that the standby bus of the i-th single machine is working normally. The BIT terminal sends a command to switch the i-th single machine to the main bus and enters step f); if the BIT terminal cannot obtain the telemetry package information of the i-th single machine from the standby bus, it indicates that the standby bus of the i-th single machine has a fault. The BIT terminal records the error information. The BIT terminal sends a shutdown command through the bus to shut down the i-th single machine. The value of i is increased by 1. If i≤M, return to step a) and perform the inspection process of the next single machine. If i>M, end;
f)对第i台单机的所有N台下位机依次进行检查,并记录检查结果,当N台下位机全部检查完毕后,BIT终端通过总线发送关闭指令,关闭第i台单机,i值加1,若i≤M,返回到步骤a),进行下一台单机的检查流程,若i>M则结束。f) Check all N lower machines of the ith single machine in turn and record the inspection results. When all N lower machines are checked, the BIT terminal sends a shutdown command through the bus to shut down the ith single machine. The value of i is increased by 1. If i≤M, return to step a) and proceed to the inspection process of the next single machine. If i>M, end.
进一步的,假设j的初值为1,对第i台单机的所有N台下位机进行检查的工作流程如下:Furthermore, assuming that the initial value of j is 1, the workflow for checking all N subordinate machines of the i-th single machine is as follows:
a)BIT终端通过总线发送第i台单机的第j台下位机的加电指令,等待该单机的下位机加电并启动运行;a) The BIT terminal sends a power-on command to the jth slave computer of the i-th stand-alone machine through the bus, waiting for the slave computer of the stand-alone machine to be powered on and start running;
b)第i台单机的第j台下位机的遥测信息由第i台单机采集并通过主总线传输给BIT终端;b) The telemetry information of the jth lower computer of the ith single machine is collected by the ith single machine and transmitted to the BIT terminal through the main bus;
c)BIT终端从遥测信息中获取第i台单机的第j台下位机的遥测包,解析出第i台单机的第j台下位机的加电状态,以及加电后的工作状态信息,并与预置的判读范围进行比较,如果在该判读范围,则进入步骤d);如果不在该判读范围,则判定第j台下位机工作状态异常,记录错误信息,进入步骤d);c) The BIT terminal obtains the telemetry package of the jth slave computer of the i-th single machine from the telemetry information, parses the power-on status of the jth slave computer of the i-th single machine, and the working status information after power-on, and compares it with the preset judgment range. If it is within the judgment range, it goes to step d); if it is not within the judgment range, it is determined that the working status of the jth slave computer is abnormal, records the error information, and goes to step d);
d)j值加1,若j≤N,则跳转到步骤a),进行下一台下位机的检查,若j>N则结束。d) Add 1 to the value of j. If j≤N, jump to step a) and check the next lower computer. If j>N, end.
本发明与现有技术相比的有益效果是:The beneficial effects of the present invention compared with the prior art are:
(1)BIT终端通过总线与卫星建立连接,通过LAN与地面BIT测试上位机相连,与传统外置式测试设备相比,可以大幅减少卫星地面测试过程中的测试电缆连接以及测试设备的体积;(1) The BIT terminal establishes a connection with the satellite through a bus and is connected to the ground BIT test host computer through a LAN. Compared with traditional external test equipment, it can greatly reduce the test cable connection and the volume of test equipment during the satellite ground test process;
(2)BIT终端可以放置于卫星星体内部,和外部连接只有一根网线和电源线,在一个测试阶段结束后,只需要断开网线和电源线即可,BIT终端和卫星的连接可以保留,在卫星地面测试场地转阶段期间BIT终端随卫星移动,可以减少电缆的重复插拔和地面测试设备转场与调试;(2) The BIT terminal can be placed inside the satellite body, and is connected to the outside world by only one network cable and one power cable. After a test phase, only the network cable and the power cable need to be disconnected, and the connection between the BIT terminal and the satellite can be retained. During the transition period of the satellite ground test site, the BIT terminal moves with the satellite, which can reduce the repeated plugging and unplugging of cables and the transfer and debugging of ground test equipment.
