{"id":34795,"date":"2019-10-31T22:00:25","date_gmt":"2019-10-31T19:00:25","guid":{"rendered":"https:\/\/prohoster.info\/blog\/shiny-i-protokoly-v-promyshlennoj-avtomatike-kak-vsyo-eto-rabotaet\/"},"modified":"2019-10-31T22:00:25","modified_gmt":"2019-10-31T19:00:25","slug":"shiny-i-protokoly-v-promyshlennoj-avtomatike-kak-vsyo-eto-rabotaet","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/shiny-i-protokoly-v-promyshlennoj-avtomatike-kak-vsyo-eto-rabotaet","title":{"rendered":"Bu\u015fonuri \u0219i protocoale \u00een automatizarea industrial\u0103: cum func\u021bioneaz\u0103 totul","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><img decoding=\"async\" alt=\"Bu\u015fonuri \u0219i protocoale \u00een automatizarea industrial\u0103: cum func\u021bioneaz\u0103 totul\" src=\"\/wp-content\/uploads\/2019\/05\/2072847391a081d49270ac70ee1fef88.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\nCu siguran\u021b\u0103 mul\u021bi dintre voi \u0219ti\u021bi sau chiar a\u021bi v\u0103zut cum sunt gestionate mari obiecte automatizate, de exemplu, o central\u0103 nuclear\u0103 sau o fabric\u0103 cu numeroase linii tehnologice: activitatea principal\u0103 se desf\u0103\u0219oar\u0103 adesea \u00eentr-o camer\u0103 mare, plin\u0103 de ecrane, lumini \u0219i panouri de control. Acest sistem de management este de obicei numit G\u015eU \u2014 panoul principal de control pentru supravegherea obiectului de produc\u021bie. <\/p>\n<p>Cu siguran\u021b\u0103 v-a\u021bi \u00eentrebat cum func\u021bioneaz\u0103 toate acestea din punct de vedere hardware \u0219i software, ce diferen\u021biaz\u0103 aceste sisteme de PC-urile personale obi\u0219nuite. \u00cen acest articol vom explora cum ajung diferitele date la G\u015eU, cum se dau comenzile echipamentelor, \u0219i ce este necesar pentru a gestiona o sta\u021bie de compresoare, o instala\u021bie de produc\u021bie a propanului, o linie de asamblare a automobilelor sau chiar o sta\u021bie de pompare a apelor uzate.<br \/>\n<noindex><a rel=\"nofollow\" name=\"habracut\"><\/a><\/noindex><\/p>\n<h2>Nivelul inferior sau magistrala de c\u00e2mp \u2014 de unde \u00eencepe totul <\/h2>\n<p>\nAceast\u0103 denumire vag\u0103 pentru neini\u021bia\u021bi este utilizat\u0103 c\u00e2nd trebuie descrise mijloacele de comunicare \u00eentre microcontrolere \u0219i echipamentele afiliate, de exemplu, modulele de intrare-ie\u0219ire sau dispozitivele de m\u0103surare. De obicei, acest canal de comunica\u021bie este numit \u201emagistrala de c\u00e2mp\u201d, deoarece r\u0103spunde de transmiterea datelor c\u0103tre controler provenite din \u201ec\u00e2mp\u201d. <\/p>\n<p>\u201eC\u00e2mp\u201d este un termen profesional profund care denot\u0103 faptul c\u0103 un anumit echipament (de exemplu, senzori sau actuatori), cu care interac\u021bioneaz\u0103 controlerul, se afl\u0103 undeva departe, afar\u0103, pe c\u00e2mp, sub cortina nop\u021bii. \u0218i nu conteaz\u0103 c\u0103 senzorul poate fi situat la jum\u0103tate de metru de controler \u0219i m\u0103soar\u0103, s\u0103 zicem, temperatura din dulapul automatiz\u0103rii, se consider\u0103 totu\u0219i c\u0103 se afl\u0103 \u201e\u00een c\u00e2mp\u201d. De cele mai multe ori, semnalele de la senzori, care ajung la modulele de intrare-ie\u0219ire, totu\u0219i parcurg distan\u021be de la zeci la sute de metri (\u0219i uneori chiar mai mult), colect\u00e2nd informa\u021bii de la loca\u021bii sau echipamente \u00eendep\u0103rtate. Tocmai de aceea, magistrala de schimb de date, pe care controlerul prime\u0219te valorile de la ace\u0219ti senzori, este de obicei numit\u0103 magistrala de c\u00e2mp sau mai rar magistrala de nivel inferior sau magistrala industrial\u0103.