{"id":6008,"date":"2026-02-03T15:40:53","date_gmt":"2026-02-03T07:40:53","guid":{"rendered":"https:\/\/www.key-iot.com\/?p=6008"},"modified":"2026-02-03T15:40:53","modified_gmt":"2026-02-03T07:40:53","slug":"reading-vehicle-data-through-can-bus-practical-experience-with-vehicle-gateways","status":"publish","type":"post","link":"https:\/\/www.key-iot.com\/zh_tw\/blog\/reading-vehicle-data-through-can-bus-practical-experience-with-vehicle-gateways\/","title":{"rendered":"\u900f\u904e CAN \u532f\u6d41\u6392\u8b80\u53d6\u8eca\u8f1b\u8cc7\u6599\uff1a\u8eca\u8f1b\u9598\u9053\u7684\u5be6\u969b\u7d93\u9a57"},"content":{"rendered":"

\"db2c83dc83eaff3d8e4b985838952320\"<\/p>\n

 <\/p>\n

\u53bb\u5e74\uff0c\u5728\u70ba\u4e00\u5bb6\u7269\u6d41\u516c\u53f8\u5efa\u7acb\u8eca\u968a\u7ba1\u7406\u7cfb\u7d71\u6642\uff0c\u5ba2\u6236\u5e0c\u671b\u80fd\u5373\u6642\u76e3\u63a7\u6bcf\u8f1b\u5361\u8eca\u7684\u6cb9\u8017\u3001\u5f15\u64ce\u8f49\u901f\u548c\u51b7\u537b\u5291\u6eab\u5ea6\u3002\u4ed6\u5011\u4e0d\u53ea\u60f3\u8981\u5c07\u8cc7\u6599\u5132\u5b58\u5728\u672c\u6a5f\uff0c\u9084\u9700\u8981\u5c07\u6240\u6709\u8cc7\u6599\u4e32\u6d41\u5230\u96f2\u7aef\u5e73\u53f0\uff0c\u4ee5\u4fbf\u8abf\u5ea6\u54e1\u53ef\u4ee5\u76e3\u63a7\u8eca\u8f1b\u72c0\u614b\u3002.<\/p>\n

\u807d\u8d77\u4f86\u5f88\u7c21\u55ae\u3002\u4f46\u7576\u6211\u5011\u958b\u59cb\u64cd\u4f5c\u5f8c\uff0c\u5f9e\u8eca\u8f1b\u5167\u90e8\u53d6\u5f97\u8cc7\u6599\u7684\u904e\u7a0b\u537b\u6bd4\u9810\u671f\u8907\u96dc\u5f97\u591a\u3002\u6240\u6709\u8eca\u8f1b\u8cc7\u8a0a\u90fd\u662f\u900f\u904e CAN \u532f\u6d41\u6392\u50b3\u9001\uff0c\u4f46\u4e0d\u540c\u8eca\u6b3e\u7684\u8a0a\u606f\u683c\u5f0f\u5dee\u7570\u5f88\u5927\u3002\u8b80\u53d6\u4e00\u6c7d\u5361\u8eca\u8207\u6771\u98a8\u5361\u8eca\u7684\u5f15\u64ce\u8f49\u901f\uff0c\u610f\u5473\u8457\u8981\u8655\u7406\u5b8c\u5168\u4e0d\u540c\u7684 CAN \u8a0a\u606f ID\u3001\u8cc7\u6599\u6b04\u4f4d\u4f4d\u7f6e\u548c\u8f49\u63db\u56e0\u5b50\u3002.<\/p>\n

\u6211\u5011\u6700\u7d42\u4f7f\u7528\u96d9 5G \u8eca\u7528\u9598\u9053\u5668\u4f86\u89e3\u6c7a\u9019\u500b\u554f\u984c\u3002\u9598\u9053\u5668\u900f\u904e CAN \u4ecb\u9762\u9023\u63a5\u81f3\u8eca\u8f1b\u532f\u6d41\u6392\uff0c\u89e3\u6790\u6240\u6709\u8a0a\u606f\uff0c\u7136\u5f8c\u900f\u904e 5G \u7db2\u8def\u5c07\u8cc7\u6599\u4e0a\u50b3\u81f3\u96f2\u7aef\u3002\u6574\u500b\u5c08\u6848\u8b93\u6211\u6df1\u6df1\u9ad4\u6703\u5230\u8eca\u8f1b\u9598\u9053\u5668\u548c CAN \u532f\u6d41\u6392\u9700\u8981\u5982\u4f55\u5354\u540c\u904b\u4f5c\u3002.<\/p>\n

CAN Bus \u5728\u8eca\u8f1b\u4e2d\u7684\u4f5c\u7528<\/h2>\n

\u6211\u5011\u5148\u4f86\u770b\u770b CAN \u532f\u6d41\u6392\u5be6\u969b\u4e0a\u662f\u4ec0\u9ebc\u3002CAN \u662f Controller Area Network\uff08\u63a7\u5236\u5668\u5340\u57df\u7db2\u8def\uff09\u7684\u7e2e\u5beb\u3002\u535a\u4e16\u65e9\u5728 1980 \u5e74\u4ee3\u5c31\u8a2d\u8a08\u4e86\u9019\u7a2e\u901a\u8a0a\u532f\u6d41\u6392\u4f9b\u6c7d\u8eca\u4f7f\u7528\u3002.<\/p>\n

\u70ba\u4ec0\u9ebc\u6211\u5011\u9700\u8981 CAN \u532f\u6d41\u6392\uff1f\u73fe\u4ee3\u8eca\u8f1b\u5305\u542b\u6578\u5341\u751a\u81f3\u6578\u767e\u500b\u96fb\u5b50\u63a7\u5236\u55ae\u5143\u3002\u5f15\u64ce ECU\u3001\u8b8a\u901f\u7bb1 ECU\u3001ABS ECU\u3001\u5100\u9336\u677f ECU\u3001\u8eca\u8eab\u63a7\u5236 ECU\uff0c\u4e0d\u52dd\u679a\u8209\u3002\u9019\u4e9b ECU \u9700\u8981\u9032\u884c\u901a\u8a0a\u3002\u5982\u679c\u60a8\u5728\u6bcf\u5c0d ECU \u4e4b\u9593\u90fd\u92ea\u8a2d\u7368\u7acb\u7684\u96fb\u7dda\uff0c\u90a3\u9ebc\u7dda\u675f\u5c07\u6703\u662f\u4e00\u5834\u60e1\u5922\u3002.<\/p>\n

