{"id":3880,"date":"2023-03-15T22:35:38","date_gmt":"2023-03-15T14:35:38","guid":{"rendered":"https:\/\/resource.webduino.io\/?p=3880"},"modified":"2023-03-15T22:35:38","modified_gmt":"2023-03-15T14:35:38","slug":"ultrasonic","status":"publish","type":"docs","link":"https:\/\/resource.webduino.io\/docs\/socket\/sensor\/ultrasonic","title":{"rendered":"\u8d85\u97f3\u6ce2\u5075\u6e2c\u8ddd\u96e2"},"content":{"rendered":"

\u63a5\u4e0b\u4f86\u5e7e\u7bc7\u5c31\u8981\u4f86\u73a9\u73a9\u300c\u50b3\u611f\u5668\u300d\u7684\u61c9\u7528\uff0c\u6211\u5011\u53ef\u4ee5\u900f\u904e\u300c\u50b3\u611f\u5668\u300d\uff0c\u5075\u6e2c\u6211\u5011\u9031\u906d\u7684\u74b0\u5883\u8b8a\u5316\uff0c\u4f8b\u5982\u548c\u4e00\u500b\u6771\u897f\u4e4b\u9593\u7684\u300c\u8ddd\u96e2\u300d\u3001\u6709\u6c92\u6709\u300c\u4eba\u300d\u9760\u8fd1\u3001\u6709\u6c92\u6709\u300c\u8072\u97f3\u300d\u3001\u5149\u7167\u5ea6\u662f\u591a\u5c11…\u7b49\uff0c\u9019\u4e00\u4e9b\u74b0\u5883\u8b8a\u5316\u5728\u7db2\u9801\u88e1\u982d\uff0c\u90fd\u6703\u8b8a\u6210\u300c\u6578\u503c\u300d\u4f86\u5448\u73fe\uff0c\u900f\u904e\u6578\u503c\u7684\u8b8a\u5316\uff0c\u9032\u4e00\u6b65\u5c31\u53ef\u4ee5\u63a7\u5236\u958b\u71c8\u6216\u95dc\u71c8\u4e86\u3002<\/p>\n

\u8d85\u97f3\u6ce2\u50b3\u611f\u5668<\/h2>\n

\u6211\u5011\u4f7f\u7528\u300c\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u300d\u7684\u578b\u865f\u70ba HC-SR04\uff0c\u5916\u89c0\u4e0a\u6709\u5169\u500b\u5f88\u50cf\u5587\u53ed\u7684\u69cb\u9020\uff0c\u5176\u4e2d\u4e00\u500b ( Trig ) \u6703\u767c\u51fa\u8d85\u97f3\u6ce2\uff0c\u8d85\u97f3\u6ce2\u649e\u5230\u6771\u897f\u4e4b\u5f8c\u5c31\u6703\u53cd\u5f48\uff0c\u518d\u7531\u53e6\u5916\u4e00\u500b ( Echo ) \u63a5\u6536\u3002<\/p>\n

\n

\u5176\u4ed6\u6559\u5b78\uff1a\u8d85\u97f3\u6ce2\u5075\u6e2c<\/a>\u3001\u8d85\u97f3\u6ce2 ( \u6539\u8b8a\u5716\u7247\u5927\u5c0f )<\/a><\/p>\n<\/blockquote>\n

\"\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\"<\/p>\n

\u8d85\u97f3\u6ce2\u7684\u4e00\u4f86\u4e00\u5f80\u904e\u7a0b\u4e2d\u6703\u6709\u6642\u9593\u5dee\uff0c\u5c31\u53ef\u4ee5\u77e5\u9053\u548c\u9019\u500b\u6771\u897f\u4e4b\u9593\u7684\u8ddd\u96e2\u662f\u591a\u5c11\u4e86\uff0c\u56e0\u70ba\u97f3\u901f\u7684\u516c\u5f0f\u70ba\u300c( 331+0.6 t ) \u516c\u5c3a\/\u79d2\u300d\uff0ct \u662f\u6eab\u5ea6\uff0c\u6240\u4ee5\u6eab\u5ea6\u8d8a\u9ad8\u97f3\u901f\u5c31\u6703\u8d8a\u5feb\uff0c\u4e0d\u904e\u5176\u5be6\u4e5f\u4e0d\u7528\u592a\u64d4\u5fc3\uff0c\u56e0\u70ba\u901a\u5e38\u4f7f\u7528\u8d85\u97f3\u6ce2\u5075\u6e2c\u8ddd\u96e2\u7684\u5f85\u6e2c\u7269\u5efa\u8b70\u4e0d\u8981\u8d85\u904e\u4e09\u516c\u5c3a\uff0c\u56e0\u70ba\u97f3\u6ce2\u6703\u64f4\u6563\uff0c\u8ddd\u96e2\u592a\u9060\u6216\u662f\u5f85\u6e2c\u7269\u592a\u5c0f\uff0c\u90fd\u6703\u5f71\u97ff\u5230\u6e96\u78ba\u5ea6\u3002( \u5c31\u6709\u9ede\u50cf\u4fdd\u6301\u4e00\u6bb5\u8ddd\u96e2\u8b1b\u8a71\uff0c\u5c31\u6703\u807d\u4e0d\u592a\u6e05\u695a\u5c0d\u65b9\u8aaa\u4ec0\u9ebc )<\/p>\n

