I-Evolution of Sirens kwi-Emergency Vehicles
Ukusuka kwiMvelaphi ukuya kwiTekhnoloji yanamhlanje, uhambo ngeMbali yeeSirens
Imvelaphi kunye ne-Early Evolution
The iisirens zokuqala kuba zithuthi umhla emva kwi I19 yekhulu leminyaka xa izandi ze-alam ziveliswa ikakhulu ziintsimbi okanye izixhobo zoomatshini. Injineli yombane yaseFransi Gustave Trouve wavelisa enye yeesiren zokuqala ngo-1886 ukubhengeza ukufika okuthe cwaka kwezikhephe zakhe zombane. Ngexesha KweMfazwe Yehlabathi II, zazisetyenziswa eBritani ukuba uphawu lohlaselo lomoya. Ezi nkqubo zakuqala ngamanye amaxesha zazinzima kwaye zixhomekeke kumoya oxinanisiweyo, zisenza ukuba zingasebenzi kwizithuthi.
Ixesha langoku leSirens
Kuyo yonke I20 yekhulu leminyaka, ii-sirens zavela ngokuphawulekayo, zihamba ukusuka iinkqubo zoomatshini ukuya kwangoku ngakumbi iinguqulelo ze-elektroniki. Iisirens zokuqala ze-elektroniki zaziswa kwi 1970s, ejolise ekuveliseni izandi ezihlabayo bamba ingqalelo kwaye uqinisekise ukhuseleko yabaphenduli kunye noluntu. Ezi siren ziye zakhula ngakumbi, zibandakanya izithethi, i-amplifiers, iijenereyitha zethoni kwiimeko ezahlukeneyo, kunye neebhokisi zokulawula ezivumela ulawulo olukhawulezayo noluguquguqukayo. Iisiren zangoku ukudibanisa amathoni ahlukeneyo kunye neenkqubo zokukhanyisa ngokukhawuleza ukunyusa ukusebenza kunye nefuthe.
I-Pneumatic kunye ne-Electronic Sirens
Iisirens zomoya sebenzisa iidiski ezijikelezayo ezinemingxuma (i-choppers) ukuphazamisa ukuhamba komoya, ukudala izandi ezitshintshanayo zomoya ocinezelweyo kunye nonqabileyo. Ezi nkqubo zinokutya amandla amaninzi kodwa zenziwe zasebenza ngakumbi ngokusetyenziswa komoya ocinezelweyo. Iisirens zombane, ngakolunye uhlangothi, sebenzisa iisekethe ezifana ne-oscillators, i-modulators, kunye ne-amplifiers ukudibanisa iithoni ezikhethiweyo, ezidlalwa ngezithethi zangaphandle. Ezi nkqubo zinokulinganisa izandi ze-sirens zoomatshini kwaye zihlala zisetyenziswa kunye neesiren ze-pneumatic.
I-Evolution of Emergency Vehicle Lighting
Ngokuhambelana nembali yeesiren, Ukukhanya kwesithuthi sikaxakeka nako kuye kwenzeka ngenguqu ebalulekileyo. Ekuqaleni, iimoto ezingxamisekileyo zazisebenzisa izibane ezibomvu ezifakwe ngaphambili okanye eluphahleni. Ngexesha leMfazwe Yehlabathi yesiBini eJamani, iblue blue yaziswa njengombala wezibane ezingxamisekileyo ngenxa yeempawu zayo zokusasazeka, okwenza ukuba ingabonakali kwinqwelomoya yotshaba. Namhlanje, ukukhanyisa isithuthi sikaxakeka yahluka kakhulu ngokusekelwe kwimithetho yendawo kwaye ihlala isetyenziswa ngokubambisana neenkqubo ze-siren ukunyusa ukusebenza kakuhle kunye nokubonelela ngezilumkiso ezibonakalayo nezivakalayo.
imithombo