(3)BIT终端和卫星通过总线的数据交互方式,比传统测试方式通过测控通道速度快一个数量级以上,测试流程执行显著提高;(3) The data exchange between the BIT terminal and the satellite through the bus is more than an order of magnitude faster than the traditional test method through the measurement and control channel, which significantly improves the test process execution;
(4)通过BIT测试上位机给BIT终端注入卫星系统单机及其下位机自检测试用例,实现定制化的卫星自主检测。(4) Through the BIT test host computer, the BIT terminal is injected with the satellite system single machine and its lower machine self-test trial cases to achieve customized satellite autonomous detection.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
图1为一种基于星内自检装置的卫星快速自测试方法流程图;FIG1 is a flow chart of a satellite rapid self-test method based on an in-satellite self-test device;
图2为一种基于星内BIT终端的卫星快速自测试系统示意图。FIG2 is a schematic diagram of a satellite rapid self-test system based on an in-satellite BIT terminal.
具体实施方式Detailed ways
下面结合附图和具体实施例对本发明作进一步详细的描述:The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:
如图2所示,一种基于星内自检装置的卫星快速自测试系统,包括BIT终端、BIT测试上位机、总控服务器、遥测遥控地面设备和地面供电电源;BIT终端放置于卫星星体内部,通过LAN和BIT测试上位机连接,通过总线和卫星连接,接收到BIT测试上位机发送的卫星自检流程启动指令后,按照BIT测试上位机预先注入的测试用例对卫星系统单机及其下位机开展健康状态检查,将卫星健康状态检查结果通过LAN上传到BIT测试上位机;BIT终端支持的总线类型包括1553B、CAN和RS422等常见的卫星总线,适应不同卫星测试需求;BIT终端采用小型化设计,通过机械连接固定在卫星内部,在卫星地面测试场地转阶段期间随卫星移动,不用像传统地面测试设备一样需要断开卫星和外部连接的电缆才能够移动卫星。As shown in FIG2 , a satellite rapid self-test system based on an in-satellite self-test device includes a BIT terminal, a BIT test host computer, a master control server, telemetry and remote control ground equipment, and a ground power supply; the BIT terminal is placed inside the satellite body, connected to the BIT test host computer via LAN, and connected to the satellite via a bus. After receiving the satellite self-test process start instruction sent by the BIT test host computer, the health status check of the satellite system unit and its subordinate computers is carried out according to the test cases pre-injected by the BIT test host computer, and the satellite health status check results are uploaded to the BIT test host computer via LAN; the bus types supported by the BIT terminal include common satellite buses such as 1553B, CAN, and RS422, which can meet the testing requirements of different satellites; the BIT terminal adopts a miniaturized design, is fixed inside the satellite by mechanical connection, and moves with the satellite during the transition period of the satellite ground test site. Unlike traditional ground test equipment, it is not necessary to disconnect the satellite and the external connection cable to move the satellite.
BIT测试上位机和BIT终端、总控服务器、遥测遥控地面设备、地面供电电源通过LAN相连,运行BIT测试主控软件,向BIT终端下发测试用例和卫星自检流程启动指令,获取BIT终端上传的卫星健康状态检查结果;给地面供电电源发送自测试系统加电指令和卫星加电遥控指令;给遥测遥控地面设备发送卫星测控与星务系统加电和状态设置指令;总控服务器用于除BIT终端的自测试系统设备的网络控制;遥测遥控地面设备通过专用电缆和卫星上的测控与星务系统连接,根据BIT测试上位机发送的卫星测控与星务系统加电和状态设置指令对卫星上的测控与星务系统加电并进行状态设置,建立卫星和地面的遥控遥测通道;地面供电电源接收到BIT测试上位机发送的自测试系统加电指令和卫星加电遥控指令后,分别给自测试系统和卫星供电。The BIT test host computer is connected to the BIT terminal, the master control server, the telemetry and remote control ground equipment, and the ground power supply through LAN, runs the BIT test main control software, sends test cases and satellite self-test process start instructions to the BIT terminal, and obtains the satellite health status check results uploaded by the BIT terminal; sends the self-test system power-on instruction and the satellite power-on remote control instruction to the ground power supply; sends the satellite measurement and control and satellite service system power-on and status setting instructions to the telemetry and remote control ground equipment; the master control server is used for network control of the self-test system equipment except the BIT terminal; the telemetry and remote control ground equipment is connected to the measurement and control and satellite service system on the satellite through a dedicated cable, and according to the satellite measurement and control and satellite service system power-on and status setting instructions sent by the BIT test host computer, the measurement and control and satellite service system on the satellite is powered on and the status is set, and a remote control and telemetry channel between the satellite and the ground is established; after receiving the self-test system power-on instruction and the satellite power-on remote control instruction sent by the BIT test host computer, the ground power supply supplies power to the self-test system and the satellite respectively.