\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u7684\u63a5\u7dda\u5f88\u7c21\u55ae\uff0c\u53ea\u8981\u4f7f\u7528\u675c\u90a6\u7dda\uff0c\u628a\u8d85\u97f3\u6ce2\u7684 VCC \u63a5\u5728 5V \u7684\u4f4d\u7f6e\uff0cGND \u63a5 GND\uff0cTrig \u548c Echo \u5206\u5225\u63a5\u5728\u6578\u4f4d\u8173 ( 2~13 )\uff0c\u9019\u88cf\u63a5\u5728 11 \u548c 10 \u3002<\/p>\n

\"\u99ac\u514b\u4e00\u865f\u8207\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u63a5\u7dda\u5716\"<\/p>\n

\u63a5\u7dda\u5b8c\u6210\u5f8c\uff0c\u5148\u4f7f\u7528 Webduino Blockly \u7dda\u4e0a\u7de8\u8f2f\u5de5\u5177\u6e2c\u8a66 ( https:\/\/blockly.webduino.io<\/a> )\uff0c\u653e\u5165\u300c\u958b\u767c\u677f\u7a4d\u6728\u300d\uff0c\u8f38\u5165\u88dd\u7f6e device ID\uff0c\u5728\u88e1\u9762\u653e\u5165\u300c\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u7a4d\u6728\u300d\uff0cTrig \u8173\u4f4d\u8a2d\u5b9a\u70ba 11\uff0cEcho \u8173\u4f4d\u8a2d\u5b9a\u70ba 10\u3002<\/p>\n

\"Webduino<\/p>\n

\u653e\u5165\u300c\u5075\u6e2c\u8ddd\u96e2\u300d\u7684\u7a4d\u6728\uff0c\u4e26\u8a2d\u5b9a\u5075\u6e2c\u6642\u9593 ( 0.5 \u79d2 )\u3002<\/p>\n

\"\u653e\u5165\u8d85\u97f3\u6ce2\u5075\u6e2c\u8ddd\u96e2\u7a4d\u6728\"<\/p>\n

\u6253\u958b\u4e00\u500b\u5167\u5d4c\u7684\u7db2\u9801\uff0c\u4e0b\u62c9\u9078\u55ae\u9078\u64c7\u300c\u986f\u793a\u6587\u5b57\u300d\uff0c\u78ba\u8a8d\u958b\u767c\u677f\u4e0a\u7dda\uff0c\u9ede\u9078\u53f3\u4e0a\u89d2\u7684\u57f7\u884c\u6309\u9215\uff0c\u900f\u904e\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u5075\u6e2c\u7684\u8ddd\u96e2\uff0c\u6bcf 0.5 \u79d2\u5c31\u6703\u51fa\u73fe\u5728\u6587\u5b57\u5340\u57df\u5167\u3002<\/p>\n

\n

\u76f8\u95dc\u6559\u5b78\uff1a\u8d85\u97f3\u6ce2\u5075\u6e2c<\/a>\u3001\u8d85\u97f3\u6ce2 ( \u6539\u8b8a\u5716\u7247\u5927\u5c0f )<\/a>\u3001\u8d85\u97f3\u6ce2 ( \u63a7\u5236 LED )<\/a><\/p>\n

