【正文】 hin t he war rant y per iod, we all accessories uncondit ional war r ant y f or all equipment and r eplacem ent , all par ts f or all equipm ent (including all m achine part s) maintenance and par ts are f ree and pr ovide on sit e cleaning, t est equipm ent ser vices. Dur ing t he warr ant y period, all equipm ent r epair and m aint enance ser vices f or on sit e ser vices, t he r esult ing f ees ar e waived. Fr ee f or system expansion, upgrade related t echnical suppor t ser vices. 3) system warr ant y contact inf orm at ion t o pr ovide users wit h f r ee t echnical advice, det ailed answer t o any pr oblem in t he syst em, t o ask, answer s wil e det ail. I n t he users if unable t o solve t he pr oblem s by t hemselves, dir ectly by t elephone, f ax, I nt er , lett er, such as get ting in t ouch wit h m y pany ( which cals f or 24 hour service) , we wil r espond wit hin 4 hour s, consult ation wit h user s t o solve t he pr oblem. 2, ser vice r esponse t imes, we are mit ed t o the warr ant y period on t he oper ation of t he syst em on a r egular basis carr y out pr ehens ive inspect ions, f ound t hat the problem solving on the spot , 單相正弦波逆變電源 摘要 ： 本 單相正弦波逆變電源 的設(shè)計 ，以 12V 蓄電池作為輸入 ，輸出 為 36V、 50Hz 的 標(biāo)準(zhǔn)正弦波交流電。該電源很好的完成了各項(xiàng)指標(biāo)，輸入功率為 ，輸出功率為 ，效率達(dá)到了 93%，輸出標(biāo)準(zhǔn)的 50Hz 正弦波。 4 設(shè)計要 求 4 設(shè)計思路 4 方案論證與比較 5 系統(tǒng)組成 8 9 DCDC 變換器控制電路的設(shè)計 9 DCAC 電路的設(shè)計 10 SPWM 波的實(shí)現(xiàn) 11 保護(hù)電路的設(shè)計 12 空載保護(hù)電路的設(shè)計 14 電流檢測電路的設(shè)計 s sit e t o see and list en t o t he leadership pr oposal, and in accordance wit h t he act ual needs of t he pr oject , wit h r ef er ence t o t he r elevant int ernat ional st andards and nat ional st andards, bined wit h t he experience accum ulat ed by t he pany engaged in m ult iple pr oj ects, pr epare t he t echnol gy package. I f t he cont ents or any other aspect of t he pr ogr amm e has not detailed wher e we wele your valuable m ents. Second, t he design principles of t he pr oj ect design f olows t echnology advanced, f unctional, st able and cost saving principles. And considering const ruct ion, m aint enance and oper at ion, and f or f utur e developm ent , expansion, r econst r uc tion and ot her f act ors leave r oom f or expansion. Design elements of t he syst em is t he systematic, int egr ated and pr ehensive。 while, system of inst alat ion debugging, and sof t war e pr ogr amming and operation using and should simple, easy m aster, f or China condit ions and t his pr oj ect of eatures. Set t he num ber of advanced t echnol gy in a t he systems, r ef lect s t he cur rent level of t he lat est developm ent of put er and wor k t echnol gy, adapt ed t o t he r equir ement s of t he t imes. While t he system is t he syst em used f or various m anagem ent levels , it s f unct ions ar e configured t o pr ovide t he user wit h f or table, safe, f ast and convenient o 3. 1, t he int elligent building design standards (GB/t 503142020) , t he design st andar d for intelligent building syst ems engineering (DB32/1911998) 3. 3, the code f or engineer ing design of generic cabling syst em f or cit y residential buildings ( CECS/1192020) 3. 4, code f or design of buildings and campus cable syst ems engineering ( GB/T50312020) , t he code f or elect rical design of civil buildings ( J GJ / T1692) , t he code f or civil closed cir cuit m onit oring TV syst em engineer ing t echnology ( GB/5019894) 3. 7, the types of syst em ear thing and saf et y technical r equirements (GB14050 93) 3. 8, of t he secur ity engineering procedures and r equirements (GA/T7594) , t he r ules of secur it y engineering acceptance (GA/T308 2020) , t he indust rial design of TV system code (GBJ 115) 3. 11, t he Secur it y checks pr event ion syst em pass f or gr aphics ymbol ( GA/7494) , and f ir e linkage contr ol equipment Gener al t echnology condit ions ( GB 16806 1997) f our, and syst em f unction and features in system both advanced, and pr actical, and matur e, and r eliable, and do system open, and can extended sex god, both invest ment reasonable, and benefit s best of pur pose, border securit y alarm syst em on sit e equipment for concentr at ed m onit or ed, and cont rol and management, makes t hese equipment o secur it y, and r eliable, and ef ficient o run, M aximize intelligent management r ole to create a saf e, healt hy, f or table and pleasant , and to im prove t he ef ficiency of a good environment and save ener gy, and reduce maintenance personel. Accor ding t o the project39。s actual sit uat ion and fut ur e development rends, border secur ity alar m syst ems f or t he project design. 5. 1. principle of syst em and burglar alar m system f rom det ect or s, regional dir ectors, and t he alarm cont rol centre posed of three parts. I ts principles as in t he folowing char t: det ector s f or burglar alar m system is inside and outside the building in key areas, import ant places, protect ion, when t he probe t o ilegal invader s, the signal t ransmit t ed t o t he alarm cont rol: sound and light alar m, display address, about he person on duty aft er r eceiving t he alar m, t ake measures accor ding t o the situation, t o contr ol t he development of t he sit uat ion. Anti theft alarm syst em alar m f unction in addit ion t o t he above, there is linkage f unct ion. Such a