卫星上产品包括测控与星务系统、电源控制器、姿轨控计算机、执行机构、敏感器、载荷业务单元、平台业务单元、载荷和平台设备。卫星测控与星务系统完成与自测试系统地面设备的遥测遥控,以及星上数据管理和维护。卫星电源控制器用于卫星电能产生、存储与分配。姿轨控计算机用于卫星在轨期间的姿态以及轨道测量和控制。载荷业务单元用于卫星载荷设备的管理,包括指令发送和遥测采集,并建立载荷设备与测控与星务系统之间的接口。平台业务单元用于卫星载荷设备的管理,包括指令发送和遥测采集,并建立平台设备与数管计算机之间的接口。Products on the satellite include measurement, control and satellite service systems, power controllers, attitude and orbit control computers, actuators, sensors, payload business units, platform business units, payloads and platform equipment. The satellite measurement, control and satellite service system completes the telemetry and remote control of the ground equipment of the self-test system, as well as on-board data management and maintenance. The satellite power controller is used for satellite power generation, storage and distribution. The attitude and orbit control computer is used for attitude and orbit measurement and control of the satellite while in orbit. The payload business unit is used for the management of satellite payload equipment, including command sending and telemetry collection, and establishes an interface between the payload equipment and the measurement, control and satellite service system. The platform business unit is used for the management of satellite payload equipment, including command sending and telemetry collection, and establishes an interface between the platform equipment and the digital control computer.
如图1所示,一种基于星内自检装置卫星快速自测试方法的详细步骤描述如下:As shown in FIG1 , the detailed steps of a satellite rapid self-test method based on an in-satellite self-test device are described as follows:
1、自测试系统的连接1. Connection of self-test system
在测试前完成自测试系统和卫星系统的连接,其中自测试系统中的BIT测试上位机、总控服务器,以及地面供电电源采用LAN进行连接,地面供电电源与卫星间通过专用的地面测试电缆进行连接,遥测遥控地面设备通过专用电缆和卫星测控与星务系统连接;BIT终端和地面BIT测试上位机通过供电电缆和LAN相连;卫星上的产品通过星上电缆网连接,BIT终端通过卫星预留的总线检测口接入卫星总线。Before the test, the connection between the self-test system and the satellite system is completed. The BIT test host computer, the master control server, and the ground power supply in the self-test system are connected by LAN. The ground power supply and the satellite are connected by a dedicated ground test cable. The telemetry and remote control ground equipment are connected to the satellite control and satellite service system through a dedicated cable; the BIT terminal and the ground BIT test host computer are connected to the LAN through the power supply cable; the products on the satellite are connected through the onboard cable network, and the BIT terminal is connected to the satellite bus through the bus detection port reserved on the satellite.
2、地面测试设备状态设置2. Ground test equipment status setting
打开地面供电电源总开关、总控服务器和BIT测试上位机的电源,以及BIT终端的电源,对BIT测试上位机运行的软件进行相应的设置,确保自测试系统设备正常工作;根据测试任务需求,利用BIT测试上位机通过LAN给BIT终端注入测试用例,上述测试用例根据卫星星上产品状态、连接关系,以及测试内容等在地面制定,包括星上单机的测试顺序、测试发送的指令,以及预期遥测结果判读范围等。Turn on the main power switch on the ground, the power of the master control server and the BIT test host computer, as well as the power of the BIT terminal, and make corresponding settings for the software running on the BIT test host computer to ensure the normal operation of the self-test system equipment; according to the test task requirements, use the BIT test host computer to inject test cases into the BIT terminal through LAN. The above test cases are formulated on the ground based on the product status, connection relationship, and test content on the satellite, including the test sequence of the single machine on the satellite, the instructions sent by the test, and the expected interpretation range of the telemetry results.
