該(gai)設(she)計(ji)屬(shu)于計(ji)算機軟件-系統應用軟件領域(yu)，涉及一種機載端航電總線狀態(tai)交(jiao)換協議(yi)處理方法(fa)。

背景技術：

隨著民用(yong)(yong)(yong)航(hang)(hang)(hang)空(kong)電(dian)子(zi)系統的(de)(de)(de)(de)(de)(de)(de)發(fa)(fa)展，飛(fei)機(ji)內(nei)部(bu)(bu)的(de)(de)(de)(de)(de)(de)(de)航(hang)(hang)(hang)電(dian)總(zong)線(xian)種類越來(lai)越多，機(ji)載(zai)航(hang)(hang)(hang)電(dian)數據信(xin)息(xi)管(guan)(guan)理系統負責對航(hang)(hang)(hang)電(dian)總(zong)線(xian)上數據進行實時地采(cai)集，并且(qie)將(jiang)采(cai)集的(de)(de)(de)(de)(de)(de)(de)數據通(tong)過某種方式發(fa)(fa)送給外部(bu)(bu)應用(yong)(yong)(yong)。當外部(bu)(bu)應用(yong)(yong)(yong)接收不(bu)到(dao)航(hang)(hang)(hang)電(dian)數據信(xin)息(xi)管(guan)(guan)理系統發(fa)(fa)送的(de)(de)(de)(de)(de)(de)(de)數據時，需要某種遠(yuan)程(cheng)方式能夠獲得總(zong)線(xian)上的(de)(de)(de)(de)(de)(de)(de)歷史信(xin)息(xi)，根據歷史信(xin)息(xi)來(lai)分析總(zong)線(xian)的(de)(de)(de)(de)(de)(de)(de)歷史狀(zhuang)態和當前所處的(de)(de)(de)(de)(de)(de)(de)狀(zhuang)態。如(ru)何遠(yuan)程(cheng)獲取機(ji)載(zai)航(hang)(hang)(hang)電(dian)總(zong)線(xian)的(de)(de)(de)(de)(de)(de)(de)歷史信(xin)息(xi)，這就(jiu)需要用(yong)(yong)(yong)戶自定義一套輕量(liang)級(ji)的(de)(de)(de)(de)(de)(de)(de)遠(yuan)程(cheng)獲取機(ji)載(zai)航(hang)(hang)(hang)電(dian)總(zong)線(xian)管(guan)(guan)理信(xin)息(xi)的(de)(de)(de)(de)(de)(de)(de)協議(yi)，輕量(liang)級(ji)的(de)(de)(de)(de)(de)(de)(de)機(ji)載(zai)航(hang)(hang)(hang)電(dian)總(zong)線(xian)管(guan)(guan)理信(xin)息(xi)協議(yi)占用(yong)(yong)(yong)的(de)(de)(de)(de)(de)(de)(de)機(ji)載(zai)設備資(zi)源少，并且(qie)交互(hu)方式簡單易行，利于在機(ji)載(zai)設備上實現，并且(qie)能夠達到(dao)很好(hao)的(de)(de)(de)(de)(de)(de)(de)使(shi)用(yong)(yong)(yong)效果。

技術實現要素：

本發明的目的：

本發明提供一種機(ji)載(zai)端(duan)航(hang)(hang)電總線(xian)(xian)(xian)狀態交換協議處(chu)理(li)方法，能夠(gou)在機(ji)載(zai)設備上開發機(ji)載(zai)航(hang)(hang)電總線(xian)(xian)(xian)管(guan)理(li)的服務，進(jin)而對航(hang)(hang)電總線(xian)(xian)(xian)狀態信(xin)息進(jin)行實(shi)時(shi)監控和管(guan)理(li)，從而給遠程(cheng)的外部(bu)應(ying)用獲取(qu)機(ji)載(zai)端(duan)航(hang)(hang)電總線(xian)(xian)(xian)狀態信(xin)息提供了(le)便利(li)，便于(yu)外部(bu)管(guan)理(li)人員實(shi)時(shi)了(le)解(jie)機(ji)載(zai)設備的航(hang)(hang)電總線(xian)(xian)(xian)的狀態，便于(yu)發現航(hang)(hang)電總線(xian)(xian)(xian)的故障信(xin)息，從而利(li)于(yu)對航(hang)(hang)電設備的維護和維修。

本發明的技術方案：

一(yi)種機載端航電總線狀態交換協議處理方(fang)法(fa)，包括(kuo)：

步(bu)驟(zou)1、等待接收外(wai)部應用(yong)請(qing)(qing)求消息(xi)；如果接收到外(wai)部應用(yong)請(qing)(qing)求消息(xi)，解析所(suo)述請(qing)(qing)求消息(xi)；

步驟(zou)2、如果解析得到(dao)所述請求(qiu)消息(xi)為(wei)訪(fang)問命(ming)令A消息(xi)，根據訪(fang)問命(ming)令A消息(xi)中(zhong)(zhong)總(zong)線類(lei)型和總(zong)線ID請求(qiu)的總(zong)線狀態信(xin)息(xi)，獲取機(ji)載端航(hang)電總(zong)線管理(li)信(xin)息(xi)庫(ku)中(zhong)(zhong)對應(ying)的總(zong)線類(lei)型和總(zong)線ID上的總(zong)線狀態信(xin)息(xi)；

步(bu)驟3、組裝訪問命(ming)令A的響(xiang)應(ying)消息并發送給外部應(ying)用，返回(hui)步(bu)驟1；

步驟(zou)4、如果解析得(de)到所(suo)述請求消息為訪問(wen)命令(ling)R消息，根據(ju)訪問(wen)命令(ling)R消息中總(zong)線(xian)(xian)類型(xing)(xing)和(he)總(zong)線(xian)(xian)ID請求的(de)總(zong)線(xian)(xian)狀態(tai)信(xin)息，獲(huo)取(qu)機(ji)載(zai)端航電(dian)總(zong)線(xian)(xian)管理信(xin)息庫中對(dui)應的(de)總(zong)線(xian)(xian)類型(xing)(xing)和(he)總(zong)線(xian)(xian)ID上的(de)總(zong)線(xian)(xian)狀態(tai)信(xin)息；

步驟(zou)(zou)5、組裝訪問命令(ling)R的響應(ying)消息并發送給外部應(ying)用，返回步驟(zou)(zou)1；

步(bu)驟6、如果解析得到所(suo)述(shu)請求消(xiao)息(xi)為訪問命令(ling)S消(xiao)息(xi)，根據訪問命令(ling)S消(xiao)息(xi)中總(zong)線(xian)(xian)(xian)(xian)類型和(he)總(zong)線(xian)(xian)(xian)(xian)ID請求的(de)總(zong)線(xian)(xian)(xian)(xian)狀態(tai)信(xin)息(xi)，獲取機載端航電總(zong)線(xian)(xian)(xian)(xian)管理信(xin)息(xi)庫中對應的(de)總(zong)線(xian)(xian)(xian)(xian)類型和(he)總(zong)線(xian)(xian)(xian)(xian)ID上的(de)總(zong)線(xian)(xian)(xian)(xian)狀態(tai)信(xin)息(xi)；

步驟(zou)7、組裝訪問命令(ling)S的響應消(xiao)息并發送給外部應用，返(fan)回步驟(zou)1；

航(hang)電總(zong)線(xian)管理(li)信息庫(ku)中機載(zai)端航(hang)電總(zong)線(xian)管理(li)信息模型(xing)為：

(1)機(ji)載端航(hang)電總線管理信(xin)息模型(xing)采(cai)用樹形結構，模型(xing)采(cai)用四層(ceng)樹，根節點是(shi)(shi)(shi)管理信(xin)息庫，一層(ceng)是(shi)(shi)(shi)總線類型(xing)節點，二層(ceng)是(shi)(shi)(shi)總線號節點，三層(ceng)是(shi)(shi)(shi)記錄的航(hang)電總線狀態信(xin)息；