<\/p>\n<p><img decoding=\"async\" alt=\"Bu\u015fonuri \u0219i protocoale \u00een automatizarea industrial\u0103: cum func\u021bioneaz\u0103 totul\" src=\"\/wp-content\/uploads\/2019\/05\/68e8ebd331592769a56acd1e121a2c9f.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Schema general\u0103 de automatizare a unui obiect industrial<\/i> <\/p>\n<p>Astfel, semnalul electric de la senzor parcurge o anumit\u0103 distan\u021b\u0103 pe liniile de cablare (cel mai adesea pe un cablu de cupru obi\u0219nuit cu un anumit num\u0103r de fire), la care sunt conectate mai multe senzorii. Apoi, semnalul ajunge la modulul de procesare (modulul de intrare-ie\u0219ire), unde este transformat \u00een un limbaj digital pe \u00een\u021belesul controlerului. Ulterior, acest semnal ajunge prin magistrala de c\u00e2mp direct la controler, unde este procesat definitiv. Pe baza acestor semnale se construie\u0219te logica de func\u021bionare a microcontrolerului.<\/p>\n<h2>Nivelul superior: de la girland\u0103 la \u00eentreaga sta\u021bie de lucru<\/h2>\n<p>\nNivelul superior se refer\u0103 la tot ceea ce poate atinge un operator obi\u0219nuit, care gestioneaz\u0103 procesul tehnologic. \u00cen cel mai simplu caz, nivelul superior este reprezentat de un set de lumini \u0219i butoane. Luminile semnalizeaz\u0103 operatorului despre anumite evenimente care au loc \u00een sistem, iar butoanele sunt utilizate pentru a trimite comenzi controlerului. Un astfel de sistem este adesea numit \u201egirland\u0103\u201d sau \u201ebrad\u201d, deoarece arat\u0103 foarte asem\u0103n\u0103tor (a\u0219a cum poate fi observat \u00een fotografia de la \u00eenceputul articolului).<\/p>\n<p>Dac\u0103 operatorului \u00eei merge mai bine, ca nivel superior, va avea un panou de operator \u2014 un computer plat care, \u00eentr-un mod sau altul, prime\u0219te date pentru a fi afi\u0219ate de la controler \u0219i le afi\u0219eaz\u0103 pe ecran. Acest panou este de obicei montat pe dulapul de automatizare, astfel c\u0103 interac\u021bionarea cu acesta se face, de regul\u0103, st\u00e2nd, ceea ce cauzeaz\u0103 nepl\u0103ceri, plus c\u0103 calitatea \u0219i dimensiunea imaginii pe panourile de dimensiuni mici las\u0103 de dorit.<\/p>\n<p><img decoding=\"async\" alt=\"Bu\u015fonuri \u0219i protocoale \u00een automatizarea industrial\u0103: cum func\u021bioneaz\u0103 totul\" src=\"\/wp-content\/uploads\/2019\/05\/b2be65a58e7e7d90a481ad91cf6ee2ed.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<br \/>\n\u0218i, \u00een cele din urm\u0103, atrac\u021bia unui generozitate f\u0103r\u0103 precedent \u2014 sta\u021bia de lucru (sau chiar mai multe duplicate), care este un computer personal obi\u0219nuit.