3、卫星初始状态设置3. Satellite initial status setting
BIT测试上位机给地面供电电源发送自测试系统加电指令,完成自测试系统供电;给地面供电电源发送卫星加电遥控指令,通过控制卫星电源控制器完成卫星供电;给遥测遥控地面设备发送卫星测控与星务系统加电和状态设置指令,并进行状态设置,建立卫星和地面的遥控遥测通道;通过BIT终端向卫星发送测试指令,如果能接收到卫星的遥测信息并解析,则自测试系统和卫星的遥控遥测通道工作情况正常;BIT测试上位机向BIT终端发送卫星自检流程启动指令。The BIT test host computer sends a self-test system power-on command to the ground power supply to complete the power supply of the self-test system; sends a satellite power-on remote control command to the ground power supply to complete the satellite power supply by controlling the satellite power controller; sends satellite measurement and control and satellite service system power-on and status setting commands to the telemetry and remote control ground equipment, and performs status setting to establish a remote control and telemetry channel between the satellite and the ground; sends a test command to the satellite through the BIT terminal. If the satellite's telemetry information can be received and analyzed, the self-test system and the satellite's remote control and telemetry channel are working normally; the BIT test host computer sends a satellite self-test process start command to the BIT terminal.
4、启动自检流程4. Start the self-check process
BIT终端在接收到BIT测试上位机发送的自检启动指令后,按照预先注入的测试用例进行卫星健康状态自检,单机健康状态检查包括该单机的加断电状态、关键特征参数以及总线通信功能,单机的下位机健康状态检查包括该下位机加电状态以及单机工作的重要参数信息;After receiving the self-test start command sent by the BIT test host computer, the BIT terminal performs a satellite health status self-test according to the pre-injected test cases. The health status check of a single machine includes the power-on and power-off status, key characteristic parameters and bus communication function of the single machine. The health status check of the lower machine of the single machine includes the power-on status of the lower machine and important parameter information of the single machine's work;
卫星健康状态自测试按照预设步骤进行,每一个步骤有对应的指令发送和对应的遥测判读,需要覆盖星上所有可测单机及下位机。假设挂载于卫星系统主总线上单机有M台,其中第i台单机有N台下位机,i的初值为1,对卫星系统单机的健康状态检查工作流程如下:The satellite health status self-test is performed according to the preset steps. Each step has a corresponding command to send and a corresponding telemetry interpretation, which needs to cover all testable units and slave computers on the satellite. Assuming that there are M units mounted on the satellite system main bus, the i-th unit has N slave computers, and the initial value of i is 1, the health status check workflow for the satellite system unit is as follows:
a)BIT终端给第i台单机发送加电指令;a) The BIT terminal sends a power-on command to the i-th single machine;
b)BIT终端等待该单机加电并启动运行,单机上电时默认工作于主总线;b) The BIT terminal waits for the stand-alone machine to be powered on and start running. When the stand-alone machine is powered on, it works on the main bus by default;
c)BIT终端通过主总线获取第i台单机的遥测包,并解析其电源电压以及相关的遥测信息;c) The BIT terminal obtains the telemetry packet of the i-th single machine through the main bus and analyzes its power supply voltage and related telemetry information;
d)BIT终端根据预先写入的第i台单机遥测信息的判读范围对获取的第i台单机的遥测信息进行判读,如果第i台单机的遥测信息不在该判读范围,则判定第i台单机工作状态异常,记录错误信息,BIT终端通过总线发送关闭指令,关闭第i台单机,i值加1,若i≤M,返回到步骤a),进行下一台单机的检查流程,若i>M则结束;如果第i台单机的遥测信息在该判读范围,则进入步骤e);d) The BIT terminal reads the telemetry information of the i-th single machine according to the pre-written reading range of the telemetry information of the i-th single machine. If the telemetry information of the i-th single machine is not within the reading range, it is determined that the working state of the i-th single machine is abnormal, and the error information is recorded. The BIT terminal sends a shutdown command through the bus to shut down the i-th single machine, and the value of i is increased by 1. If i≤M, return to step a) and perform the inspection process of the next single machine. If i>M, end; if the telemetry information of the i-th single machine is within the reading range, enter step e);