(2)航電總線管理(li)信息模型的(de)狀態信息中包含如下關系：

當正常接收情況：

a.接(jie)(jie)收(shou)總(zong)(zong)線數(shu)(shu)(shu)據(ju)總(zong)(zong)字節(jie)數(shu)(shu)(shu)次數(shu)(shu)(shu)*4294967296+接(jie)(jie)收(shou)總(zong)(zong)線數(shu)(shu)(shu)據(ju)總(zong)(zong)字節(jie)數(shu)(shu)(shu)＝(接(jie)(jie)收(shou)數(shu)(shu)(shu)據(ju)成功總(zong)(zong)字節(jie)數(shu)(shu)(shu)次數(shu)(shu)(shu)*4294967296+接(jie)(jie)收(shou)總(zong)(zong)線數(shu)(shu)(shu)據(ju)成功總(zong)(zong)字節(jie)數(shu)(shu)(shu))+(接(jie)(jie)收(shou)數(shu)(shu)(shu)據(ju)失(shi)敗(bai)總(zong)(zong)字節(jie)數(shu)(shu)(shu)次數(shu)(shu)(shu)*4294967296+接(jie)(jie)收(shou)總(zong)(zong)線數(shu)(shu)(shu)據(ju)失(shi)敗(bai)總(zong)(zong)字節(jie)數(shu)(shu)(shu))；

b.當接收(shou)總線數據總字節(jie)數等于4294967296時，接收(shou)總線數據總字節(jie)數次數加1；

c.當接收總線數(shu)(shu)(shu)據成功(gong)總字節數(shu)(shu)(shu)等于4294967296，接收數(shu)(shu)(shu)據成功(gong)總字節數(shu)(shu)(shu)次數(shu)(shu)(shu)加1；

d.每(mei)當接(jie)收(shou)(shou)(shou)(shou)(shou)一(yi)次(ci)(ci)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)，數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)通過完整性校驗，則接(jie)收(shou)(shou)(shou)(shou)(shou)總(zong)線(xian)(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)成功(gong)(gong)總(zong)字節數(shu)(shu)(shu)(shu)(shu)更新(xin)為(wei)原來的(de)值(zhi)加(jia)上本次(ci)(ci)接(jie)收(shou)(shou)(shou)(shou)(shou)的(de)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)的(de)字節數(shu)(shu)(shu)(shu)(shu)，接(jie)收(shou)(shou)(shou)(shou)(shou)總(zong)線(xian)(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)總(zong)字節數(shu)(shu)(shu)(shu)(shu)更新(xin)為(wei)原來的(de)值(zhi)加(jia)上本次(ci)(ci)接(jie)收(shou)(shou)(shou)(shou)(shou)的(de)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)的(de)字節數(shu)(shu)(shu)(shu)(shu)，接(jie)收(shou)(shou)(shou)(shou)(shou)成功(gong)(gong)次(ci)(ci)數(shu)(shu)(shu)(shu)(shu)加(jia)1，最近一(yi)次(ci)(ci)接(jie)收(shou)(shou)(shou)(shou)(shou)總(zong)線(xian)(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)成功(gong)(gong)時間更新(xin)為(wei)接(jie)收(shou)(shou)(shou)(shou)(shou)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)時時間；當接(jie)收(shou)(shou)(shou)(shou)(shou)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)是第(di)一(yi)個數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)包時，記(ji)錄第(di)一(yi)次(ci)(ci)接(jie)收(shou)(shou)(shou)(shou)(shou)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)時間；

e.當接收總線數(shu)據失(shi)敗(bai)總字節數(shu)等于(yu)4294967296，接收數(shu)據失(shi)敗(bai)總字節數(shu)次數(shu)加1；

f.每當(dang)接(jie)(jie)收(shou)(shou)(shou)一(yi)次(ci)數據(ju)(ju)(ju)，數據(ju)(ju)(ju)未能(neng)通(tong)過(guo)完整性(xing)校驗(yan)，則接(jie)(jie)收(shou)(shou)(shou)總(zong)線(xian)數據(ju)(ju)(ju)失敗總(zong)字(zi)節數更新(xin)為原來的(de)值(zhi)加上本次(ci)接(jie)(jie)收(shou)(shou)(shou)的(de)數據(ju)(ju)(ju)的(de)字(zi)節數，接(jie)(jie)收(shou)(shou)(shou)總(zong)線(xian)數據(ju)(ju)(ju)總(zong)字(zi)節數更新(xin)為原來的(de)值(zhi)加上本次(ci)接(jie)(jie)收(shou)(shou)(shou)的(de)數據(ju)(ju)(ju)的(de)字(zi)節數，接(jie)(jie)收(shou)(shou)(shou)失敗次(ci)數加1，最(zui)近一(yi)次(ci)接(jie)(jie)收(shou)(shou)(shou)總(zong)線(xian)數據(ju)(ju)(ju)失敗時間更新(xin)為接(jie)(jie)收(shou)(shou)(shou)數據(ju)(ju)(ju)時時間；當(dang)接(jie)(jie)收(shou)(shou)(shou)數據(ju)(ju)(ju)是第一(yi)個數據(ju)(ju)(ju)包時，記錄(lu)第一(yi)次(ci)接(jie)(jie)收(shou)(shou)(shou)數據(ju)(ju)(ju)時間；

g.當接收(shou)(shou)(shou)失(shi)敗次數達到(dao)設定的閾(yu)值后，接收(shou)(shou)(shou)總(zong)線(xian)狀態(tai)設置為失(shi)效狀態(tai)，否則接收(shou)(shou)(shou)總(zong)線(xian)狀態(tai)設置為正常工作狀態(tai)；

當正常發送情況：

a.發(fa)送(song)總(zong)(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)總(zong)(zong)(zong)(zong)字(zi)(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)(shu)*4294967296+發(fa)送(song)總(zong)(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)總(zong)(zong)(zong)(zong)字(zi)(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)＝(發(fa)送(song)數(shu)(shu)(shu)(shu)據(ju)成功總(zong)(zong)(zong)(zong)字(zi)(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)(shu)*4294967296+發(fa)送(song)總(zong)(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)成功總(zong)(zong)(zong)(zong)字(zi)(zi)(zi)節(jie)數(shu)(shu)(shu)(shu))+(發(fa)送(song)數(shu)(shu)(shu)(shu)據(ju)失敗總(zong)(zong)(zong)(zong)字(zi)(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)(shu)*4294967296+發(fa)送(song)總(zong)(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)失敗總(zong)(zong)(zong)(zong)字(zi)(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)(shu))；

b.當發(fa)送總線(xian)數(shu)據總字節(jie)數(shu)等(deng)于(yu)4294967296時，發(fa)送總線(xian)數(shu)據總字節(jie)數(shu)次數(shu)加1；

c.當發送總線數(shu)據(ju)成(cheng)(cheng)功(gong)總字節(jie)數(shu)等于4294967296時(shi)，發送數(shu)據(ju)成(cheng)(cheng)功(gong)總字節(jie)數(shu)次數(shu)加1；

d.每當發(fa)(fa)送(song)(song)一(yi)次數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)，數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)發(fa)(fa)送(song)(song)成功，則發(fa)(fa)送(song)(song)總(zong)線(xian)(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)成功總(zong)字(zi)(zi)節(jie)(jie)數(shu)(shu)(shu)(shu)(shu)更(geng)新為(wei)原來的(de)(de)值加上(shang)本次發(fa)(fa)送(song)(song)的(de)(de)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)的(de)(de)字(zi)(zi)節(jie)(jie)數(shu)(shu)(shu)(shu)(shu)，發(fa)(fa)送(song)(song)總(zong)線(xian)(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)總(zong)字(zi)(zi)節(jie)(jie)數(shu)(shu)(shu)(shu)(shu)更(geng)新為(wei)原來的(de)(de)值加上(shang)本次發(fa)(fa)送(song)(song)的(de)(de)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)的(de)(de)字(zi)(zi)節(jie)(jie)數(shu)(shu)(shu)(shu)(shu)，發(fa)(fa)送(song)(song)成功次數(shu)(shu)(shu)(shu)(shu)加1，最近一(yi)次發(fa)(fa)送(song)(song)總(zong)線(xian)(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)成功時(shi)間(jian)更(geng)新為(wei)發(fa)(fa)送(song)(song)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)時(shi)時(shi)間(jian)；當發(fa)(fa)送(song)(song)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)是第一(yi)個數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)包時(shi)，記錄第一(yi)次發(fa)(fa)送(song)(song)數(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)時(shi)間(jian)；

e.當發(fa)(fa)送(song)總(zong)(zong)線數(shu)據(ju)失敗總(zong)(zong)字節數(shu)等(deng)于4294967296，發(fa)(fa)送(song)數(shu)據(ju)失敗總(zong)(zong)字節數(shu)次數(shu)加1；