<\/p>\n<p>Echipamentele de nivel superior sunt obligate s\u0103 interac\u021bioneze \u00eentr-un fel cu microcontrolerul (altfel, de ce ar mai fi necesare?). Pentru o astfel de interac\u021biune, se folosesc protocoale de nivel superior \u0219i un mediu de transmisie, de exemplu, Ethernet sau UART. \u00cen cazul \u201ebradului\u201d, astfel de sofistic\u0103ri nu sunt, desigur, necesare, luminile se aprind folosind linii fizice obi\u0219nuite, f\u0103r\u0103 interfe\u021be \u0219i protocoale complicate.<\/p>\n<p>\u00cen general, acest nivel superior este mai pu\u021bin interesant dec\u00e2t bus-ul de c\u00e2mp, deoarece acest nivel superior ar putea s\u0103 nu existe deloc (din seria nu are ce s\u0103 vad\u0103 operatorul, controlerul se va descurca singur, \u0219tiind ce trebuie s\u0103 fac\u0103).<\/p>\n<h2>Protocolul de transfer de date \u201eantic\u201d: Modbus \u0219i HART<\/h2>\n<p>\nPu\u021bini \u0219tiu, dar \u00een a \u0219aptea zi a crea\u021biei lumii, Dumnezeu nu se odihnea, ci crea Modbus. Pe l\u00e2ng\u0103 protocolul HART, Modbus este, probabil, cel mai vechi protocol industrial de transfer de date, ap\u0103rut \u00eenc\u0103 din 1979.<\/p>\n<p>Ca mediu de transfer, ini\u021bial s-a folosit o interfa\u021b\u0103 serial\u0103, apoi Modbus a fost implementat peste TCP\/IP. Este un protocol sincron pe schema \u201emaster-slave\u201d (principal-subordonat), \u00een care se folose\u0219te principiul \u201ecerere-r\u0103spuns\u201d. Protocolul este destul de greu \u0219i lent, viteza de schimb depinde de caracteristicile receptorului \u0219i transmitterului, dar de obicei timpul de r\u0103spuns este de c\u00e2teva sute de milisecunde, mai ales \u00een implementarea prin interfa\u021b\u0103 serial\u0103. <\/p>\n<p>Mai mult, registrul de transfer de date Modbus este de 16 bi\u021bi, ceea ce impune imediat restric\u021bii asupra transferului tipurilor real \u0219i double. Acestea sunt transmise fie pe p\u0103r\u021bi, fie cu pierderi de precizie. De\u0219i Modbus este \u00eenc\u0103 utilizat pe scar\u0103 larg\u0103 \u00een cazurile \u00een care nu este necesar\u0103 o vitez\u0103 mare de schimb \u0219i pierderea datelor transmise nu este critic\u0103. Mul\u021bi produc\u0103tori de diferite dispozitive iubesc s\u0103 extind\u0103 protocolul Modbus \u00eentr-un mod exclusiv \u0219i foarte original, ad\u0103ug\u00e2nd func\u021bii netradi\u021bionale. Prin urmare, acest protocol are multe muta\u021bii \u0219i abateri de la norm\u0103, dar totu\u0219i tr\u0103ie\u0219te cu succes \u00een lumea modern\u0103.<br \/>\nProtocolul HART exist\u0103 de asemenea din anii '80, fiind un protocol industrial de schimb pe o linie de doi conductori a buclei de curent, \u00een care sunt conectate direct senzori de 4-20 mA \u0219i alte dispozitive care suport\u0103 protocolul HART. <\/p>\n<p>Pentru comutarea liniilor HART, sunt utilizate dispozitive speciale, numite modemuri HART. Exist\u0103 de asemenea convertoare care la ie\u0219ire ofer\u0103 utilizatorului deja, s\u0103 zicem, protocolul Modbus. <\/p>\n<p>HART este notabil deoarece, pe l\u00e2ng\u0103 semnalele analogice de senzori de 4-20 mA, transmite \u0219i un semnal digital al protocolului, ceea ce permite combinarea p\u0103r\u021bii digitale \u0219i analogice \u00eentr-o singur\u0103 linie de cablu. Modelele HART moderne se pot conecta la portul USB al controlerului, pot comunica prin Bluetooth sau prin metoda clasic\u0103 prin portul serial. Cu un deceniu \u00een urm\u0103, odat\u0103 cu Wi-Fi, a ap\u0103rut \u0219i standardul wireless WirelessHART, care func\u021bioneaz\u0103 \u00een banda ISM.