CAN \u532f\u6d41\u6392\u5c07\u6240\u6709 ECU \u9023\u63a5\u5230\u5171\u7528\u7684\u532f\u6d41\u6392\u3002\u5c07\u5176\u60f3\u50cf\u6210\u4e00\u689d\u5730\u9435\u7dda - \u6240\u6709\u8eca\u7ad9\u90fd\u4f4d\u65bc\u540c\u4e00\u689d\u8def\u7dda\u4e0a\u3002\u4efb\u4f55 ECU \u90fd\u53ef\u4ee5\u50b3\u9001\u8a0a\u606f\u7d66\u6240\u6709\u5176\u4ed6 ECU \u63a5\u6536\u3002\u6bcf\u500b ECU \u90fd\u6703\u9078\u64c7\u6027\u5730\u8655\u7406\u8207\u5176\u529f\u80fd\u76f8\u95dc\u7684\u8a0a\u606f\u3002.<\/p>\n

\u5546\u7528\u8eca\u8f1b\u901a\u5e38\u6703\u904b\u884c 2-3 \u500b\u7368\u7acb\u7684 CAN \u532f\u6d41\u6392\u3002\u52d5\u529b\u7e3d\u6210 CAN \u9023\u63a5\u5f15\u64ce\u3001\u8b8a\u901f\u7bb1\u3001ABS \u53ca\u5176\u4ed6\u52d5\u529b\u7e3d\u6210 ECU\uff0c\u901a\u5e38\u4ee5 500 kbps \u6216 250 kbps \u7684\u901f\u5ea6\u904b\u4f5c\u3002\u8eca\u8eab CAN \u7528\u65bc\u8655\u7406\u8eca\u71c8\u3001\u8eca\u9396\u3001\u6c23\u5019\u63a7\u5236\u548c\u8212\u9069\u7cfb\u7d71\uff0c\u901a\u5e38\u4ee5 125 kbps \u7684\u901f\u5ea6\u904b\u884c\u3002\u4e5f\u53ef\u80fd\u6709\u5c08\u7528\u7684\u8a3a\u65b7 CAN \u532f\u6d41\u6392\u3002.<\/p>\n

\u8eca\u8f1b\u9598\u9053\u5668\u9700\u8981\u63a5\u5165\u9019\u4e9b CAN \u532f\u6d41\u6392\u4f86\u8b80\u53d6\u8cc7\u6599\u3002\u4ee5 SV910 \u70ba\u4f8b - \u5b83\u914d\u5099 3 \u500b CAN \u9023\u63a5\u57e0\uff0c\u53ef\u540c\u6642\u9023\u63a5\u5230\u591a\u500b\u8eca\u8f1b CAN \u532f\u6d41\u6392\u3002.<\/p>\n

\u8b80\u53d6 CAN \u8cc7\u6599\u7684\u904e\u7a0b<\/h2>\n

 <\/p>\n

\"eb74286b34280d8de3302dac742a76ee\"<\/p>\n

 <\/p>\n

\u7a76\u7adf\u5982\u4f55\u8b80\u53d6\u9019\u4e9b\u8cc7\u6599\uff1f\u8b93\u6211\u5011\u4ee5\u8b80\u53d6\u5f15\u64ce\u8f49\u901f\u70ba\u4f8b\u3002.<\/p>\n

\u7b2c\u4e00\u6b65\u662f\u7269\u7406\u9023\u63a5<\/strong>. .\u5c07\u7db2\u95dc\u7684 CAN \u4ecb\u9762\u9023\u63a5\u5230\u8eca\u8f1b\u7684 OBD \u8a3a\u65b7\u57e0\u6216\u76f4\u63a5\u9023\u63a5\u5230 CAN \u532f\u6d41\u6392\u3002\u5546\u7528\u8eca\u8f1b\u4e00\u822c\u90fd\u6709\u6a19\u6e96\u7684 OBD \u9023\u63a5\u57e0\uff0c\u901a\u5e38\u4f4d\u65bc\u5100\u8868\u677f\u4e0b\u65b9\u6216\u99d5\u99db\u5ea7\u65c1\u908a\u3002\u9023\u63a5\u5668\u70ba\u68af\u5f62\uff0c\u6709 16 \u500b\u63a5\u8173\u3002.<\/p>\n

CAN \u532f\u6d41\u6392\u4f7f\u7528\u5169\u689d\u7dda\u7684\u5dee\u52d5\u4fe1\u865f\uff1aCAN_H \u548c CAN_L\u3002\u5728 OBD \u9023\u63a5\u5668\u4e0a\uff0c\u91dd\u8173 6 \u662f CAN_H\uff0c\u91dd\u8173 14 \u662f CAN_L\u3002\u9598\u9053\u5668\u7684 CAN \u4ecb\u9762\u4e5f\u6709\u76f8\u5c0d\u61c9\u7684\u63a5\u7dda - \u53ea\u8981\u5c07\u5b83\u5011\u914d\u5c0d\u5373\u53ef\u3002\u91cd\u8981\u6ce8\u610f\u4e8b\u9805\uff1aCAN \u532f\u6d41\u6392\u672b\u7aef\u9700\u8981 120 \u6b50\u59c6\u7684\u7d42\u7aef\u96fb\u963b\uff0c\u4ee5\u9632\u6b62\u8a0a\u865f\u53cd\u5c04\u3002\u6709\u4e9b\u9598\u9053\u5668\u5167\u90e8\u6574\u5408\u4e86\u7aef\u63a5\u96fb\u963b\uff0c\u53ef\u900f\u904e\u8edf\u9ad4\u8a2d\u5b9a\u3002.<\/p>\n