f.每當(dang)發送(song)(song)一次(ci)(ci)(ci)數(shu)(shu)(shu)(shu)(shu)據(ju)，數(shu)(shu)(shu)(shu)(shu)據(ju)發送(song)(song)失敗，則發送(song)(song)總(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)失敗總(zong)(zong)(zong)字(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)更新為(wei)原來(lai)(lai)的(de)值加上(shang)本次(ci)(ci)(ci)發送(song)(song)的(de)數(shu)(shu)(shu)(shu)(shu)據(ju)的(de)字(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)，發送(song)(song)總(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)總(zong)(zong)(zong)字(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)更新為(wei)原來(lai)(lai)的(de)值加上(shang)本次(ci)(ci)(ci)發送(song)(song)的(de)數(shu)(shu)(shu)(shu)(shu)據(ju)的(de)字(zi)(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)，發送(song)(song)失敗次(ci)(ci)(ci)數(shu)(shu)(shu)(shu)(shu)加1，最近一次(ci)(ci)(ci)發送(song)(song)總(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)(shu)據(ju)失敗時(shi)間(jian)更新為(wei)發送(song)(song)數(shu)(shu)(shu)(shu)(shu)據(ju)時(shi)時(shi)間(jian)；當(dang)發送(song)(song)數(shu)(shu)(shu)(shu)(shu)據(ju)是第一個(ge)數(shu)(shu)(shu)(shu)(shu)據(ju)包時(shi)，記(ji)錄第一次(ci)(ci)(ci)發送(song)(song)數(shu)(shu)(shu)(shu)(shu)據(ju)時(shi)間(jian)；

g.當發送(song)失敗次數達(da)到設(she)置(zhi)的閾(yu)值后，發送(song)總(zong)線狀態(tai)(tai)設(she)置(zhi)為失效狀態(tai)(tai)，否則閾(yu)值內，發送(song)總(zong)線狀態(tai)(tai)設(she)置(zhi)為正(zheng)常(chang)工作狀態(tai)(tai)。

訪問命令A、R、S消息中總(zong)(zong)(zong)線(xian)類型和總(zong)(zong)(zong)線(xian)ID請求的總(zong)(zong)(zong)線(xian)狀態信息時，機載航電總(zong)(zong)(zong)線(xian)信息管理協(xie)議交(jiao)互(hu)流程包括：

一、訪問(wen)命(ming)令A交互(hu)過程：應(ying)用向機(ji)載(zai)端發送(song)訪問(wen)命(ming)令A的請求消(xiao)(xiao)息，機(ji)載(zai)端收(shou)到請求消(xiao)(xiao)息后進行(xing)處理(li)，當請求消(xiao)(xiao)息內容(rong)(rong)完全(quan)正確，回復包(bao)含數(shu)據字段(duan)的響(xiang)應(ying)；當請求消(xiao)(xiao)息內容(rong)(rong)檢查出(chu)現錯誤(wu)，則回復不包(bao)含數(shu)據字段(duan)的響(xiang)應(ying)；

二、訪問命令R交互過程：應用向機載(zai)端發送訪問命令R的(de)(de)請求(qiu)消息，機載(zai)端收到請求(qiu)消息后進行處理，當請求(qiu)消息內(nei)容完全(quan)正確，回復包(bao)含數據字段的(de)(de)響(xiang)應；當請求(qiu)消息內(nei)容檢(jian)查出現錯誤，則回復不(bu)包(bao)含數據字段的(de)(de)響(xiang)應；

三、訪(fang)問命令(ling)S交互過程(cheng)：應用(yong)向機載(zai)端(duan)發送訪(fang)問命令(ling)S的請(qing)求消息，機載(zai)端(duan)收到請(qing)求消息后進行處理(li)，當(dang)請(qing)求消息內容完全(quan)正確，回復(fu)包含數據(ju)字(zi)段的響應；當(dang)請(qing)求消息內容檢(jian)查出現錯誤，則回復(fu)不包含數據(ju)字(zi)段的響應。

訪問命(ming)令(ling)A、R、S消息(xi)中(zhong)總線(xian)類型和總線(xian)ID請求的總線(xian)狀態信(xin)息(xi)時，機(ji)載(zai)航(hang)電(dian)總線(xian)信(xin)息(xi)管理(li)協議交(jiao)互(hu)流程的交(jiao)互(hu)協議數據模型具(ju)體(ti)為(wei)：

分為請(qing)求(qiu)消(xiao)息(xi)(xi)和響應(ying)消(xiao)息(xi)(xi)兩(liang)部分，兩(liang)個消(xiao)息(xi)(xi)的字(zi)段(duan)定義如下：

(1)總線類(lei)型：表示請(qing)求總線類(lei)型；

(2)總(zong)線ID：表示請求的具體的某(mou)條總(zong)線。

(3)訪(fang)問(wen)命令(ling)：表示請(qing)求的(de)總(zong)線狀態(tai)信息，訪(fang)問(wen)命令(ling)分為：

A：表示獲取此總線(xian)下面所有狀態信息；

R：表示獲取(qu)此總(zong)線(xian)下面與接收有關的狀態信息；

S：表示獲取此總(zong)線下面與發送有關的(de)狀態信息。

(4)請求消息狀(zhuang)(zhuang)態(tai)碼：表(biao)示請求的消息正(zheng)確與(yu)否，狀(zhuang)(zhuang)態(tai)碼分為：

0：表示請求消息中所(suo)有字段都正(zheng)確；

1：表示請求消息的CRC校(xiao)驗錯誤；

2：表示請求(qiu)消(xiao)息中無此總(zong)線類型；

3：表示請求消(xiao)息中(zhong)無(wu)此總線ID；

4：表示請(qing)求消息中無此訪(fang)問命令。

(5)響應(ying)命令：表示(shi)對請求消(xiao)息中訪問命令的回復，響應(ying)命令分為：

AR：表(biao)示(shi)對訪問命令A的響應；

RR：表示對訪問命令R的(de)響應；

SR：表示對訪問命令(ling)S的響(xiang)應。

(6)數據(ju)：當請求消(xiao)息(xi)(xi)內容(rong)檢查正確和通過，則(ze)響(xiang)(xiang)應(ying)消(xiao)息(xi)(xi)包含此(ci)字段(duan)，如果請求消(xiao)息(xi)(xi)檢查出現錯誤，則(ze)響(xiang)(xiang)應(ying)消(xiao)息(xi)(xi)不包含此(ci)字段(duan)。

(7)CRC：表示消(xiao)息的CRC校(xiao)驗碼。

本發(fa)明具有的(de)優點效果：

本設(she)計在使用過程(cheng)中(zhong)可(ke)以獲(huo)取以下有益效果：

(1)提供對(dui)機載(zai)航電總(zong)(zong)線(xian)(xian)的(de)狀態(tai)(tai)監控和(he)管(guan)理，通過對(dui)每一類航電總(zong)(zong)線(xian)(xian)的(de)每一條航電總(zong)(zong)線(xian)(xian)的(de)狀態(tai)(tai)信息(xi)的(de)統計，便于機載(zai)維(wei)護人員和(he)管(guan)理人員及時地通過遠程方式獲悉航電總(zong)(zong)線(xian)(xian)的(de)歷史(shi)狀態(tai)(tai)信息(xi)，分析機載(zai)航電總(zong)(zong)線(xian)(xian)是否發生(sheng)故(gu)障(zhang)，故(gu)障(zhang)發生(sheng)的(de)時間點和(he)發生(sheng)的(de)頻率，提高了設備的(de)可維(wei)護性(xing)和(he)維(wei)修性(xing)。

(2)方法(fa)的通用性：本方法(fa)是一(yi)種輕量級(ji)的協(xie)(xie)議，機載端實(shi)現協(xie)(xie)議時(shi)占用的硬件資源少，便(bian)于實(shi)現和(he)可操(cao)作性，不論是采(cai)用TCP還是UDP都可實(shi)現此協(xie)(xie)議。