e)BIT终端通过总线发送指令,将第i台单机从主总线切换为备总线;BIT终端通过备总线获取第i台单机的遥测包信息,如果该单机的遥测包信息均能够通过备总线获取,则表明第i台单机的备总线工作正常,BIT终端发送指令将第i台单机切换到主总线,进入步骤f);如果BIT终端无法从备总线获取第i台单机的遥测包信息,则表明第i台单机的备总线存在故障,BIT终端记录错误信息,BIT终端通过总线发送关闭指令,关闭第i台单机,i值加1,若i≤M,返回到步骤a),进行下一台单机的检查流程,若i>M则结束;e) The BIT terminal sends a command through the bus to switch the i-th single machine from the main bus to the standby bus; the BIT terminal obtains the telemetry package information of the i-th single machine through the standby bus. If the telemetry package information of the single machine can be obtained through the standby bus, it indicates that the standby bus of the i-th single machine is working normally. The BIT terminal sends a command to switch the i-th single machine to the main bus and enters step f); if the BIT terminal cannot obtain the telemetry package information of the i-th single machine from the standby bus, it indicates that the standby bus of the i-th single machine has a fault. The BIT terminal records the error information. The BIT terminal sends a shutdown command through the bus to shut down the i-th single machine. The value of i is increased by 1. If i≤M, return to step a) and perform the inspection process of the next single machine. If i>M, end;
f)对第i台单机的所有N台下位机依次进行检查,并记录检查结果,当N台下位机全部检查完毕后,BIT终端通过总线发送关闭指令,关闭第i台单机,i值加1,若i≤M,返回到步骤a),进行下一台单机的检查流程,若i>M则结束。f) Check all N lower machines of the ith single machine in turn and record the inspection results. When all N lower machines are checked, the BIT terminal sends a shutdown command through the bus to shut down the ith single machine. The value of i is increased by 1. If i≤M, return to step a) and proceed to the inspection process of the next single machine. If i>M, end.
其中假设j的初值为1,对第i台单机的所有N台下位机进行检查的工作流程如下:Assuming that the initial value of j is 1, the workflow for checking all N lower machines of the i-th single machine is as follows:
a)BIT终端通过总线发送第i台单机的第j台下位机的加电指令,等待该单机的下位机加电并启动运行;a) The BIT terminal sends a power-on command to the jth slave computer of the i-th stand-alone machine through the bus, waiting for the slave computer of the stand-alone machine to be powered on and start running;
b)第i台单机的第j台下位机的遥测信息由第i台单机采集并通过主总线传输给BIT终端;b) The telemetry information of the jth lower computer of the ith single machine is collected by the ith single machine and transmitted to the BIT terminal through the main bus;
c)BIT终端从遥测信息中获取第i台单机的第j台下位机的遥测包,解析出第i台单机的第j台下位机的加电状态,以及加电后的工作状态信息,并与预置的判读范围进行比较,如果在该判读范围,则进入步骤d);如果不在该判读范围,则判定第j台下位机工作状态异常,记录错误信息,进入步骤d);c) The BIT terminal obtains the telemetry package of the jth slave computer of the i-th single machine from the telemetry information, parses the power-on status of the jth slave computer of the i-th single machine, and the working status information after power-on, and compares it with the preset judgment range. If it is within the judgment range, it goes to step d); if it is not within the judgment range, it is determined that the working status of the jth slave computer is abnormal, records the error information, and goes to step d);
d)j值加1,若j≤N,则跳转到步骤a),进行下一台下位机的检查,若j>N则结束。d) Add 1 to the value of j. If j≤N, jump to step a) and check the next lower computer. If j>N, end.
5、测试结果汇总5. Test results summary
BIT终端以预定的协议,通过LAN将卫星所有单机的健康检查状态发送到地面的BIT测试上位机;BIT测试上位机针对单机的健康检查结果生成报表,并弹出提示框,供用户浏览,并将结果存入数据库,结果上报和报表生成均为自动化实施;The BIT terminal sends the health check status of all satellite units to the BIT test host computer on the ground through the LAN using a predetermined protocol. The BIT test host computer generates a report based on the health check results of the units, pops up a prompt box for users to browse, and stores the results in the database. The result reporting and report generation are all automated.