\u7b2c\u4e8c\u6b65\u662f\u8a2d\u5b9a\u6ce2\u7279\u7387<\/strong>. .CAN \u532f\u6d41\u6392\u901a\u8a0a\u901f\u5ea6\u5fc5\u9808\u5339\u914d\uff0c\u5426\u5247\u60a8\u5c07\u7121\u6cd5\u63a5\u6536\u4efb\u4f55\u8cc7\u6599\u3002\u5546\u7528\u8eca\u52d5\u529b\u7e3d\u6210 CAN \u901a\u8a0a\u901f\u5ea6\u901a\u5e38\u70ba 250 kbps \u6216 500 kbps - \u60a8\u9700\u8981\u5148\u9a57\u8b49\u3002\u67e5\u770b\u8eca\u8f1b\u7dad\u4fee\u624b\u518a\u6216\u4f7f\u7528\u5c08\u696d CAN \u5206\u6790\u5100\u9032\u884c\u6e2c\u8a66\u3002.<\/p>\n

\u5c07\u7db2\u95dc\u7684 CAN \u4ecb\u9762\u8a2d\u5b9a\u70ba\u76f8\u540c\u7684\u9b91\u7387\u3002SV910 \u7b49\u9598\u9053\u5668\u652f\u63f4\u591a\u7a2e\u9b91\u7387\uff0c\u53ef\u900f\u904e\u7d44\u614b\u6a94\u6848\u6216\u7ba1\u7406\u4ecb\u9762\u8abf\u6574\u3002.<\/p>\n

\u7b2c\u4e09\u6b65\u662f\u76e3\u63a7\u548c\u89e3\u6790 CAN \u8a0a\u606f<\/strong>. .CAN \u532f\u6d41\u6392\u4ee5\u8a0a\u6846\u7684\u65b9\u5f0f\u50b3\u8f38\u8cc7\u6599\u3002\u6bcf\u500b\u8a0a\u6846\u5305\u542b\u5e7e\u500b\u90e8\u5206\uff1a\u8a0a\u606f ID\u3001\u8cc7\u6599\u9577\u5ea6\u3001\u8cc7\u6599\u5167\u5bb9\u3001\u6821\u9a57\u548c\u3002.<\/p>\n

\u8a0a\u606f ID \u662f\u8b58\u5225\u6bcf\u500b\u8a0a\u606f\u5167\u5bb9\u7684\u95dc\u9375\u3002\u5c0d\u65bc\u5f15\u64ce\u8f49\u901f\uff0cGB\/T 27930 \u548c SAE J1939 \u7b49\u6a19\u6e96\u5b9a\u7fa9\u4e86 ID\u3002J1939 \u5e38\u7528\u65bc\u5546\u7528\u8eca\u8f1b - \u5f15\u64ce\u8f49\u901f\u4f7f\u7528 ID 0x0CF00400\uff0c\u8cc7\u6599\u4f4d\u65bc\u7b2c 4 \u548c\u7b2c 5 \u4f4d\u5143\u7d44\u3002.<\/p>\n

\u9598\u9053\u5668\u6301\u7e8c\u76e3\u63a7 CAN \u532f\u6d41\u6392\uff0c\u64f7\u53d6\u5177\u6709\u7279\u5b9a ID \u7684\u8a0a\u6846\uff0c\u7136\u5f8c\u5f9e\u8cc7\u6599\u4f4d\u5143\u7d44\u4e2d\u62bd\u53d6 RPM \u503c\u3002\u63d0\u53d6\u7684\u503c\u662f\u539f\u59cb\u8cc7\u6599\uff0c\u9700\u8981\u4f7f\u7528\u516c\u5f0f\u8f49\u63db\u70ba\u5be6\u969b RPM\u3002\u5728 J1939 \u6a19\u6e96\u4e2d\uff0c\u5f15\u64ce\u8f49\u901f\u89e3\u6790\u5ea6\u70ba 0.125 rpm\/bit\uff0c\u56e0\u6b64\u539f\u59cb\u503c\u4e58\u4ee5 0.125 \u5373\u70ba\u771f\u6b63\u7684\u8f49\u901f\u3002.<\/p>\n

\u7b2c\u56db\u6b65\u662f\u6253\u5305\u548c\u4e0a\u50b3\u8cc7\u6599<\/strong>. .\u89e3\u6790 RPM \u503c\u5f8c\uff0c\u9598\u9053\u6703\u5c07\u5176\u5305\u88dd\u6210\u9069\u7576\u7684\u683c\u5f0f\uff0c\u4ee5\u4fbf\u900f\u904e 5G \u7db2\u8def\u4e0a\u50b3\u81f3\u96f2\u7aef\u3002\u5e38\u898b\u683c\u5f0f\u5305\u62ec JSON\u3001Protobuf \u548c MQTT \u8a0a\u606f\u3002.<\/p>\n

\u4e0a\u50b3\u983b\u7387\u8996\u9700\u6c42\u800c\u5b9a\u3002\u5373\u6642\u76e3\u63a7\u53ef\u80fd\u9700\u8981\u6bcf\u79d2\u66f4\u65b0\u4e00\u6b21\uff0c\u800c\u4e00\u822c\u8eca\u968a\u7ba1\u7406\u5247\u53ef\u80fd\u9700\u8981\u6bcf 10 \u6216 30 \u79d2\u66f4\u65b0\u4e00\u6b21\u3002\u66f4\u9ad8\u7684\u983b\u7387\u610f\u5473\u8457\u66f4\u9ad8\u7684\u8cc7\u6599\u6210\u672c\u3002.<\/p>\n

\u4e0d\u540c\u8eca\u578b\u7684\u6311\u6230<\/h2>\n

 <\/p>\n

\"bd701919857254e4a166a9dbd40f32db\"<\/p>\n

\u7406\u8ad6\u4e0a\u807d\u8d77\u4f86\u5f88\u7c21\u55ae\u3002\u73fe\u5be6\u662f\uff0c\u9069\u61c9\u4e0d\u540c\u7684\u8eca\u8f1b\u578b\u865f\u6700\u4ee4\u4eba\u982d\u75db\u3002.<\/p>\n

\u570b\u5bb6\u6a19\u6e96 GB\/T 32960 \u5b9a\u7fa9\u4e86\u65b0\u80fd\u6e90\u6c7d\u8eca\u7684\u8cc7\u6599\u683c\u5f0f\uff0c\u4f46\u50c5\u6db5\u84cb\u96fb\u52d5\u6c7d\u8eca\u3002\u50b3\u7d71\u71c3\u6cb9\u52d5\u529b\u5546\u7528\u8eca\u5927\u591a\u9075\u5faa SAE J1939 \u6a19\u6e96\uff0c\u4f46\u5177\u9ad4\u5be6\u65bd\u4ecd\u6709\u5dee\u7570\u3002.<\/p>\n

