CAN鎬荤嚎璐熻浇鐜囧繀闇灏忎簬30%鍚梍can鎬荤嚎璐熻浇鐜囧浣曡绠-鐜板満鎬荤嚎-閰峰痉缃 - CoDeSys杞欢鏁欑▼涓嬭浇,CoDeSys宸ユ帶璧勮闂ㄦ埛
HSC6490-cn涓浗鍒堕狅紝涓浗鑺瘇
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CAN鎬荤嚎璐熻浇鐜囧繀闇灏忎簬30%鍚梍can鎬荤嚎璐熻浇鐜囧浣曡绠

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  • TA鐨勬瘡鏃ュ績鎯
    鎿︽睏
    2019-8-13 14:13
  • 绛惧埌澶╂暟: 32 澶

    [LV.5]甯镐綇灞呮皯I

    鍙戣〃浜 2021-1-27 10:07:32 | 鏄剧ず鍏ㄩ儴妤煎眰 |闃呰妯″紡
    CAN鎬荤嚎璐熻浇鐜囧彧鏄竴涓畯瑙傜殑鍙傛暟锛屽凡缁忎笉鑳藉厖鍒嗙殑璇勪及鎬荤嚎鐨勬湁鏁堟у拰鍙墿灞曟с備竴鑸笟鍐呯殑瀵硅礋杞界巼鐨勫畾涔変负瀹為檯鏁版嵁浼犺緭閫熺巼鍜岀悊璁轰笂鑳借揪鍒扮殑鏁版嵁浼犺緭閫熺巼鐨勬瘮鍊硷紝鏈枃涓昏浠嬬粛浜哻an鎬荤嚎璐熻浇鐜囧浣曡绠楀強CAN鎬荤嚎璐熻浇鐜囧繀闇灏忎簬30%闂鐨勮В绛旓紝鍏蜂綋鐨勮窡闅忓皬缂栦竴璧锋潵浜嗚В涓涓嬨
    銆銆CAN鎬荤嚎璐熻浇鐜囧繀闇灏忎簬30%鍚
    CAN鎬荤嚎璐熻浇鐜囦笉涓瀹氳灏忎簬30%锛屽洜涓12骞寸殑鏃跺欒彶浜氱壒宸茬粡鍙互鍋氬埌70%鐨勮礋杞界巼涓嬩粛鐒惰兘澶熶繚璇佹甯搁氳锛屾墍浠ヨ繖涓30%鍙槸鏈浣抽夋嫨銆
    璐熻浇鐜囪秺楂橈紝浠h〃闇瑕佸彂閫佺殑鏁版嵁瓒婂锛岀浉瀵规潵璇翠綆浼樺厛绾ц妭鐐瑰彂鐢熼氳寤惰繜鐨勬鐜囪秺澶с
    鏍规嵁瀹為獙琛ㄦ槑锛岃礋杞界巼鍦30%鐨勬儏鍐典笅锛屼紭鍏堢骇楂樿妭鐐圭殑骞冲潎鎶ユ枃浼犺緭鏃堕棿鍜岀悊璁轰紶杈撴椂闂寸浉宸棤鍑狅紱鑰屼紭鍏堢骇浣庣殑瀛樺湪20%宸﹀彸鐨勫欢鏃讹紱褰撹礋杞界巼杈惧埌60%鐨勬儏鍐典笅锛屼紭鍏堢骇鏈楂樼殑鑺傜偣閮芥湁鑷冲皯25%鐨勫欢鏃讹紝浼樺厛绾ф渶浣庣殑寤舵椂杈惧埌浜4鍊嶏紝鏍规湰鏃犳硶婊¤冻瀹炴椂鎬э紱褰撴荤嚎鐨勫钩鍧囧埄鐢ㄧ巼杈惧埌70%浠ヤ笂鏃讹紝鎬荤嚎鐨勯氫俊灏嗙敤鍙兘鍑虹幇鎷ュ牭鐨勭幇璞★紝鏋佺鐨勬儏鍐典笅灏嗘湁鍙兘閫犳垚閿欒甯х殑鍑虹幇銆
    鍥犳锛岃礋杞界巼褰撶劧鏄秺浣庤秺濂斤紝瓒婅兘淇濊瘉瀹炴椂鎬э紝浣嗘槸璐熻浇鐜囧お浣庡氨鏃犳硶浼犺緭瓒冲鐨勬暟鎹紝杩欐槸CAN鐨勪竴涓棶棰橈紝鍦ㄦ暟鎹噺澶х殑鏃跺欐棤娉曚繚璇佸疄鏃舵с備竴鑸殑璇存硶鏄30%宸﹀彸鐨勮礋杞界巼鏄渶濂界殑銆
    銆銆CAN鎬荤嚎璐熻浇鐨勫師鐞嗗強璁$畻
    A. CAN鏍囧噯甯ф牸寮
    pIYBAFrwD86AAjUSAABRbZ6msU4116.jpg
    B.CAN鎵╁睍甯ф牸寮