附圖說明

圖(tu)1為機載端航(hang)電總線(xian)管(guan)理信息模型示意圖(tu)。

圖2為(wei)機(ji)載航電總線信息管理交互協議數據模(mo)型(xing)示(shi)意圖。

圖3為機(ji)載航電總線信息管理協議(yi)交互流程示意圖。

圖(tu)4為機載端(duan)航電總線(xian)交換(huan)協議數(shu)據處理流程示意(yi)圖(tu)。

具體實施方式

一種機載端航電總(zong)線狀態交(jiao)換(huan)協議(yi)處理方法，包括：

步驟1、等待接收外部(bu)應(ying)用請(qing)求(qiu)(qiu)消(xiao)息(xi)；如(ru)果接收到外部(bu)應(ying)用請(qing)求(qiu)(qiu)消(xiao)息(xi)，解(jie)析(xi)所述請(qing)求(qiu)(qiu)消(xiao)息(xi)；

步驟2、如果解析(xi)得到所述請(qing)求消息為訪問命(ming)令A消息，根據(ju)訪問命(ming)令A消息中總(zong)線類型和總(zong)線ID請(qing)求的總(zong)線狀(zhuang)態(tai)信息，獲取機載端(duan)航電總(zong)線管理信息庫中對應的總(zong)線類型和總(zong)線ID上(shang)的總(zong)線狀(zhuang)態(tai)信息；

步(bu)驟3、組裝訪問命(ming)令A的(de)響應(ying)消息并(bing)發送給外部應(ying)用(yong)，返回步(bu)驟1；

步驟(zou)4、如果解析(xi)得到(dao)所述請(qing)求(qiu)消(xiao)息(xi)為(wei)訪問命令(ling)R消(xiao)息(xi)，根(gen)據(ju)訪問命令(ling)R消(xiao)息(xi)中(zhong)總(zong)(zong)(zong)(zong)線(xian)類(lei)型和總(zong)(zong)(zong)(zong)線(xian)ID請(qing)求(qiu)的總(zong)(zong)(zong)(zong)線(xian)狀(zhuang)態(tai)信(xin)(xin)息(xi)，獲取機載端航(hang)電(dian)總(zong)(zong)(zong)(zong)線(xian)管理信(xin)(xin)息(xi)庫中(zhong)對應的總(zong)(zong)(zong)(zong)線(xian)類(lei)型和總(zong)(zong)(zong)(zong)線(xian)ID上的總(zong)(zong)(zong)(zong)線(xian)狀(zhuang)態(tai)信(xin)(xin)息(xi)；

步驟5、組裝訪問命令R的響應消(xiao)息(xi)并發送給外部應用(yong)，返回步驟1；

步驟6、如果解析得到所述請(qing)(qing)求(qiu)消(xiao)(xiao)息為訪問命(ming)令S消(xiao)(xiao)息，根據訪問命(ming)令S消(xiao)(xiao)息中(zhong)總(zong)線類型和(he)(he)總(zong)線ID請(qing)(qing)求(qiu)的總(zong)線狀態信(xin)息，獲取機載端航(hang)電總(zong)線管理信(xin)息庫(ku)中(zhong)對應的總(zong)線類型和(he)(he)總(zong)線ID上的總(zong)線狀態信(xin)息；

步(bu)驟(zou)7、組裝訪問命令S的響應(ying)消(xiao)息并發送給外(wai)部應(ying)用，返回(hui)步(bu)驟(zou)1。

航電總線管(guan)理(li)信息(xi)庫中(zhong)機(ji)載端(duan)航電總線管(guan)理(li)信息(xi)模型為：

(1)機(ji)載端航電總(zong)線(xian)管(guan)理信(xin)息(xi)(xi)模型(xing)采用樹形結構，模型(xing)采用四層樹，根節(jie)點(dian)(dian)是管(guan)理信(xin)息(xi)(xi)庫，一層是總(zong)線(xian)類型(xing)節(jie)點(dian)(dian)，二層是總(zong)線(xian)號節(jie)點(dian)(dian)，三層是記錄(lu)的航電總(zong)線(xian)狀態信(xin)息(xi)(xi)；

(2)航電總線(xian)管理(li)信(xin)(xin)息模型(xing)的狀態信(xin)(xin)息中包含(han)如下關(guan)系：

當正常接收情況：

a.接收總(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)(ju)總(zong)(zong)字(zi)(zi)節數(shu)(shu)(shu)(shu)次數(shu)(shu)(shu)(shu)*4294967296+接收總(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)(ju)總(zong)(zong)字(zi)(zi)節數(shu)(shu)(shu)(shu)＝(接收數(shu)(shu)(shu)(shu)據(ju)(ju)成功總(zong)(zong)字(zi)(zi)節數(shu)(shu)(shu)(shu)次數(shu)(shu)(shu)(shu)*4294967296+接收總(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)(ju)成功總(zong)(zong)字(zi)(zi)節數(shu)(shu)(shu)(shu))+(接收數(shu)(shu)(shu)(shu)據(ju)(ju)失敗總(zong)(zong)字(zi)(zi)節數(shu)(shu)(shu)(shu)次數(shu)(shu)(shu)(shu)*4294967296+接收總(zong)(zong)線(xian)數(shu)(shu)(shu)(shu)據(ju)(ju)失敗總(zong)(zong)字(zi)(zi)節數(shu)(shu)(shu)(shu))；

b.當接收總線數(shu)據(ju)(ju)總字節數(shu)等于4294967296時，接收總線數(shu)據(ju)(ju)總字節數(shu)次數(shu)加1；

c.當接收(shou)總(zong)線數據成(cheng)功(gong)總(zong)字節數等于(yu)4294967296，接收(shou)數據成(cheng)功(gong)總(zong)字節數次數加1；

d.每當接(jie)(jie)(jie)(jie)(jie)收(shou)一次數(shu)據(ju)(ju)(ju)，數(shu)據(ju)(ju)(ju)通(tong)過完(wan)整性校驗，則接(jie)(jie)(jie)(jie)(jie)收(shou)總(zong)線(xian)數(shu)據(ju)(ju)(ju)成功(gong)總(zong)字(zi)節數(shu)更(geng)新為原來的(de)值(zhi)(zhi)加(jia)上本次接(jie)(jie)(jie)(jie)(jie)收(shou)的(de)數(shu)據(ju)(ju)(ju)的(de)字(zi)節數(shu)，接(jie)(jie)(jie)(jie)(jie)收(shou)總(zong)線(xian)數(shu)據(ju)(ju)(ju)總(zong)字(zi)節數(shu)更(geng)新為原來的(de)值(zhi)(zhi)加(jia)上本次接(jie)(jie)(jie)(jie)(jie)收(shou)的(de)數(shu)據(ju)(ju)(ju)的(de)字(zi)節數(shu)，接(jie)(jie)(jie)(jie)(jie)收(shou)成功(gong)次數(shu)加(jia)1，最近一次接(jie)(jie)(jie)(jie)(jie)收(shou)總(zong)線(xian)數(shu)據(ju)(ju)(ju)成功(gong)時(shi)(shi)(shi)間(jian)更(geng)新為接(jie)(jie)(jie)(jie)(jie)收(shou)數(shu)據(ju)(ju)(ju)時(shi)(shi)(shi)時(shi)(shi)(shi)間(jian)；當接(jie)(jie)(jie)(jie)(jie)收(shou)數(shu)據(ju)(ju)(ju)是第一個(ge)數(shu)據(ju)(ju)(ju)包時(shi)(shi)(shi)，記(ji)錄(lu)第一次接(jie)(jie)(jie)(jie)(jie)收(shou)數(shu)據(ju)(ju)(ju)時(shi)(shi)(shi)間(jian)；

e.當(dang)接收(shou)總線數據失(shi)敗(bai)總字節(jie)數等(deng)于4294967296，接收(shou)數據失(shi)敗(bai)總字節(jie)數次數加1；

f.每當接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)一(yi)次(ci)(ci)數(shu)據(ju)(ju)(ju)，數(shu)據(ju)(ju)(ju)未能(neng)通(tong)過完(wan)整性校驗，則(ze)接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)總(zong)線數(shu)據(ju)(ju)(ju)失(shi)敗(bai)總(zong)字節數(shu)更新(xin)(xin)為原來的(de)值加(jia)上本次(ci)(ci)接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)的(de)數(shu)據(ju)(ju)(ju)的(de)字節數(shu)，接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)總(zong)線數(shu)據(ju)(ju)(ju)總(zong)字節數(shu)更新(xin)(xin)為原來的(de)值加(jia)上本次(ci)(ci)接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)的(de)數(shu)據(ju)(ju)(ju)的(de)字節數(shu)，接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)失(shi)敗(bai)次(ci)(ci)數(shu)加(jia)1，最近一(yi)次(ci)(ci)接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)總(zong)線數(shu)據(ju)(ju)(ju)失(shi)敗(bai)時(shi)(shi)間(jian)(jian)更新(xin)(xin)為接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)數(shu)據(ju)(ju)(ju)時(shi)(shi)時(shi)(shi)間(jian)(jian)；當接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)數(shu)據(ju)(ju)(ju)是第一(yi)個數(shu)據(ju)(ju)(ju)包時(shi)(shi)，記(ji)錄第一(yi)次(ci)(ci)接(jie)(jie)(jie)(jie)(jie)(jie)收(shou)數(shu)據(ju)(ju)(ju)時(shi)(shi)間(jian)(jian)；

g.當接收(shou)失敗次數達到設定(ding)的閾值后，接收(shou)總線(xian)(xian)狀態設置為失效(xiao)狀態，否則接收(shou)總線(xian)(xian)狀態設置為正常工作狀態；