\u66f4\u68d8\u624b\u7684\u662f\uff0c\u8a31\u591a\u6c7d\u8eca\u88fd\u9020\u5546\u4f7f\u7528\u6a19\u6e96\u5b9a\u7fa9\u4ee5\u5916\u7684\u5c08\u5c6c CAN \u8a0a\u606f\u3002\u6709\u4e9b\u54c1\u724c\u5c07\u6545\u969c\u4ee3\u78bc\u548c\u7dad\u4fee\u63d0\u9192\u653e\u5728\u79c1\u4eba\u8a0a\u606f\u4e2d\uff0c\u4f46\u683c\u5f0f\u537b\u6c92\u6709\u8aaa\u660e\u3002\u8b80\u53d6\u9019\u4e9b\u8cc7\u6599\u9700\u8981\u9006\u5411\u5de5\u7a0b\u6216\u5f9e\u6c7d\u8eca\u88fd\u9020\u5546\u53d6\u5f97\u6280\u8853\u6587\u4ef6\u3002.<\/p>\n

\u5728\u5c08\u6848\u671f\u9593\uff0c\u6211\u5011\u6703\u91dd\u5c0d\u6bcf\u7a2e\u8eca\u8f1b\u578b\u865f\u9032\u884c\u500b\u5225\u8abf\u6574\u3002\u9996\u5148\u6536\u96c6\u8a72\u578b\u865f\u7684 CAN \u901a\u8a0a\u5354\u5b9a\u6587\u4ef6\u3002\u5982\u679c\u6c92\u6709\u6587\u4ef6\uff0c\u5247\u4f7f\u7528 CAN \u5206\u6790\u5100\u8a18\u9304\u7e3d\u7dda\u8cc7\u6599\uff0c\u4e26\u624b\u52d5\u5206\u6790\u8a0a\u606f\u683c\u5f0f\u3002\u7136\u5f8c\u5728\u9598\u9053\u5668\u4e2d\u8a2d\u5b9a\u76f8\u61c9\u7684\u89e3\u6790\u898f\u5247\u3002.<\/p>\n

SV910 \u7b49\u9598\u9053\u5668\u652f\u63f4\u5f48\u6027\u914d\u7f6e\u3002\u60a8\u53ef\u4ee5\u5b9a\u7fa9\u81ea\u8a02\u7684\u89e3\u6790\u898f\u5247\uff0c\u6307\u5b9a\u8a0a\u606f ID \u4e2d\u7684\u54ea\u4e9b\u4f4d\u5143\u7d44\u4ee3\u8868\u54ea\u4e9b\u8cc7\u6599\uff0c\u4ee5\u53ca\u8981\u61c9\u7528\u54ea\u4e9b\u8f49\u63db\u516c\u5f0f\u3002\u4e0d\u540c\u7684\u8eca\u8f1b\u578b\u865f\u53ea\u9700\u8981\u4e0d\u540c\u7684\u7d44\u614b\u6a94\u6848\uff0c\u4e0d\u9700\u8981\u4fee\u6539\u7a0b\u5f0f\u78bc\u3002.<\/p>\n

\u6211\u5011\u5efa\u7acb\u4e86\u4e00\u500b\u8eca\u8f1b\u578b\u865f\u8cc7\u6599\u5eab\uff0c\u5132\u5b58\u4e0d\u540c\u54c1\u724c\u548c\u578b\u865f\u7684 CAN \u901a\u8a0a\u5354\u5b9a\u914d\u7f6e\u3002\u65b0\u5c08\u6848\u6703\u5148\u6aa2\u67e5\u914d\u7f6e\u662f\u5426\u5df2\u7d93\u5b58\u5728\u3002\u5982\u679c\u4e0d\u5b58\u5728\uff0c\u6211\u5011\u6703\u9032\u884c\u4e00\u6b21\u8abf\u6574\uff0c\u7136\u5f8c\u5c07\u5176\u52a0\u5165\u8cc7\u6599\u5eab\u3002\u8a72\u8cc7\u6599\u5eab\u73fe\u5728\u64c1\u6709\u56db\u4e94\u5341\u7a2e\u8eca\u8f1b\u578b\u865f\u7684\u914d\u7f6e\u3002.<\/p>\n

\u78ba\u4fdd\u5373\u6642\u6548\u80fd\u8207\u8cc7\u6599\u6e96\u78ba\u6027<\/h2>\n

\u4f7f\u7528\u8eca\u8f1b\u9598\u9053\u8b80\u53d6 CAN \u8cc7\u6599\u9700\u8981\u826f\u597d\u7684\u5373\u6642\u6548\u80fd\u3002\u7279\u5225\u662f\u5728\u81ea\u52d5\u99d5\u99db\u6216 ADAS \u60c5\u5883\u4e2d\uff0c\u8cc7\u6599\u5ef6\u9072\u6703\u5f71\u97ff\u5b89\u5168\u6027\u3002.<\/p>\n

CAN \u532f\u6d41\u6392\u672c\u8eab\u7684\u5ef6\u9072\u975e\u5e38\u4f4e\uff0c\u4ee5\u5fae\u79d2\u70ba\u55ae\u4f4d\u3002\u4f46\u662f\u9598\u9053\u8655\u7406\u3001\u5c01\u88dd\u548c\u4e0a\u50b3\u6703\u589e\u52a0\u984d\u5916\u7684\u5ef6\u9072\u3002\u5982\u4f55\u63a7\u5236\u9019\u4e00\u9ede\uff1f<\/p>\n

\u9996\u5148\uff0c\u76e1\u91cf\u6e1b\u5c11\u8655\u7406\u6b65\u9a5f<\/strong>. .\u63a5\u6536 CAN \u8a0a\u6846\u5f8c\uff0c\u7acb\u5373\u5728\u4e2d\u65b7\u8655\u7406\u7a0b\u5f0f\u6216\u9ad8\u512a\u5148\u9806\u5e8f\u4efb\u52d9\u4e2d\u9032\u884c\u89e3\u6790\uff0c\u800c\u4e0d\u9700\u8981\u6392\u968a\u3002\u89e3\u6790\u5b8c\u6210\u5f8c\uff0c\u76f4\u63a5\u653e\u5165\u50b3\u8f38\u7de9\u885d\u5340\uff0c\u4e26\u900f\u904e 5G \u7db2\u8def\u50b3\u9001\u3002.<\/p>\n