BIT终端在进行快速自测试时还将卫星总线的原始数据上传到BIT测试上位机,由BIT测试上位机进行原始总线记录的数据库存储操作,可作为故障分析排查的依据,供事后进行详细排查分析。When performing a quick self-test, the BIT terminal also uploads the original data of the satellite bus to the BIT test host computer, which performs database storage operations on the original bus records, which can be used as a basis for fault analysis and troubleshooting, and for detailed troubleshooting and analysis afterwards.
6、卫星和地面设备状态恢复6. Satellite and ground equipment status recovery
在BIT测试上位机上,先后发送测控与星务系统以及电源控制器的断电指令,恢复卫星的状态;待卫星断电后,完成地面测试设备的断电。On the BIT test host computer, power-off commands are sent to the measurement and control system, satellite service system and power controller in turn to restore the satellite's status; after the satellite is powered off, the ground test equipment is powered off.
下面结合具体实施例进行进一步说明:The following is further described in conjunction with specific embodiments:
实施例:Example:
1、自测试系统与卫星连接,自测试系统加电,设置BIT终端的状态,使其处于待机状态;1. The self-test system is connected to the satellite, the self-test system is powered on, and the state of the BIT terminal is set to be in standby state;
2、编写测试用例,涵盖卫星总线上的5台单机,每台单机总线主备份总线分别为A总线和B总线;通过LAN将测试用例从BIT测试上位机下载到BIT终端;2. Write test cases, covering the 5 stand-alone machines on the satellite bus. The main and backup buses of each stand-alone bus are A bus and B bus respectively; download the test cases from the BIT test host computer to the BIT terminal via LAN;
3、地面供电电源电压100V,供电电流10A,并完成自身状态设置;通过遥控指令给卫星加电,完成电源控制器、测控与星务系统加电,并确认通过遥测遥控地面设备可获取卫星的遥测信息;3. The ground power supply voltage is 100V, the power supply current is 10A, and the self-status setting is completed; the satellite is powered on through remote control commands, the power controller, measurement and control, and satellite service systems are powered on, and it is confirmed that the satellite's telemetry information can be obtained through telemetry remote control of the ground equipment;
4、BIT终端发送00120号指令,将姿轨控计算机电源打开,等待3s,姿轨控计算机上电完成,软件运行完成,此时姿轨控默认工作为A总线;4. The BIT terminal sends command 00120 to turn on the power of the attitude and track control computer. After waiting for 3 seconds, the attitude and track control computer is powered on and the software is running. At this time, the attitude and track control defaults to working as A bus;
5、BIT终端通过主总线获取星上所有遥测包,并从中获取姿轨控计算自身的工作状态信息包PK61,从PK61中获取+5V电源电压信息ZK2100,并解码出ZK2100的物理量为4.89V。BIT终端将4.89V与预先下载的ZK2100加电判读范围4.5V~5.5V进行比较,确认姿轨控计算机加电状态正常;5. The BIT terminal obtains all telemetry packets on the satellite through the main bus, and obtains the attitude and orbit control computer's own working status information package PK61 from it, obtains the +5V power supply voltage information ZK2100 from PK61, and decodes the physical quantity of ZK2100 as 4.89V. The BIT terminal compares 4.89V with the pre-downloaded ZK2100 power-on judgment range of 4.5V to 5.5V to confirm that the attitude and orbit control computer is powered on normally;
6、BIT终端发送总线指令56012,将姿轨控计算机的总线切换为B总线,并从B总线上获取遥测,从中过滤出PK61包,从PK61包中获取总线工作状态信息ZK3010,确认总线当班状态为B总线;以上信息均正确后,BIT终端发送指令,将总线切换为A总线;6. The BIT terminal sends bus instruction 56012 to switch the bus of the attitude and orbit control computer to the B bus, obtain telemetry from the B bus, filter out the PK61 package, obtain the bus working status information ZK3010 from the PK61 package, and confirm that the bus duty status is the B bus; after the above information is correct, the BIT terminal sends a command to switch the bus to the A bus;
7、姿轨控下位机中包含敏感器和执行机构,其中敏感器有陀螺和星敏感器等;BIT终端通过姿轨控计算机给陀螺线路盒发送指令,依次打开4个陀螺,通过总线获取四个陀螺的加电状态全为1,表明通电正常;通过总线获取4个陀螺的稳态工作电流为0.14A、0.13A、0.02A和0.12A;7. The attitude and orbit control lower computer contains sensors and actuators, among which the sensors include gyroscopes and star sensors. The BIT terminal sends instructions to the gyroscope circuit box through the attitude and orbit control computer, turning on the four gyroscopes in turn. The power-on status of the four gyroscopes obtained through the bus is all 1, indicating that the power is normal. The steady-state working current of the four gyroscopes obtained through the bus is 0.14A, 0.13A, 0.02A and 0.12A.