<\/p>\n<h2>A doua genera\u021bie de protocoale sau nu exact autobuze industriale ISA, PCI(e) \u0219i VME. <\/h2>\n<p>\n\u00cen locul protocoalelor Modbus \u0219i HART au venit autobuze nu tocmai industriale, cum ar fi ISA (MicroPC, PC\/104) sau PCI\/PCIe (CompactPCI, CompactPCI Serial, StacPC), dar \u0219i VME. <\/p>\n<p>A \u00eenceput era calculatoarelor care dispuneau de un autobuz universar de transfer de date, la care se puteau conecta diverse pl\u0103ci (module) pentru procesarea unui semnal unificat. De obicei, \u00een acest caz, modulul procesor (calculatorul) este introdus \u00eentr-un a\u0219a-numit cadru, care asigur\u0103 interac\u021biunea pe autobuz cu alte dispozitive. Cadru, sau, cum \u00eei numesc adev\u0103ra\u021bii automatizatori, \u201ecrate\u201d, este completat cu pl\u0103ci necesare de intrare-ie\u0219ire: analogice, discrete, interfe\u021be etc., sau toate acestea sunt asamblate sub form\u0103 de sandwich f\u0103r\u0103 cadru \u2014 o plac\u0103 deasupra alteia. Dup\u0103 care aceast\u0103 diversitate pe autobuz (ISA, PCI etc.) schimb\u0103 date cu modulul procesor, care astfel prime\u0219te informa\u021bii de la senzori \u0219i realizeaz\u0103 o anumit\u0103 logic\u0103.<\/p>\n<p><img decoding=\"async\" alt=\"Bu\u015fonuri \u0219i protocoale \u00een automatizarea industrial\u0103: cum func\u021bioneaz\u0103 totul\" src=\"\/wp-content\/uploads\/2019\/05\/a9bfb3d74f817a758a7e7cea2a75513c.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Controlerul \u0219i modulele de intrare-ie\u0219ire \u00een cadrul PXI pe autobuzul PCI. Sursa: <noindex><a rel=\"nofollow\" href=\"http:\/\/www.ni.com\/ko-kr\/innovations\/white-papers\/14\/introduction-to-the-pxi-architecture.html\">National Instruments Corporation<\/a><\/noindex><\/i><\/p>\n<p>Nu ar fi nimic cu aceste autobuze ISA, PCI(e) \u0219i VME, mai ales pentru acele vremuri: \u0219i viteza de transfer nu este dezam\u0103gitoare, iar componentele sistemului sunt plasate \u00eentr-un cadru unic, compact \u0219i convenabil, schimbarea rapid\u0103 a pl\u0103cilor de intrare-ie\u0219ire poate s\u0103 nu existe, dar deocamdat\u0103 nu este foarte dorit\u0103. <\/p>\n<p>Dar exist\u0103 o lingur\u0103 de doar \u0219i nu una. Construirea unui sistem distribuit \u00een aceast\u0103 configura\u021bie este destul de complicat\u0103, bus-ul de schimb este local, trebuie g\u0103site solu\u021bii pentru schimbul de date cu celelalte noduri subordonate sau egale, acela\u0219i Modbus peste TCP\/IP sau alt protocol, \u00een general, confortul este destul de redus. \u0218i al doilea aspect nepl\u0103cut: pl\u0103cile de intrare-ie\u0219ire de obicei a\u0219teapt\u0103 un semnal uniformizat la intrare, iar izolarea galvanic\u0103 cu echipamentele de c\u00e2mp nu exist\u0103, a\u0219a c\u0103 trebuie s\u0103 construie\u0219ti o structur\u0103 din diverse module de conversie \u0219i scheme intermediare, ceea ce complic\u0103 foarte mult baza de componente.