\u7b2c\u4e8c\uff0c\u4f7f\u7528\u786c\u9ad4\u52a0\u901f<\/strong>. .\u67d0\u4e9b\u5148\u9032\u7684\u8eca\u8f1b\u9598\u9053\u5668\u6574\u5408\u4e86\u5177\u6709\u786c\u9ad4\u904e\u6ffe\u529f\u80fd\u7684 CAN \u63a7\u5236\u5668\u3002\u5728\u786c\u9ad4\u5c64\u7d1a\u8a2d\u5b9a\u904e\u6ffe\u898f\u5247\uff0c\u50c5\u63a5\u53d7\u611f\u8208\u8da3\u7684\u8a0a\u606f ID\uff0c\u6368\u68c4\u5176\u4ed6\u8a0a\u606f ID\u3002\u9019\u53ef\u964d\u4f4e CPU \u8ca0\u8f09\uff0c\u4e26\u63d0\u9ad8\u8655\u7406\u901f\u5ea6\u3002.<\/p>\n

\u7b2c\u4e09\uff0c\u5c0f\u5fc3\u7ba1\u7406\u6642\u9593\u6233\u8a18<\/strong>. .\u6bcf\u500b CAN \u8a0a\u6846\u61c9\u5728\u9598\u9053\u63a5\u6536\u5f8c\u7acb\u5373\u53d6\u5f97\u6642\u9593\u6233\u8a18\u3002\u9019\u500b\u6642\u9593\u6233\u9700\u8981\u5fae\u79d2\u7d1a\u7684\u7cbe\u78ba\u5ea6\u3002\u4e0a\u50b3\u5230\u96f2\u7aef\u7684\u8cc7\u6599\u61c9\u9644\u6709\u6b64\u6642\u9593\u6233\u8a18\uff0c\u4ee5\u4fbf\u96f2\u7aef\u77e5\u9053\u8cc7\u6599\u662f\u4f55\u6642\u6536\u96c6\u7684\u3002.<\/p>\n

SV910 \u652f\u63f4 PTP\/GPTP \u6642\u9593\u540c\u6b65\u901a\u8a0a\u5354\u5b9a\uff0c\u53ef\u78ba\u4fdd\u9598\u9053\u5668\u8207\u5176\u4ed6\u88dd\u7f6e\u4e4b\u9593\u7684\u9ad8\u7cbe\u5ea6\u6642\u9418\u540c\u6b65\u3002\u5c0d\u65bc\u9700\u8981\u591a\u88dd\u7f6e\u5354\u8abf\u7684\u60c5\u5883\u4f86\u8aaa\u975e\u5e38\u91cd\u8981\u3002.<\/p>\n

\u9084\u5fc5\u9808\u4fdd\u8b49\u8cc7\u6599\u7684\u6e96\u78ba\u6027\u3002\u96d6\u7136 CAN \u532f\u6d41\u6392\u5df2\u5167\u5efa\u932f\u8aa4\u6aa2\u67e5\u529f\u80fd\uff0c\u4f46\u5076\u723e\u4ecd\u6703\u51fa\u73fe\u640d\u58de\u7684\u8cc7\u6599\u3002\u9598\u9053\u9700\u8981\u4e8c\u6b21\u9a57\u8b49\u3002\u5c0d\u65bc\u5f15\u64ce\u8f49\u901f\uff0c\u6b63\u5e38\u64cd\u4f5c\u4e0d\u53ef\u80fd\u7a81\u7136\u5f9e 1000 \u8f49\u8df3\u5230 5000 \u8f49\u518d\u56de\u4f86\u3002\u5c07\u9019\u4e9b\u7570\u5e38\u8cc7\u6599\u6a19\u793a\u70ba\u53ef\u7591\u8cc7\u6599\uff0c\u800c\u4e0d\u662f\u76f4\u63a5\u4f7f\u7528\u3002.<\/p>\n

\u4e5f\u53ef\u8655\u7406\u532f\u6d41\u6392\u7121\u8a0a\u606f\u7684\u60c5\u6cc1\u3002\u5982\u679c\u9577\u6642\u9593\u672a\u6536\u5230\u7279\u5b9a\u8a0a\u606f\uff0c\u5c0d\u61c9\u7684 ECU \u53ef\u80fd\u767c\u751f\u6545\u969c\u6216\u532f\u6d41\u6392\u65b7\u7dda\u3002\u9598\u9053\u5668\u5fc5\u9808\u5075\u6e2c\u5230\u6b64\u72c0\u6cc1\u4e26\u56de\u5831\u7570\u5e38\u3002.<\/p>\n

\u96d9 5G \u67b6\u69cb\u7684\u512a\u52e2<\/h2>\n

SV910 \u5177\u6709\u96d9 5G \u67b6\u69cb\uff0c\u642d\u914d\u5169\u500b 5G \u6a21\u7d44\u3002\u70ba\u4f55\u8981\u63a1\u7528\u96d9 5G\uff1f<\/p>\n

\u7b2c\u4e00\u500b\u539f\u56e0\u662f\u5099\u63f4<\/strong>. .\u9577\u9014\u884c\u99db\u7684\u5546\u7528\u8eca\u8f1b\u53ef\u80fd\u6703\u7d93\u904e\u4fe1\u865f\u8f03\u5dee\u7684\u5730\u5340\u3002\u4f7f\u7528\u55ae 5G\uff0c\u4fe1\u865f\u4e1f\u5931\u610f\u5473\u8457\u6c92\u6709\u6578\u64da\u50b3\u8f38\u3002\u96d9 5G \u4f7f\u7528\u4e0d\u540c\u904b\u71df\u5546\u7684 SIM \u5361 - \u4e2d\u570b\u96fb\u4fe1\u548c\u4e2d\u570b\u806f\u901a\uff0c\u6216\u4e2d\u570b\u79fb\u52d5\u548c\u4e2d\u570b\u806f\u901a\u3002\u7576\u5176\u4e2d\u4e00\u500b\u4fe1\u865f\u8870\u6e1b\u6642\uff0c\u5207\u63db\u5230\u53e6\u4e00\u500b\u4fe1\u865f\u3002.<\/p>\n