    pIYBAFrwD9yAfqEmAABafbC2RPg723.jpg
    C.甯ч棿闂撮殧
    2749557-1P50G63550T8.jpg
    鍋囪
    Ui锛氬悇涓俊鎭抚鍗犵敤鎬荤嚎鐧惧垎姣
    L锛氫负鎶ユ枃鐨勬婚暱搴
    C锛氫负鎶ユ枃鐨勬荤嚎鍗犵敤鏃堕棿
    N锛氫负濉厖鐨勪綅鏁
    t锛氫负姣涢熺巼 锛 浜︾О娉㈢壒鐜 锛変笅鐨勪綅鏃堕棿
    鍒欐湁锛
    L = N + 8d + g + 13
    C = L * t
    Ui = C / T
    鐒惰屾荤嚎璐熻浇鐜囨槸鍚勪釜淇℃伅甯у崰鐢ㄦ荤嚎鐧惧垎姣斾箣鍜屻
    U = U1 + U2 + U3 + 銆傘傘傘傘
    g 涓 CAN 鎶ユ枃涓帶鍒朵綅鐨勬讳綅鏁 锛 鏍囧噯甯 g =34 锛 鎵╁睍甯 g = 54 锛
    g鐨勫彇鍊兼槸鍙彇浣嶅~鍏呴儴鍒嗛櫎鍘绘暟鎹锛
    13锛氭棤浣嶅~鍏呮 + 甯ч棿闂撮殧
    缃戠粶璐熻浇鐜囩畻娉曚緥瀛愶細
    pIYBAFrwD_GAfwNZAABhGZVA6ak739.jpg
    缃戠粶璐熻浇鐜囨槸 1s 鍐呯綉缁滄荤嚎浼犺緭鏁版嵁鎵鍗犲甫瀹界殑鐧惧垎鐜囥備互涓婂浘缃戠粶鐭╅樀琛ㄤ负渚嬶紝鍋囪鎬荤嚎閫熷害涓500Kbps锛岀綉缁滀腑鏈夊甯т俊鍙凤紝鎶婃瘡涓俊鍙峰抚鎵鍗犵殑璐熻浇鐜囩畻鍑烘潵锛岀浉鍔犲嵆寰楀埌鎬荤殑缃戠粶璐熻浇鐜囥侳BCM_1/FBCM_2杩欎袱甯х殑鎵鍗犵殑璐熻浇鐜囩畻娉曞涓嬶細
    璐熻浇鐜1 = 锛1000ms / 20ms锛 * 111 / 500000 = 0.0111 = 1.11%
    璐熻浇鐜2 = 锛1000ms / 10ms锛 * 111 / 500000 = 0.0222 = 2.22%
    鍏紡涓111涓 8瀛楄妭鐨勬暟鎹抚鍦ㄤ笉鑰冭檻濉厖浣嶇殑鎯呭喌涓嬬殑鎵鍚綅鏁般
    111 = 34 + 13 + 锛8 byte X 8bit锛 = 47 + 64
    涓嬮潰鎴戜滑鐪 TTCAN涓湁杩欎箞涓涓叕寮忥細
    2749557-1P50G63614535.jpg
    鎸夌収CAN鍗忚锛岀浉鍚岀數骞虫寔缁5浣嶏紝鍦ㄤ笅涓浣嶈鎻掑叆1浣嶄笌鍓5浣嶅弽鍨嬬殑鐢靛钩銆
    鍙煡锛氾紙34 + 8s锛/5 寰楀埌鐨勫~鍏呬綅鏁帮紝鎵浠ュ浜庝竴甯у畬鏁寸殑浣嶆暟锛屾垜浠彲浠ュ亣璁惧寘鍚笂闂撮殧浣嶏紝
    鍒欙細濉厖浣嶏細锛34 + 8s锛/5
    鏁版嵁浣嶏細8s
    鎶ユ枃鏍煎紡浣嶏細34 + 10 + 3 = 47

    +10
    涓嶈禐涓涓紵
    鎵撹祻榧撳姳涓涓嬶紒
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