\n

\u7bc4\u4f8b\uff1ahttps:\/\/goo.gl\/H82yVj<\/a><\/p>\n<\/blockquote>\n

\"\u986f\u793a\u8d85\u97f3\u6ce2\u5075\u6e2c\u8ddd\u96e2\"<\/p>\n

Webduino \u7a0b\u5f0f\u7528\u6cd5<\/h2>\n

\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u7684\u4f7f\u7528\u65b9\u6cd5\u662f .ping()<\/code>\uff0c\u4f7f\u7528\u7684\u6642\u5019\u6703\u56de\u50b3\u4e00\u500b promise \u7684\u7269\u4ef6\uff0c\u56e0\u6b64\u53ef\u4ee5\u900f\u904e callback \u51fd\u5f0f\u4f86\u9032\u884c\u6bcf\u591a\u5c11\u6beb\u79d2\u5075\u6e2c\u4e00\u6b21\uff0c\u4e26\u7528\u5075\u6e2c\u5230\u7684\u6578\u503c\u4f86\u57f7\u884c\u60f3\u8981\u7684\u52d5\u4f5c\u3002<\/p>\n

var ultrasonic = getUltrasonic(board, 11, 10);\nultrasonic.ping(callback ,\u6beb\u79d2);\n<\/code><\/pre>\n
\u56de\u50b3\u7684\u8ddd\u96e2\u53ef\u4ee5\u900f\u904e ultrasonic.distance<\/code> \u53d6\u5f97\uff0c\u5982\u679c\u7a0b\u5f0f\u50cf\u4e0b\u9762\u9019\u6bb5\u9019\u6a23\u5beb\uff0c\u5c31\u6703\u6bcf 0.5 \u79d2\u7531 console \u5370\u51fa\u4e00\u6b21\u8d85\u97f3\u6ce2\u7684\u8ddd\u96e2\u3002<\/p>\n
var ultrasonic = getUltrasonic(board, 11, 10);\nultrasonic.ping(function(){\n  console.log(ultrasonic.distance);\n}, 500);\n<\/code><\/pre>\n
\u5982\u679c\u4e0d\u8981\u6bcf\u591a\u5c11\u6beb\u79d2\u624d\u5075\u6e2c\u4e00\u6b21 ( \u5982\u679c\u7db2\u8def\u5f88\u9806\u66a2\u7684\u8a71 )\uff0c\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528 ultrasonic.ping()<\/code>\uff0c\u5c31\u6703\u76f4\u63a5\u56de\u50b3\u4e00\u500b\u8ddd\u96e2\uff0c\u56de\u50b3\u4e4b\u5f8c\u5c31\u6703\u7e7c\u7e8c\u9032\u884c\u5075\u6e2c\uff0c\u5075\u6e2c\u901f\u5ea6\u5b8c\u5168\u53d6\u6c7a\u65bc\u97f3\u6ce2\u7684\u901f\u5ea6\u8207\u7db2\u8def\u901f\u5ea6\u3002<\/p>\n
var ultrasonic = getUltrasonic(board, 11, 10);\nultrasonic.ping();\n<\/code><\/pre>\n
\u5982\u540c\u525b\u525b\u8aaa\u7684\uff0cultrasonic.ping()<\/code> \u6703\u56de\u50b3\u4e00\u500b promise \u7269\u4ef6\uff0c\u6240\u4ee5\u5c31\u53ef\u4ee5\u7528 then<\/code> \u7684\u8a9e\u6cd5\uff0c\u5beb\u4e00\u500b\u53ef\u4ee5\u5373\u6642\u5075\u6e2c\u8ddd\u96e2\u7684\u7c21\u55ae\u7a0b\u5f0f\u3002<\/p>\n
var ultrasonic = getUltrasonic(board, 11, 10);\ntrig();\nfunction trig(){\n  ultrasonic.ping().then(function(){\n    console.log(ultrasonic.distance);\n    return trig();\n  });\n}\n<\/code><\/pre>\n
\u8981\u505c\u6b62\u8d85\u97f3\u6ce2\u7684\u5075\u6e2c\uff0c\u53ea\u8981\u4f7f\u7528 .stopPing()<\/code> \u5c31\u53ef\u4ee5\u8fa6\u5230\u3002<\/p>\n
ultrasonic.stopPing()\n<\/code><\/pre>\n
\u7db2\u9801\u63a7\u5236<\/h2>\n