8、BIT终端将以上电流与预先下载的测试用例进行比对,陀螺1、2、4的电流均在0.1A~0.15A正常范围内,陀螺3电流超出判读范围,判定陀螺3工作异常;BIT终端将工作异常信息记录在本地,并继续对姿轨控其它下位机开展检查;8. The BIT terminal compares the above currents with the pre-downloaded test cases. The currents of gyroscopes 1, 2, and 4 are all within the normal range of 0.1A to 0.15A. The current of gyroscope 3 exceeds the judgment range, and it is determined that gyroscope 3 is working abnormally. The BIT terminal records the abnormal working information locally and continues to check other lower computers of attitude and orbit control.
9、重复上述过程,完成载荷业务单元、平台业务单元等单机和下位机的健康状态检查,对检查异常项进行记录;9. Repeat the above process to complete the health status check of the load business unit, platform business unit and other single machines and lower machines, and record the abnormal items in the check;
10、BIT终端完成所有的单机及下位机自测试流程,并将测试结果通过LAN反馈到BIT测试上位机中,BIT测试上位机弹出测试异常信息“陀螺3稳态电流超标”,并转由人工处理;10. The BIT terminal completes all the self-test processes of the single machine and the lower machine, and feeds back the test results to the BIT test host computer through LAN. The BIT test host computer pops up the test abnormality information "Gyro 3 steady-state current exceeds the standard" and transfers it to manual processing;
11、人工确认结果后,BIT测试上位机自动实施卫星和地面断电流程,完成卫星快速自测试全过程。11. After the results are manually confirmed, the BIT test host computer automatically implements the satellite and ground power-off process to complete the entire satellite rapid self-test process.
本发明提出一种基于星内自检装置的卫星快速自测试系统及方法,该系统包括BIT终端、BIT测试上位机、总控服务器、遥测遥控地面设备、地面供电电源;BIT终端放置于卫星星体内部,和BIT测试上位机通过LAN相连,接收到BIT测试上位机发送的卫星自检流程启动指令后,按照BIT测试上位机预先注入的测试用例对卫星系统单机及其下位机开展健康状态检查,将检查结果通过LAN上传到BIT测试上位机。本发明代替传统的主要依靠外部地面测试设备的方式,与传统外置式测试设备相比,体积大幅减小、操作简易方便、执行速度更快,并能实现卫星健康状态自检测。The present invention proposes a satellite rapid self-test system and method based on an in-satellite self-test device, the system comprising a BIT terminal, a BIT test host computer, a master control server, telemetry and remote control ground equipment, and a ground power supply; the BIT terminal is placed inside the satellite body, and is connected to the BIT test host computer via a LAN. After receiving a satellite self-test process start instruction sent by the BIT test host computer, the health status of the satellite system unit and its subordinate computers are checked according to the test cases pre-injected by the BIT test host computer, and the inspection results are uploaded to the BIT test host computer via a LAN. The present invention replaces the traditional method of mainly relying on external ground test equipment. Compared with traditional external test equipment, the volume is greatly reduced, the operation is simple and convenient, the execution speed is faster, and the satellite health status self-check can be realized.
本发明说明书中未作详细描述的内容属本领域专业技术人员的公知技术。The contents not described in detail in the specification of the present invention belong to the well-known technologies of professionals in the field.
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