當正常發送情況：

a.發(fa)送(song)總(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)據(ju)(ju)總(zong)(zong)(zong)字(zi)(zi)(zi)節數(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)*4294967296+發(fa)送(song)總(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)據(ju)(ju)總(zong)(zong)(zong)字(zi)(zi)(zi)節數(shu)(shu)(shu)＝(發(fa)送(song)數(shu)(shu)(shu)據(ju)(ju)成功(gong)總(zong)(zong)(zong)字(zi)(zi)(zi)節數(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)*4294967296+發(fa)送(song)總(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)據(ju)(ju)成功(gong)總(zong)(zong)(zong)字(zi)(zi)(zi)節數(shu)(shu)(shu))+(發(fa)送(song)數(shu)(shu)(shu)據(ju)(ju)失敗(bai)總(zong)(zong)(zong)字(zi)(zi)(zi)節數(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)*4294967296+發(fa)送(song)總(zong)(zong)(zong)線(xian)數(shu)(shu)(shu)據(ju)(ju)失敗(bai)總(zong)(zong)(zong)字(zi)(zi)(zi)節數(shu)(shu)(shu)次(ci)數(shu)(shu)(shu))；

b.當發送(song)總線數(shu)(shu)據總字節數(shu)(shu)等于(yu)4294967296時，發送(song)總線數(shu)(shu)據總字節數(shu)(shu)次數(shu)(shu)加1；

c.當發(fa)送(song)(song)總(zong)線(xian)數據(ju)成(cheng)功(gong)總(zong)字(zi)節數等于4294967296時，發(fa)送(song)(song)數據(ju)成(cheng)功(gong)總(zong)字(zi)節數次數加1；

d.每當發(fa)(fa)(fa)送(song)(song)(song)一次(ci)(ci)數(shu)據(ju)(ju)，數(shu)據(ju)(ju)發(fa)(fa)(fa)送(song)(song)(song)成(cheng)功，則發(fa)(fa)(fa)送(song)(song)(song)總(zong)線(xian)數(shu)據(ju)(ju)成(cheng)功總(zong)字節(jie)數(shu)更(geng)新(xin)為原(yuan)來(lai)的值加上本次(ci)(ci)發(fa)(fa)(fa)送(song)(song)(song)的數(shu)據(ju)(ju)的字節(jie)數(shu)，發(fa)(fa)(fa)送(song)(song)(song)總(zong)線(xian)數(shu)據(ju)(ju)總(zong)字節(jie)數(shu)更(geng)新(xin)為原(yuan)來(lai)的值加上本次(ci)(ci)發(fa)(fa)(fa)送(song)(song)(song)的數(shu)據(ju)(ju)的字節(jie)數(shu)，發(fa)(fa)(fa)送(song)(song)(song)成(cheng)功次(ci)(ci)數(shu)加1，最近一次(ci)(ci)發(fa)(fa)(fa)送(song)(song)(song)總(zong)線(xian)數(shu)據(ju)(ju)成(cheng)功時(shi)間更(geng)新(xin)為發(fa)(fa)(fa)送(song)(song)(song)數(shu)據(ju)(ju)時(shi)時(shi)間；當發(fa)(fa)(fa)送(song)(song)(song)數(shu)據(ju)(ju)是第一個數(shu)據(ju)(ju)包(bao)時(shi)，記(ji)錄(lu)第一次(ci)(ci)發(fa)(fa)(fa)送(song)(song)(song)數(shu)據(ju)(ju)時(shi)間；

e.當發(fa)送總(zong)(zong)線數(shu)據(ju)失(shi)敗(bai)總(zong)(zong)字節數(shu)等于4294967296，發(fa)送數(shu)據(ju)失(shi)敗(bai)總(zong)(zong)字節數(shu)次數(shu)加1；

f.每當發(fa)送(song)一次數(shu)(shu)(shu)據(ju)(ju)，數(shu)(shu)(shu)據(ju)(ju)發(fa)送(song)失敗，則發(fa)送(song)總(zong)線(xian)數(shu)(shu)(shu)據(ju)(ju)失敗總(zong)字節(jie)數(shu)(shu)(shu)更新(xin)為原來的(de)(de)值加(jia)上本(ben)次發(fa)送(song)的(de)(de)數(shu)(shu)(shu)據(ju)(ju)的(de)(de)字節(jie)數(shu)(shu)(shu)，發(fa)送(song)總(zong)線(xian)數(shu)(shu)(shu)據(ju)(ju)總(zong)字節(jie)數(shu)(shu)(shu)更新(xin)為原來的(de)(de)值加(jia)上本(ben)次發(fa)送(song)的(de)(de)數(shu)(shu)(shu)據(ju)(ju)的(de)(de)字節(jie)數(shu)(shu)(shu)，發(fa)送(song)失敗次數(shu)(shu)(shu)加(jia)1，最近一次發(fa)送(song)總(zong)線(xian)數(shu)(shu)(shu)據(ju)(ju)失敗時間更新(xin)為發(fa)送(song)數(shu)(shu)(shu)據(ju)(ju)時時間；當發(fa)送(song)數(shu)(shu)(shu)據(ju)(ju)是第(di)一個數(shu)(shu)(shu)據(ju)(ju)包時，記錄第(di)一次發(fa)送(song)數(shu)(shu)(shu)據(ju)(ju)時間；

g.當發送失敗次數達到設(she)置(zhi)(zhi)的閾值后，發送總(zong)線(xian)(xian)狀(zhuang)態設(she)置(zhi)(zhi)為失效狀(zhuang)態，否則閾值內(nei)，發送總(zong)線(xian)(xian)狀(zhuang)態設(she)置(zhi)(zhi)為正(zheng)常工作狀(zhuang)態。

訪(fang)問命(ming)令A、R、S消息中總(zong)線(xian)(xian)類型和(he)總(zong)線(xian)(xian)ID請求的總(zong)線(xian)(xian)狀(zhuang)態信息時，機載航電總(zong)線(xian)(xian)信息管理協議交(jiao)互流程(cheng)包括(kuo)：

一(yi)、訪(fang)問(wen)命(ming)令A交(jiao)互過程：應(ying)用向機載端發送訪(fang)問(wen)命(ming)令A的(de)請(qing)求消(xiao)(xiao)(xiao)息(xi)(xi)(xi)，機載端收到請(qing)求消(xiao)(xiao)(xiao)息(xi)(xi)(xi)后進行處(chu)理，當(dang)請(qing)求消(xiao)(xiao)(xiao)息(xi)(xi)(xi)內(nei)容(rong)完(wan)全正(zheng)確(que)，回(hui)復(fu)包含數(shu)據(ju)(ju)字段(duan)的(de)響應(ying)；當(dang)請(qing)求消(xiao)(xiao)(xiao)息(xi)(xi)(xi)內(nei)容(rong)檢查出(chu)現錯誤，則回(hui)復(fu)不包含數(shu)據(ju)(ju)字段(duan)的(de)響應(ying)；

二(er)、訪問(wen)(wen)命令R交互過程：應(ying)用向機(ji)載端發送訪問(wen)(wen)命令R的(de)請(qing)求(qiu)消息，機(ji)載端收(shou)到請(qing)求(qiu)消息后進(jin)行處理，當(dang)請(qing)求(qiu)消息內容(rong)完(wan)全正確，回(hui)(hui)復包含數(shu)據(ju)字段的(de)響應(ying)；當(dang)請(qing)求(qiu)消息內容(rong)檢查出現(xian)錯誤(wu)，則回(hui)(hui)復不包含數(shu)據(ju)字段的(de)響應(ying)；