\u53ef\u4ee5\u81ea\u52d5\u5207\u63db\u3002\u9598\u9053\u6703\u5373\u6642\u76e3\u63a7\u5169\u500b 5G \u9023\u7dda\u7684\u8a0a\u865f\u5f37\u5ea6\u548c\u5ef6\u9072\uff0c\u4e26\u4f7f\u7528\u54c1\u8cea\u8f03\u4f73\u7684\u9023\u7d50\u3002\u6216\u540c\u6642\u4f7f\u7528\u5169\u500b\u9023\u7d50\u9032\u884c\u9023\u7d50\u805a\u5408\uff0c\u5c07\u983b\u5bec\u52a0\u500d\u3002.<\/p>\n

\u7b2c\u4e8c\u500b\u539f\u56e0\u662f\u6d41\u91cf\u5206\u4f48<\/strong>. .\u8eca\u8f1b\u61c9\u7528\u901a\u5e38\u6d89\u53ca\u591a\u500b\u8cc7\u6599\u4e32\u6d41 - CAN \u532f\u6d41\u6392\u8cc7\u6599\u3001\u651d\u5f71\u6a5f\u8996\u8a0a\u3001\u5b9a\u4f4d\u8cc7\u6599\u3001V2X \u901a\u8a0a\u3002\u9019\u4e9b\u8cc7\u6599\u985e\u578b\u5177\u6709\u4e0d\u540c\u7684\u7279\u6027\u548c\u4e0d\u540c\u7684\u983b\u5bec\/\u5ef6\u9072\u9700\u6c42\u3002.<\/p>\n

\u900f\u904e\u4e00\u689d 5G \u9023\u7dda\u8def\u7531\u95dc\u9375\u63a7\u5236\u8cc7\u6599\uff0c\u900f\u904e\u53e6\u4e00\u689d 5G \u9023\u7dda\u8def\u7531\u9ad8\u6d41\u91cf\u8996\u8a0a\u3002\u9019\u53ef\u4ee5\u9632\u6b62\u5e72\u64fe\uff0c\u4e26\u78ba\u4fdd\u91cd\u8981\u8cc7\u6599\u7684\u5373\u6642\u50b3\u9001\u3002.<\/p>\n

\u7b2c\u4e09\u500b\u539f\u56e0\u662f\u5b89\u5168\u9694\u96e2<\/strong>. .\u6709\u4e9b\u8eca\u968a\u7ba1\u7406\u5e73\u53f0\u9700\u8981\u5c07\u8eca\u8f1b\u63a7\u5236\u901a\u9053\u8207\u8cc7\u6599\u6536\u96c6\u901a\u9053\u5be6\u9ad4\u5206\u96e2\uff0c\u4ee5\u78ba\u4fdd\u5b89\u5168\u6027\u3002\u96d9 5G \u53ef\u5b8c\u7f8e\u6eff\u8db3\u9019\u9805\u9700\u6c42\u3002\u63a7\u5236\u6307\u4ee4\u4f7f\u7528\u5c08\u7528\u9023\u7d50\uff0c\u6536\u96c6\u7684\u8cc7\u6599\u5247\u4f7f\u7528\u53e6\u4e00\u500b\u9023\u7d50\u3002\u5373\u4f7f\u9ed1\u5ba2\u5165\u4fb5\u8cc7\u6599\u901a\u9053\uff0c\u4e5f\u7121\u6cd5\u7be1\u6539\u63a7\u5236\u6307\u4ee4\u3002.<\/p>\n

\u8207\u8eca\u968a\u7ba1\u7406\u5e73\u53f0\u6574\u5408<\/h2>\n

\"704ce1f0fc109f61b29494d0c34b7e95\"<\/p>\n

\u6536\u96c6\u8cc7\u6599\u5f8c\uff0c\u8eca\u8f1b\u9598\u9053\u6703\u4e0a\u50b3\u81f3\u8eca\u968a\u7ba1\u7406\u5e73\u53f0\u3002\u5e73\u53f0\u901a\u5e38\u662f\u96f2\u7aef\u670d\u52d9\uff0c\u63d0\u4f9b\u8eca\u8f1b\u76e3\u63a7\u3001\u8def\u7dda\u56de\u653e\u3001\u7d71\u8a08\u5831\u544a\u3001\u6545\u969c\u8b66\u544a\u53ca\u5176\u4ed6\u529f\u80fd\u3002.<\/p>\n

\u8cc7\u6599\u4e0a\u50b3\u6709\u591a\u7a2e\u901a\u8a0a\u5354\u5b9a\u9078\u9805\u3002. MQTT \u6700\u5e38\u898b<\/strong>. .\u5b83\u662f\u5c08\u70ba IoT \u8a2d\u8a08\u7684\u8f15\u91cf\u7d1a\u8a0a\u606f\u4f47\u5217\u901a\u8a0a\u5354\u5b9a\u3002\u9598\u9053\u5668\u626e\u6f14 MQTT \u5ba2\u6236\u7aef\uff0c\u9023\u63a5\u81f3\u96f2\u7aef MQTT \u4f3a\u670d\u5668\u4e26\u5b9a\u671f\u767c\u4f48\u8a0a\u606f\u3002.<\/p>\n

MQTT \u652f\u63f4\u4e0d\u540c\u7684 QoS\uff08\u670d\u52d9\u54c1\u8cea\uff09\u7b49\u7d1a\u3002QoS 0 \u662f\u6700\u591a\u4e00\u6b21 - \u555f\u52d5\u4e26\u907a\u5fd8\uff0c\u53ef\u80fd\u6703\u907a\u5931\u3002QoS 1 \u81f3\u5c11\u4e00\u6b21 - \u4fdd\u8b49\u50b3\u9001\uff0c\u4f46\u53ef\u80fd\u6703\u91cd\u8907\u3002QoS 2 \u6070\u597d\u662f\u4e00\u6b21 - \u4fdd\u8b49\u50b3\u9001\uff0c\u4e0d\u6703\u91cd\u8907\u3002\u6839\u64da\u8cc7\u6599\u91cd\u8981\u6027\u9078\u64c7\u9069\u7576\u7684 QoS\u3002.<\/p>\n