<\/p>\n<p><img decoding=\"async\" alt=\"Bu\u015fonuri \u0219i protocoale \u00een automatizarea industrial\u0103: cum func\u021bioneaz\u0103 totul\" src=\"\/wp-content\/uploads\/2019\/05\/d30ec8cb4bfdf5de396c4cc9e8341e35.png\" style=\"display:block;margin: 0 auto;\" \/><br \/>\n<i>Module intermediare de conversie a semnalelor cu izolatie galvanic\u0103. Sursa: <noindex><a rel=\"nofollow\" href=\"https:\/\/www.dataforth.com\/signal-conditioning.aspx\">DataForth Corporation<\/a><\/noindex><\/i><\/p>\n<p>\"\u0218i ce se \u00eent\u00e2mpl\u0103 cu protocolul de comunicare pe bus-ul industrial?\" \u2014 ve\u021bi \u00eentreba. Ei bine, nimic. Nu exist\u0103 \u00een aceast\u0103 implementare. Pe liniile de cablu, semnalul ajunge de la senzori la conversorii de semnal, conversorii emit tensiune pe o plac\u0103 de intrare-ie\u0219ire discret\u0103 sau analogic\u0103, iar datele de pe plac\u0103 sunt citite prin porturile de intrare\/ie\u0219ire, prin intermediul sistemului de operare. \u0218i f\u0103r\u0103 protocoale specializate.<\/p>\n<h2>Cum func\u021bioneaz\u0103 bus-urile industriale moderne \u0219i protocoalele<\/h2>\n<p>\nCe urmeaz\u0103 acum? P\u00e2n\u0103 \u00een prezent, ideologia clasic\u0103 de construirea sistemelor automatizate s-a schimbat pu\u021bin. Au jucat un rol o mul\u021bime de factori, de la faptul c\u0103 trebuie s\u0103 fie convenabil s\u0103 automatizezi, p\u00e2n\u0103 la tendin\u021ba spre sisteme automatizate distribuite cu noduri \u00eendep\u0103rtate unul de altul.<\/p>\n<p>Probabil c\u0103 putem spune c\u0103 exist\u0103 dou\u0103 concep\u021bii principale pentru construirea sistemelor de automatizare \u00een prezent: sisteme automatizate localizate \u0219i sisteme distribuite.<\/p>\n<p>\u00cen cazul sistemelor localizate, unde colectarea datelor \u0219i managementul sunt centralizate \u00eentr-un singur loc specific, este cerut\u0103 conceptul unui set de module de intrare-ie\u0219ire, interconectate printr-o magistral\u0103 rapid\u0103 comun\u0103, inclusiv un controler cu propriul protocol de comunicare. De obicei, modulele de intrare-ie\u0219ire includ \u0219i un convertor de semnal \u0219i izola\u021bie galvanic\u0103 (de\u0219i, desigur, nu \u00eentotdeauna). Asta \u00eenseamn\u0103 c\u0103 utilizatorul final trebuie s\u0103 \u00een\u021beleag\u0103 ce tipuri de senzori \u0219i mecanisme vor fi prezente \u00een sistemul automatizat, s\u0103 numere num\u0103rul necesar de module de intrare-ie\u0219ire pentru diferite tipuri de semnale \u0219i s\u0103 le conecteze \u00eentr-o linie comun\u0103 cu controlerul. \u00cen acest caz, de obicei, fiecare produc\u0103tor utilizeaz\u0103 protocolul s\u0103u preferat de comunicare \u00eentre modulele de intrare-ie\u0219ire \u0219i controler, iar variantele pot fi numeroase.<\/p>\n<p>\u00cen cazul sistemelor distribuite, tot ceea ce este valabil pentru sistemele localizate este adev\u0103rat, cu excep\u021bia faptului c\u0103 este important ca componentele individuale, de exemplu, un set de module de intrare-ie\u0219ire plus un dispozitiv de colectare \u0219i transmitere a informa\u021biilor \u2014 un microcontroler nu foarte inteligent, situat undeva \u00een o cabin\u0103 \u00een c\u00e2mp, l\u00e2ng\u0103 un robinet care opre\u0219te petrolul \u2014 s\u0103 poat\u0103 interac\u021biona cu noduri similare \u0219i cu controlerul principal pe distan\u021be mari, cu o vitez\u0103 de schimb eficient\u0103. <\/p>\n<p>Cum aleg dezvoltatorii protocolul pentru proiectul