三、訪問(wen)命令S交互過程：應用(yong)向機(ji)載端發(fa)送(song)訪問(wen)命令S的請求(qiu)(qiu)消(xiao)(xiao)息(xi)，機(ji)載端收(shou)到請求(qiu)(qiu)消(xiao)(xiao)息(xi)后進行處理，當請求(qiu)(qiu)消(xiao)(xiao)息(xi)內容完全正確，回(hui)復包含數據字段的響應；當請求(qiu)(qiu)消(xiao)(xiao)息(xi)內容檢查出現錯誤，則回(hui)復不包含數據字段的響應。

訪問命(ming)令A、R、S消(xiao)息(xi)中(zhong)總(zong)(zong)線類(lei)型和總(zong)(zong)線ID請求的(de)總(zong)(zong)線狀態信息(xi)時，機載航電總(zong)(zong)線信息(xi)管理協(xie)議交互流程的(de)交互協(xie)議數據模型具體(ti)為：

分為請求消息和響(xiang)應消息兩(liang)部分，兩(liang)個消息的字段定義(yi)如下：

(1)總線(xian)類型：表示請求(qiu)總線(xian)類型；

(2)總線(xian)ID：表示請求的具(ju)體的某條(tiao)總線(xian)。

(3)訪(fang)問命(ming)令：表示請求的總線狀態(tai)信(xin)息(xi)，訪(fang)問命(ming)令分為(wei)：

A：表示獲取此總線下(xia)面所有狀態信息(xi)；

R：表示獲取(qu)此總線(xian)下面與接收有關的狀態信息；

S：表示獲取此總(zong)線下(xia)面(mian)與發送有關的(de)狀態信息。

(4)請(qing)(qing)求消(xiao)息(xi)狀態(tai)碼(ma)：表示請(qing)(qing)求的消(xiao)息(xi)正確與否，狀態(tai)碼(ma)分為：

0：表示請求消息中所有字段都正確；

1：表示請求消息的(de)CRC校驗錯誤(wu)；

2：表示請求消息中無此總線(xian)類(lei)型；

3：表示請(qing)求消息(xi)中無此總線ID；

4：表示請(qing)求消息(xi)中(zhong)無(wu)此(ci)訪問命令。

(5)響(xiang)應命(ming)令：表示對(dui)請求消息中訪問命(ming)令的回(hui)復，響(xiang)應命(ming)令分為(wei)：

AR：表示(shi)對訪問命令A的響應；

RR：表示對訪問命令R的響應；

SR：表(biao)示對訪問命令S的響應(ying)。

(6)數據：當請求消(xiao)息(xi)內容檢(jian)查正確和通(tong)過(guo)，則(ze)響(xiang)應消(xiao)息(xi)包含此字段，如果請求消(xiao)息(xi)檢(jian)查出現錯誤(wu)，則(ze)響(xiang)應消(xiao)息(xi)不包含此字段。

(7)CRC：表示消息的(de)CRC校驗碼。

實施例

機(ji)載端航(hang)電總(zong)(zong)線交(jiao)互協議數(shu)據處理(li)流程(cheng)描述了(le)機(ji)載端航(hang)電總(zong)(zong)線交(jiao)互協議服務處理(li)的(de)過程(cheng)和流程(cheng)，如圖4所示。

(1)機載端服務等待(dai)接收外部應(ying)用請求消息(xi)，無消息(xi)則一直等待(dai)，有消息(xi)時轉到(2)；

(2)解(jie)析(xi)外部應用發送的(de)請(qing)求消(xiao)息，根據請(qing)求消(xiao)息格(ge)式(圖2請(qing)求消(xiao)息)來解(jie)析(xi)消(xiao)息；若(ruo)請(qing)求消(xiao)息正確，且訪(fang)問(wen)命(ming)(ming)令(ling)是(shi)A，則執行圖3中的(de)訪(fang)問(wen)命(ming)(ming)令(ling)A過程(cheng)，轉(zhuan)到(dao)(dao)(3)；若(ruo)訪(fang)問(wen)命(ming)(ming)令(ling)是(shi)R，則執行圖3中的(de)訪(fang)問(wen)命(ming)(ming)令(ling)R過程(cheng)，轉(zhuan)到(dao)(dao)(6)；若(ruo)訪(fang)問(wen)命(ming)(ming)令(ling)是(shi)S，則執行圖3中的(de)訪(fang)問(wen)命(ming)(ming)令(ling)S過程(cheng)，轉(zhuan)到(dao)(dao)(9)；若(ruo)解(jie)析(xi)請(qing)求消(xiao)息錯誤，則轉(zhuan)到(dao)(dao)(1)；

(3)根據請求消息中的訪問命令A、總(zong)(zong)線(xian)類型(xing)和總(zong)(zong)線(xian)ID，獲取圖1中機載端(duan)航(hang)電總(zong)(zong)線(xian)管(guan)理信息庫中對(dui)應的總(zong)(zong)線(xian)類型(xing)和總(zong)(zong)線(xian)ID上的總(zong)(zong)線(xian)狀態信息，獲取成功后，轉到(dao)(4)；

(4)按圖2中(zhong)響應消(xiao)息格式組(zu)裝訪(fang)問命令A的(de)響應消(xiao)息，組(zu)裝成功(gong)后(hou)，轉到(5)；

(5)向(xiang)外部應(ying)用發送請求(qiu)訪問(wen)命令A對應(ying)的響(xiang)應(ying)消息(xi)。發送完成(cheng)后，轉(zhuan)到(1)；

(6)根(gen)據請(qing)求(qiu)消(xiao)息中(zhong)(zhong)的訪問命令R、總(zong)線類型(xing)和總(zong)線ID，獲取圖1中(zhong)(zhong)機載端航電(dian)總(zong)線管理信(xin)息庫中(zhong)(zhong)對應的總(zong)線類型(xing)和總(zong)線ID上的總(zong)線狀態信(xin)息，獲取成功后，轉到(7)；

(7)按圖2中響(xiang)應(ying)消(xiao)息格式組裝訪問命(ming)令R的(de)響(xiang)應(ying)消(xiao)息，組裝成功后(hou)，轉到(8)；

(8)向外部應用發(fa)送請求(qiu)訪(fang)問命令R對應的(de)響應消息。發(fa)送完成后，轉到(1)；

(9)根據(ju)請求消息(xi)(xi)中的訪問(wen)命令S、總(zong)線類型和總(zong)線ID，獲(huo)取圖1中機載端航電(dian)總(zong)線管理信(xin)息(xi)(xi)庫中對(dui)應的總(zong)線類型和總(zong)線ID上的總(zong)線狀(zhuang)態(tai)信(xin)息(xi)(xi)，獲(huo)取成功后，轉到(10)；

(10)按圖2中響應(ying)消(xiao)息格式組裝訪問命(ming)令S的響應(ying)消(xiao)息，組裝成功后，轉到(11)；

(11)向外部應(ying)用(yong)發送訪問命令S對應(ying)的響應(ying)消息。發送完成后(hou)，轉(zhuan)到(1)；

1.機載端航電(dian)總線管理信息(xi)模型

機載端航電總(zong)線管理(li)信息模型如(ru)圖1所(suo)示。

(1)機載端航電總線(xian)管(guan)理(li)信息(xi)模(mo)(mo)型采用樹(shu)(shu)形(xing)結(jie)構，模(mo)(mo)型采用四層樹(shu)(shu)，根節點(dian)是(shi)管(guan)理(li)信息(xi)庫，一層是(shi)總線(xian)類型節點(dian)，二(er)層是(shi)總線(xian)號節點(dian)，三層是(shi)記錄的航電總線(xian)狀態信息(xi)。