HTTP\/HTTPS \u4e5f\u88ab\u5ee3\u6cdb\u4f7f\u7528<\/strong>. .\u9598\u9053\u6703\u5b9a\u671f\u5c07\u6536\u96c6\u5230\u7684\u8cc7\u6599\u6253\u5305\uff0c\u4e26\u900f\u904e HTTP POST \u8acb\u6c42\u4e0a\u50b3\u81f3\u96f2 API\u3002\u6b64\u65b9\u5f0f\u7c21\u55ae\u76f4\u63a5\uff0c\u76f8\u5bb9\u6027\u4f73\u3002\u7f3a\u9ede\u662f HTTP \u958b\u92b7\u8d85\u904e MQTT\uff0c\u4e0d\u592a\u9069\u5408\u9ad8\u983b\u5c0f\u8cc7\u6599\u50b3\u8f38\u3002.<\/p>\n

\u4e5f\u6709\u4e00\u4e9b\u5c08\u9580\u7684\u901a\u8a0a\u5354\u5b9a<\/strong>. .\u4f8b\u5982 JT\/T 808 \u662f\u4ea4\u901a\u90e8\u91dd\u5c0d\u9053\u8def\u904b\u8f38\u8eca\u8f1b\u885b\u661f\u5b9a\u4f4d\u7cfb\u7d71\u7d42\u7aef\u6240\u5236\u5b9a\u7684\u6a19\u6e96\u901a\u8a0a\u5354\u5b9a\u3002\u8a31\u591a\u5546\u7528\u8eca\u968a\u7ba1\u7406\u5e73\u53f0\u90fd\u4f7f\u7528\u6b64\u6a19\u6e96\u3002\u652f\u63f4 JT\/T 808 \u9700\u8981\u5be6\u4f5c\u5b8c\u6574\u7684\u901a\u8a0a\u5354\u5b9a\u5806\u758a\u3002.<\/p>\n

\u8cc7\u6599\u683c\u5f0f\u9700\u8981\u8207\u5e73\u53f0\u9054\u6210\u5354\u8b70\u3002JSON \u5f88\u5e38\u898b - \u4eba\u985e\u53ef\u8b80\u4e14\u5bb9\u6613\u9664\u932f\u3002\u4f46 JSON \u6703\u4f54\u7528\u7a7a\u9593\uff0c\u6240\u4ee5\u5982\u679c\u5c0d\u8cc7\u6599\u6210\u672c\u5f88\u654f\u611f\uff0c\u8acb\u4f7f\u7528\u4e8c\u9032\u4f4d\u683c\u5f0f\uff0c\u4f8b\u5982 Protobuf \u6216\u81ea\u8a02\u7684\u7cbe\u7c21\u683c\u5f0f\u3002.<\/p>\n

\u57f7\u884c\u8a3a\u65b7\u529f\u80fd<\/h2>\n

\u9664\u4e86\u8b80\u53d6\u5373\u6642\u8cc7\u6599\u5916\uff0c\u8eca\u8f1b\u9598\u9053\u9084\u80fd\u57f7\u884c\u8a3a\u65b7\u3002.<\/p>\n

\u8eca\u8f1b ECU \u6703\u7522\u751f\u8a3a\u65b7\u6545\u969c\u4ee3\u78bc (DTC)\u3002\u7576\u5f15\u64ce\u767c\u751f\u6545\u969c\u6642\uff0c\u6703\u7522\u751f P0001\u3001P0002 \u7b49\u4ee3\u78bc\u3002\u9019\u4e9b\u4ee3\u78bc\u6703\u5132\u5b58\u5728 ECU \u4e2d\uff0c\u4e26\u53ef\u900f\u904e CAN \u532f\u6d41\u6392\u8b80\u53d6\u3002.<\/p>\n

\u6a19\u6e96\u8a3a\u65b7\u901a\u8a0a\u5354\u5b9a\u70ba ISO 14229 (UDS - \u7d71\u4e00\u8a3a\u65b7\u670d\u52d9) \u548c SAE J1939-73\u3002\u9598\u9053\u4f5c\u70ba\u8a3a\u65b7\u7528\u6236\u7aef\uff0c\u5411 ECU \u767c\u9001\u8a3a\u65b7\u8acb\u6c42\uff0cECU \u56de\u50b3\u6545\u969c\u4ee3\u78bc\u548c\u76f8\u95dc\u8cc7\u8a0a\u3002.<\/p>\n

\u8b80\u53d6\u6545\u969c\u4ee3\u78bc\u5f8c\uff0c\u5c07\u5176\u8f49\u63db\u6210\u53ef\u8b80\u7684\u63cf\u8ff0\u3002P0001 \u8868\u793a\u4ec0\u9ebc\u610f\u601d\uff1f\u71c3\u6cb9\u91cf\u8abf\u7bc0\u5668\u63a7\u5236\u96fb\u8def\/\u958b\u8def\u3002\u6b64\u8f49\u8b6f\u9700\u8981\u6545\u969c\u78bc\u8cc7\u6599\u5eab\u3002\u9598\u9053\u5668\u53ef\u5728\u5167\u90e8\u5132\u5b58\u5e38\u898b\u4ee3\u78bc\u7684\u63cf\u8ff0\uff0c\u6216\u4e0a\u50b3\u81f3\u96f2\u7aef\u9032\u884c\u7ffb\u8b6f\u3002.<\/p>\n

\u900f\u904e\u6545\u969c\u4ee3\u78bc\uff0c\u8eca\u968a\u7ba1\u7406\u5e73\u53f0\u53ef\u4ee5\u63d0\u4f9b\u65e9\u671f\u8b66\u544a\u3002\u4f8b\u5982\uff0c\u5075\u6e2c\u5230\u51b7\u537b\u6db2\u6eab\u5ea6\u904e\u9ad8\u7684\u4ee3\u78bc\u6642\uff0c\u6703\u7acb\u5373\u901a\u77e5\u99d5\u99db\u54e1\u548c\u7dad\u4fee\u90e8\u9580\uff0c\u9632\u6b62\u5f15\u64ce\u904e\u71b1\u9020\u6210\u640d\u5bb3\u3002.<\/p>\n