lor? Toate protocoalele moderne de comunicare ofer\u0103 o vitez\u0103 destul de bun\u0103, astfel c\u0103, adesea, alegerea unui anumit produc\u0103tor nu se bazeaz\u0103 pe viteza de comunicare prin acea magistral\u0103 industrial\u0103. Implementarea protocolului \u00een sine nu este nici ea foarte important\u0103, deoarece, din perspectiva dezvoltatorului de sistem, va fi oricum o cutie neagr\u0103 care asigur\u0103 o anumit\u0103 structur\u0103 interioar\u0103 de comunicare \u0219i nu este destinat interven\u021biei externe. Cel mai adesea, se acord\u0103 aten\u021bie caracteristicilor practice: performan\u021ba calculatoarelor, comoditatea aplic\u0103rii concep\u021biei produc\u0103torului la sarcina propus\u0103, disponibilitatea tipurilor necesare de module de intrare-ie\u0219ire, posibilitatea de \u00eenlocuire la cald a modulelor f\u0103r\u0103 \u00eentreruperea magistralei etc.<\/p>\n<p>Furnizorii populari de echipamente ofer\u0103 propriile implement\u0103ri ale protocoalelor industriale: de exemplu, cunoscuta companie Siemens dezvolt\u0103 seria de protocoale Profinet \u0219i Profibus, compania B&amp;R \u2014 protocolul Powerlink, iar Rockwell Automation \u2014 protocolul EtherNet\/IP. O solu\u021bie local\u0103 \u00een aceast\u0103 list\u0103 de exemple este versiunea protocolului FBUS de la compania rus\u0103 Fastwel. <\/p>\n<p>Exist\u0103 \u0219i solu\u021bii mai universale, care nu sunt legate de un produc\u0103tor specific, cum ar fi EtherCAT \u0219i CAN. Vom analiza \u00een detaliu aceste protocoale \u00een continuarea articolului \u0219i vom stabili care dintre ele se potrivesc cel mai bine aplica\u021biilor specifice: industriei auto \u0219i aerospa\u021biale, produc\u021biei de electronic\u0103, sistemelor de pozi\u021bionare \u0219i roboticii. R\u0103m\u00e2ne\u021bi conecta\u021bi!<br \/>\n<br \/>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/habr.com\/ru\/post\/454156\/\">habr.com<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041d\u0430\u0432\u0435\u0440\u043d\u044f\u043a\u0430 \u043c\u043d\u043e\u0433\u0438\u0435 \u0438 \u0432\u0430\u0441 \u0437\u043d\u0430\u044e\u0442 \u0438\u043b\u0438 \u0434\u0430\u0436\u0435 \u0432\u0438\u0434\u0435\u043b\u0438, \u043a\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0431\u043e\u043b\u044c\u0448\u0438\u0435 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0435 \u043e\u0431\u044a\u0435\u043a\u0442\u044b, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0430\u0442\u043e\u043c\u043d\u0430\u044f \u0441\u0442\u0430\u043d\u0446\u0438\u044f \u0438\u043b\u0438 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\u0449\u0438\u0442 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043b\u044f \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u044f \u0437\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u043c \u043e\u0431\u044a\u0435\u043a\u0442\u043e\u043c. \u041d\u0430\u0432\u0435\u0440\u043d\u044f\u043a\u0430 \u0432\u0430\u043c \u0431\u044b\u043b\u043e \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u043e, [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":26217,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-34795","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" 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