(2)航電總線管理信(xin)息模型(xing)的狀(zhuang)態信(xin)息中包含如(ru)下(xia)關系：

當正常接收情況：

h.接收(shou)總(zong)線數(shu)(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)總(zong)字(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)(shu)次數(shu)(shu)(shu)(shu)(shu)(shu)*4294967296+接收(shou)總(zong)線數(shu)(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)總(zong)字(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)(shu)＝(接收(shou)數(shu)(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)成功總(zong)字(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)(shu)次數(shu)(shu)(shu)(shu)(shu)(shu)*4294967296+接收(shou)總(zong)線數(shu)(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)成功總(zong)字(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)(shu))+(接收(shou)數(shu)(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)失敗總(zong)字(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)(shu)次數(shu)(shu)(shu)(shu)(shu)(shu)*4294967296+接收(shou)總(zong)線數(shu)(shu)(shu)(shu)(shu)(shu)據(ju)(ju)(ju)失敗總(zong)字(zi)節(jie)數(shu)(shu)(shu)(shu)(shu)(shu))；

i.當接收(shou)總(zong)線數(shu)據總(zong)字節(jie)數(shu)等于4294967296時，接收(shou)總(zong)線數(shu)據總(zong)字節(jie)數(shu)次(ci)數(shu)加1；

j.當接(jie)(jie)收總線數據成功總字(zi)節數等(deng)于4294967296，接(jie)(jie)收數據成功總字(zi)節數次數加1；

k.每當接(jie)(jie)(jie)(jie)收一(yi)(yi)次(ci)(ci)數(shu)(shu)據，數(shu)(shu)據通過完整性校驗，則(ze)接(jie)(jie)(jie)(jie)收總線(xian)數(shu)(shu)據成(cheng)功總字(zi)(zi)節(jie)數(shu)(shu)更(geng)新(xin)為原來(lai)的(de)值(zhi)加上本次(ci)(ci)接(jie)(jie)(jie)(jie)收的(de)數(shu)(shu)據的(de)字(zi)(zi)節(jie)數(shu)(shu)，接(jie)(jie)(jie)(jie)收總線(xian)數(shu)(shu)據總字(zi)(zi)節(jie)數(shu)(shu)更(geng)新(xin)為原來(lai)的(de)值(zhi)加上本次(ci)(ci)接(jie)(jie)(jie)(jie)收的(de)數(shu)(shu)據的(de)字(zi)(zi)節(jie)數(shu)(shu)，接(jie)(jie)(jie)(jie)收成(cheng)功次(ci)(ci)數(shu)(shu)加1，最近(jin)一(yi)(yi)次(ci)(ci)接(jie)(jie)(jie)(jie)收總線(xian)數(shu)(shu)據成(cheng)功時間(jian)(jian)更(geng)新(xin)為接(jie)(jie)(jie)(jie)收數(shu)(shu)據時時間(jian)(jian)；當接(jie)(jie)(jie)(jie)收數(shu)(shu)據是第一(yi)(yi)個數(shu)(shu)據包時，記錄第一(yi)(yi)次(ci)(ci)接(jie)(jie)(jie)(jie)收數(shu)(shu)據時間(jian)(jian)。

l.當(dang)接收總線數(shu)(shu)據失敗總字節(jie)數(shu)(shu)等(deng)于4294967296，接收數(shu)(shu)據失敗總字節(jie)數(shu)(shu)次數(shu)(shu)加1；

m.每當接(jie)(jie)收(shou)(shou)(shou)(shou)一(yi)次(ci)數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)，數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)未(wei)能通過完整性校驗，則接(jie)(jie)收(shou)(shou)(shou)(shou)總線(xian)數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)失(shi)敗(bai)總字節(jie)數(shu)(shu)(shu)(shu)更新為(wei)原(yuan)來的值(zhi)加上本次(ci)接(jie)(jie)收(shou)(shou)(shou)(shou)的數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)的字節(jie)數(shu)(shu)(shu)(shu)，接(jie)(jie)收(shou)(shou)(shou)(shou)總線(xian)數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)總字節(jie)數(shu)(shu)(shu)(shu)更新為(wei)原(yuan)來的值(zhi)加上本次(ci)接(jie)(jie)收(shou)(shou)(shou)(shou)的數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)的字節(jie)數(shu)(shu)(shu)(shu)，接(jie)(jie)收(shou)(shou)(shou)(shou)失(shi)敗(bai)次(ci)數(shu)(shu)(shu)(shu)加1，最近一(yi)次(ci)接(jie)(jie)收(shou)(shou)(shou)(shou)總線(xian)數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)失(shi)敗(bai)時間更新為(wei)接(jie)(jie)收(shou)(shou)(shou)(shou)數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)時時間；當接(jie)(jie)收(shou)(shou)(shou)(shou)數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)是(shi)第一(yi)個數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)包時，記錄(lu)第一(yi)次(ci)接(jie)(jie)收(shou)(shou)(shou)(shou)數(shu)(shu)(shu)(shu)據(ju)(ju)(ju)時間。

n.當接收(shou)失敗次數達到設定(ding)的閾值后，接收(shou)總線狀態(tai)設置為失效狀態(tai)，否(fou)則接收(shou)總線狀態(tai)設置為正常工作(zuo)狀態(tai)。

當正常發送情況：

h.發(fa)送總線(xian)(xian)數(shu)(shu)據(ju)總字(zi)節(jie)數(shu)(shu)次(ci)(ci)數(shu)(shu)*4294967296+發(fa)送總線(xian)(xian)數(shu)(shu)據(ju)總字(zi)節(jie)數(shu)(shu)＝(發(fa)送數(shu)(shu)據(ju)成功(gong)總字(zi)節(jie)數(shu)(shu)次(ci)(ci)數(shu)(shu)*4294967296+發(fa)送總線(xian)(xian)數(shu)(shu)據(ju)成功(gong)總字(zi)節(jie)數(shu)(shu))+(發(fa)送數(shu)(shu)據(ju)失敗(bai)總字(zi)節(jie)數(shu)(shu)次(ci)(ci)數(shu)(shu)*4294967296+發(fa)送總線(xian)(xian)數(shu)(shu)據(ju)失敗(bai)總字(zi)節(jie)數(shu)(shu)次(ci)(ci)數(shu)(shu))

i.當發送總(zong)線數(shu)據(ju)總(zong)字(zi)節數(shu)等于4294967296時，發送總(zong)線數(shu)據(ju)總(zong)字(zi)節數(shu)次數(shu)加1；

j.當(dang)發送(song)總(zong)線數(shu)據(ju)成功(gong)總(zong)字節(jie)數(shu)等(deng)于(yu)4294967296時(shi)，發送(song)數(shu)據(ju)成功(gong)總(zong)字節(jie)數(shu)次數(shu)加(jia)1；

k.每當發(fa)(fa)(fa)送(song)(song)(song)(song)一次(ci)數(shu)(shu)(shu)據，數(shu)(shu)(shu)據發(fa)(fa)(fa)送(song)(song)(song)(song)成(cheng)功(gong)，則發(fa)(fa)(fa)送(song)(song)(song)(song)總線(xian)數(shu)(shu)(shu)據成(cheng)功(gong)總字(zi)(zi)節(jie)數(shu)(shu)(shu)更(geng)新為原來的值加(jia)上本次(ci)發(fa)(fa)(fa)送(song)(song)(song)(song)的數(shu)(shu)(shu)據的字(zi)(zi)節(jie)數(shu)(shu)(shu)，發(fa)(fa)(fa)送(song)(song)(song)(song)總線(xian)數(shu)(shu)(shu)據總字(zi)(zi)節(jie)數(shu)(shu)(shu)更(geng)新為原來的值加(jia)上本次(ci)發(fa)(fa)(fa)送(song)(song)(song)(song)的數(shu)(shu)(shu)據的字(zi)(zi)節(jie)數(shu)(shu)(shu)，發(fa)(fa)(fa)送(song)(song)(song)(song)成(cheng)功(gong)次(ci)數(shu)(shu)(shu)加(jia)1，最近一次(ci)發(fa)(fa)(fa)送(song)(song)(song)(song)總線(xian)數(shu)(shu)(shu)據成(cheng)功(gong)時(shi)間更(geng)新為發(fa)(fa)(fa)送(song)(song)(song)(song)數(shu)(shu)(shu)據時(shi)時(shi)間；當發(fa)(fa)(fa)送(song)(song)(song)(song)數(shu)(shu)(shu)據是(shi)第一個數(shu)(shu)(shu)據包時(shi)，記錄第一次(ci)發(fa)(fa)(fa)送(song)(song)(song)(song)數(shu)(shu)(shu)據時(shi)間。

l.當發送總(zong)線數(shu)(shu)(shu)據失敗總(zong)字(zi)節數(shu)(shu)(shu)等于4294967296，發送數(shu)(shu)(shu)據失敗總(zong)字(zi)節數(shu)(shu)(shu)次(ci)數(shu)(shu)(shu)加1；