\u5148\u9032\u7684\u61c9\u7528\u7a0b\u5f0f\u53ef\u57f7\u884c\u9810\u6e2c\u6027\u7dad\u8b77\u3002\u5206\u6790\u5404\u7a2e\u8eca\u8f1b\u53c3\u6578\u7684\u8da8\u52e2\u4ee5\u9810\u6e2c\u6f5b\u5728\u6545\u969c\u3002\u4f8b\u5982\uff0c\u9010\u6f38\u4e0b\u964d\u7684\u5f15\u64ce\u6a5f\u6cb9\u58d3\u529b\u5c1a\u672a\u89f8\u767c\u6545\u969c\u78bc\uff0c\u4f46\u537b\u986f\u793a\u51fa\u8b66\u544a\u8de1\u8c61 - \u63d0\u793a\u99d5\u99db\u54e1\u6aa2\u67e5\u6a5f\u6cb9\u3002.<\/p>\n

\u4f86\u81ea\u5be6\u969b\u5c08\u6848\u7684\u7d93\u9a57<\/h2>\n

\u7d93\u904e\u7121\u6578\u7684\u5c08\u6848\u5f8c\uff0c\u6211\u5011\u9047\u5230\u4e86\u8a31\u591a\u632b\u6298\u3002.<\/p>\n

\u7b2c\u4e00\u8ab2\uff1a\u59a5\u5584\u4fdd\u8b77 CAN \u532f\u6d41\u6392<\/strong>. .\u8eca\u8f1b CAN \u532f\u6d41\u6392\u975e\u5e38\u91cd\u8981\u3002\u5982\u679c\u9598\u9053\u6545\u969c\u5c07\u7e3d\u7dda\u62c9\u4f4e\u6216\u50b3\u9001\u932f\u8aa4\u7684\u8a0a\u606f\uff0c\u53ef\u80fd\u6703\u5f71\u97ff\u8eca\u8f1b\u7684\u6b63\u5e38\u904b\u4f5c\u3002.<\/p>\n

\u9598\u9053 CAN \u4ecb\u9762\u9700\u8981\u96fb\u6c23\u9694\u96e2\uff0c\u4ee5\u9632\u6b62\u6545\u969c\u50b3\u64ad\u3002\u532f\u6d41\u6392\u4fdd\u8b77\u96fb\u8def\u61c9\u5728\u904e\u96fb\u58d3\u6216\u904e\u96fb\u6d41\u6642\u81ea\u52d5\u65b7\u958b\u3002\u8edf\u9ad4\u4e5f\u9700\u8981\u4fdd\u8b77\u6a5f\u5236 - \u5728\u5075\u6e2c\u5230\u7570\u5e38\u6642\u505c\u6b62\u50b3\u8f38\uff0c\u4ee5\u907f\u514d\u532f\u6d41\u6392\u5e72\u64fe\u3002.<\/p>\n

\u7b2c\u4e8c\u8ab2\uff1a\u8eca\u8f1b\u6539\u88dd\u5fc5\u9808\u7b26\u5408\u6cd5\u898f<\/strong>. .\u5728\u5546\u7528\u8eca\u8f1b\u4e0a\u5b89\u88dd\u8eca\u8f1b\u9598\u9053\u69cb\u6210\u8eca\u8f1b\u6539\u88dd\u3002\u5fc5\u9808\u7b26\u5408\u570b\u5bb6\u548c\u5730\u65b9\u7684\u6cd5\u898f\u8981\u6c42\uff0c\u540c\u6642\u4e0d\u5f71\u97ff\u8eca\u8f1b\u7684\u5b89\u5168\u6027\u80fd\u3002\u67d0\u4e9b\u5730\u5340\u8981\u6c42\u5728\u6539\u88dd\u5f8c\u5411\u8eca\u8f1b\u7ba1\u7406\u6a5f\u95dc\u767b\u8a18\u3002.<\/p>\n

\u7b2c\u4e09\u8ab2\uff1a\u8cc7\u6599\u5b89\u5168\u8207\u96b1\u79c1\u6b0a\u4fdd\u8b77\u975e\u5e38\u91cd\u8981<\/strong>. .\u8eca\u8f1b\u884c\u99db\u8def\u7dda\u548c\u884c\u70ba\u6d89\u53ca\u96b1\u79c1\u3002\u52a0\u5bc6\u8cc7\u6599\u50b3\u8f38\u3001\u533f\u540d\u5132\u5b58\u3002\u96f2\u7aef\u5e73\u53f0\u5b58\u53d6\u9700\u8981\u6b0a\u9650\u63a7\u5236 - \u4e0d\u80fd\u96a8\u4fbf\u6d29\u9732\u7d66\u7b2c\u4e09\u65b9\u3002.<\/p>\n

\u7e3d\u9ad4\u800c\u8a00\uff0c\u900f\u904e CAN \u532f\u6d41\u6392\u8207\u8eca\u7528\u9598\u9053\u8b80\u53d6\u8eca\u8f1b\u8cc7\u6599\uff0c\u5f62\u6210\u4e86\u9023\u7db2\u8eca\u8f1b\u61c9\u7528\u7684\u57fa\u790e\u3002\u9019\u9805\u6280\u8853\u672c\u8eab\u4e26\u4e0d\u8907\u96dc\uff0c\u4f46\u8981\u505a\u597d\u5b83\u9700\u8981\u6ce8\u610f\u8a31\u591a\u7d30\u7bc0\u3002\u9069\u61c9\u4e0d\u540c\u7684\u8eca\u8f1b\u578b\u865f\u3001\u78ba\u4fdd\u5373\u6642\u6548\u80fd\u3001\u8cc7\u6599\u6e96\u78ba\u6027\u3001\u901a\u8a0a\u53ef\u9760\u6027 - \u6bcf\u500b\u5c64\u9762\u90fd\u9700\u8981\u4ed4\u7d30\u6539\u9032\uff0c\u624d\u80fd\u63d0\u4f9b\u7a69\u5b9a\u53ef\u9760\u7684\u670d\u52d9\u3002.<\/p>","protected":false},"excerpt":{"rendered":"

  Last year while setting up a fleet management system for a logistics company, the client wanted real-time monitoring of fuel consumption, engine RPM, and coolant temperature for every truck. They didn’t just want data stored locally – everything needed streaming to the cloud platform so dispatchers could monitor vehicle status. Sounded straightforward enough. 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