m.每當發(fa)(fa)送(song)(song)一(yi)次(ci)數(shu)(shu)據(ju)(ju)(ju)(ju)，數(shu)(shu)據(ju)(ju)(ju)(ju)發(fa)(fa)送(song)(song)失敗(bai)，則發(fa)(fa)送(song)(song)總線(xian)數(shu)(shu)據(ju)(ju)(ju)(ju)失敗(bai)總字(zi)(zi)節(jie)數(shu)(shu)更(geng)新(xin)為原來(lai)的(de)(de)值加上(shang)本次(ci)發(fa)(fa)送(song)(song)的(de)(de)數(shu)(shu)據(ju)(ju)(ju)(ju)的(de)(de)字(zi)(zi)節(jie)數(shu)(shu)，發(fa)(fa)送(song)(song)總線(xian)數(shu)(shu)據(ju)(ju)(ju)(ju)總字(zi)(zi)節(jie)數(shu)(shu)更(geng)新(xin)為原來(lai)的(de)(de)值加上(shang)本次(ci)發(fa)(fa)送(song)(song)的(de)(de)數(shu)(shu)據(ju)(ju)(ju)(ju)的(de)(de)字(zi)(zi)節(jie)數(shu)(shu)，發(fa)(fa)送(song)(song)失敗(bai)次(ci)數(shu)(shu)加1，最近一(yi)次(ci)發(fa)(fa)送(song)(song)總線(xian)數(shu)(shu)據(ju)(ju)(ju)(ju)失敗(bai)時間(jian)(jian)更(geng)新(xin)為發(fa)(fa)送(song)(song)數(shu)(shu)據(ju)(ju)(ju)(ju)時時間(jian)(jian)；當發(fa)(fa)送(song)(song)數(shu)(shu)據(ju)(ju)(ju)(ju)是第一(yi)個數(shu)(shu)據(ju)(ju)(ju)(ju)包時，記錄第一(yi)次(ci)發(fa)(fa)送(song)(song)數(shu)(shu)據(ju)(ju)(ju)(ju)時間(jian)(jian)。

n.當發送失敗次數達到設(she)置(zhi)(zhi)的閾(yu)值后，發送總(zong)線狀態(tai)(tai)(tai)設(she)置(zhi)(zhi)為失效狀態(tai)(tai)(tai)，否則閾(yu)值內，發送總(zong)線狀態(tai)(tai)(tai)設(she)置(zhi)(zhi)為正常(chang)工作狀態(tai)(tai)(tai)。

2.機載航電總線信息(xi)管理交互協議數據(ju)模型

機載(zai)航電總線信息管理交互協議數據模型如圖2所(suo)示，

交互協議數據模型的(de)分為請求消息(xi)和(he)響(xiang)應消息(xi)兩部分，兩個消息(xi)的(de)字(zi)段定(ding)義如下：

(1)總線(xian)類型：表示(shi)請求總線(xian)類型；

(2)總線ID：表示請求的具體的某條(tiao)總線。

(3)訪問命令：表(biao)示(shi)請求的總線狀態信(xin)息，訪問命令分為：

A：表(biao)示(shi)獲取此(ci)總(zong)線(xian)下(xia)面(mian)所有狀(zhuang)態(tai)信息；

R：表示(shi)獲取此總線下面與接收有關的狀態信息；

S：表(biao)示獲取此總線下(xia)面與(yu)發送有關的狀態(tai)信息。

(4)請(qing)求(qiu)消息(xi)(xi)狀(zhuang)態(tai)碼(ma)(ma)：表(biao)示請(qing)求(qiu)的(de)消息(xi)(xi)正確與否，狀(zhuang)態(tai)碼(ma)(ma)分為：

0：表示請(qing)求(qiu)消息(xi)中所有字(zi)段都正確(que)；

1：表示請求消(xiao)息的(de)CRC校驗錯誤；

2：表示請求(qiu)消息中無(wu)此總線(xian)類型；

3：表示請求(qiu)消息中(zhong)無此總線ID；

4：表示(shi)請求消(xiao)息中無此訪(fang)問命令。

(5)響應命令：表示(shi)對請求消息中訪問命令的回(hui)復，響應命令分為(wei)：

AR：表示對訪問命(ming)令A的響應；

RR：表(biao)示對訪問(wen)命令R的(de)響應；

SR：表示對訪問命令S的響應。

(6)數據(ju)：當請求消(xiao)(xiao)息內容檢查正確和通過，則響應(ying)消(xiao)(xiao)息包含(han)此字(zi)段(duan)，如(ru)果(guo)請求消(xiao)(xiao)息檢查出現錯誤，則響應(ying)消(xiao)(xiao)息不包含(han)此字(zi)段(duan)。

(7)CRC：表示消息(xi)的CRC校(xiao)驗碼。

3.機載航電總(zong)線信息管理協議交互流(liu)程

機載航電(dian)總線信(xin)(xin)息管(guan)理協議(yi)交互(hu)流程如圖3所示，用于(yu)描述應用與機載端航電(dian)總線信(xin)(xin)息管(guan)理協議(yi)服務的(de)交互(hu)過程。

(1)訪(fang)問(wen)(wen)命令(ling)A交互過程：應(ying)用(yong)向機(ji)載(zai)端發送訪(fang)問(wen)(wen)命令(ling)A的請求(qiu)(qiu)消息，機(ji)載(zai)端收到請求(qiu)(qiu)消息后進行處理(li)，當請求(qiu)(qiu)消息內容完全正確，回(hui)復包(bao)含(han)數據字段的響應(ying)；當請求(qiu)(qiu)消息內容檢查出現錯(cuo)誤(wu)，則回(hui)復不(bu)包(bao)含(han)數據字段的響應(ying)。

(2)訪問(wen)命令(ling)R交互過(guo)程(cheng)：應(ying)用向(xiang)機(ji)載(zai)(zai)端發送訪問(wen)命令(ling)R的請(qing)求(qiu)消息，機(ji)載(zai)(zai)端收到請(qing)求(qiu)消息后進行處理(li)，當請(qing)求(qiu)消息內(nei)容(rong)完全(quan)正確(que)，回復(fu)(fu)包含數據字段(duan)的響應(ying)；當請(qing)求(qiu)消息內(nei)容(rong)檢查出現錯誤，則回復(fu)(fu)不包含數據字段(duan)的響應(ying)。

(3)訪問命(ming)令S交(jiao)互(hu)過程：應用向機載端(duan)發送訪問命(ming)令S的(de)請求(qiu)消息(xi)(xi)，機載端(duan)收(shou)到(dao)請求(qiu)消息(xi)(xi)后進行(xing)處(chu)理(li)，當請求(qiu)消息(xi)(xi)內容(rong)完全正(zheng)確(que)，回復包含(han)數據字(zi)段的(de)響(xiang)應；當請求(qiu)消息(xi)(xi)內容(rong)檢查出(chu)現錯誤(wu)，則回復不包含(han)數據字(zi)段的(de)響(xiang)應。

4.機載端(duan)航電總線交(jiao)互協議數據處理(li)流程

機(ji)載端航電總線交互協議(yi)數據(ju)處理流(liu)程(cheng)(cheng)描述了機(ji)載端航電總線交互協議(yi)服(fu)務處理的過程(cheng)(cheng)和流(liu)程(cheng)(cheng)，如圖4所示。

機載(zai)端航(hang)電(dian)總(zong)(zong)線(xian)交互(hu)協議處理流程(cheng)通過(guo)(guo)圖4所示的過(guo)(guo)程(cheng)，對(dui)來自應(ying)(ying)用的請求消息進行解析，并且根據航(hang)電(dian)總(zong)(zong)線(xian)類(lei)型(xing)、總(zong)(zong)線(xian)ID和訪(fang)問命令獲取(qu)相應(ying)(ying)的數(shu)據，最后將響應(ying)(ying)發(fa)送(song)給應(ying)(ying)用。

在MA700機載(zai)(zai)信息(xi)管理(li)系(xi)統機載(zai)(zai)航(hang)電總(zong)線數(shu)據采集功能中(zhong)，采用本方法來(lai)管理(li)機載(zai)(zai)航(hang)電總(zong)線的(de)狀態(tai)信息(xi)和遠程(cheng)獲取機載(zai)(zai)航(hang)電總(zong)線的(de)狀態(tai)信息(xi)。