\u4e86\u89e3\u7528\u6cd5\u4e4b\u5f8c\uff0c\u5be6\u969b\u505a\u4e00\u500b\u9760\u8fd1 ( 20 \u516c\u5206\u5167 ) \u5c31\u958b\u71c8\uff0c\u96e2\u958b\u5c31\u7184\u71c8\u7684\u7a0b\u5f0f\uff0c\u540c\u6642\u4e5f\u628a\u8ddd\u96e2\u986f\u793a\u5728\u7db2\u9801\u4e0a\uff0c\u4e26\u6539\u8b8a\u7db2\u9801\u88cf\u982d\u7684\u71c8\u6ce1\u5716\u7247 ( \u4e5f\u662f\u958b\u71c8\u95dc\u71c8 )\u3002\u56e0\u70ba\u8981\u63a7\u5236\u667a\u6167\u63d2\u5ea7\uff0c\u6240\u4ee5\u6211\u5011\u8981\u5148\u63a5\u7dda\uff0c\u53c8\u7531\u65bc Webduino \u958b\u767c\u677f\u99ac\u514b\u4e00\u865f\u53ea\u6709\u4e00\u500b GND\uff0c\u6240\u4ee5\u5fc5\u9808\u900f\u904e\u300c\u9eb5\u5305\u677f\u300d\u4f86\u63a5\u7dda\uff0c\u9019\u88cf\u6211\u5011\u628a LED \u63a5\u5728 9 \u865f\u8173\u3002<\/p>\n
\"\u667a\u6167\u63d2\u5ea7\u8207\u8d85\u97f3\u6ce2\u63a5\u7dda\u5716\"<\/p>\n
\u8981\u5728\u81ea\u5df1\u7684\u7db2\u9801\u88e1\u9762\u4f7f\u7528\uff0c\u5c31\u8981\u5f15\u5165\u300c webduino-min.js \u300d\u9084\u6709\u300c webduino-blockly.js \u300d<\/strong>\u9019\u5169\u500b JavaScript\uff0c\u9019\u6a23\u6211\u5011\u624d\u6709\u64cd\u63a7\u958b\u767c\u677f\u3001\u71c8\u6ce1\u548c\u8d85\u97f3\u6ce2\u7684 API \u53ef\u4ee5\u4f7f\u7528\u3002<\/p>\n
<html>\n\n<head>\n  <meta charset=\"utf-8\">\n  <meta name=\"viewport\" content=\"width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no\">\n  <title>Webduino<\/title>\n  <script src=\"https:\/\/ajax.googleapis.com\/ajax\/libs\/jquery\/1.9.1\/jquery.min.js\"><\/script>\n  <script src=\"https:\/\/webduino.io\/components\/webduino-js\/dist\/webduino-all.min.js\"><\/script>\n  <script src=\"https:\/\/blockly.webduino.io\/webduino-blockly.js\"><\/script>\n<\/head>\n\n<body>\n<\/body>\n<\/html>\n<\/code><\/pre>\n
\u63a5\u8457\u64b0\u5beb\u4e0b\u5217 CSS \u8207 JavaScript\uff0c\u90fd\u5b8c\u6210\u4e4b\u5f8c\uff0c\u6253\u958b\u7db2\u9801\uff0c\u7528\u624b\u6216\u662f\u906e\u853d\u7269\u5728\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u524d\u9762\u6643\u5440\u6643\uff0c\u5c31\u53ef\u4ee5\u770b\u5230\u9760\u8fd1\u5230\u4e8c\u5341\u516c\u5206\u5167\u7684\u6642\u5019\uff0c\u5be6\u969b\u7684\u96fb\u71c8\u548c\u7db2\u9801\u88e1\u7684\u96fb\u71c8\u5716\u7247\u90fd\u6703\u4eae\u8d77\uff0c\u540c\u6642\u7db2\u9801\u4e5f\u6703\u986f\u793a\u8ddd\u96e2\u7684\u6578\u503c\u3002<\/p>\n
CSS<\/p>\n
img{\n  display:none;\n}\n.show{\n  display:block;\n}\n<\/code><\/pre>\n
JavaScript<\/p>\n
$(function(){\n\n  var $text = $('#distance'),\n      $on = $('#on'),\n      $off = $('#off');\n\n  boardReady('\u4f60\u7684\u88dd\u7f6e ID', function (board) {\n    board.systemReset();\n    board.samplingInterval = 250;\n    var led = getLed(board, 9);\n    var ultrasonic = getUltrasonic(board, 11, 10);\n    console.log('ready');\n\n    go();\n\n    function go(){\n      ultrasonic.ping().then(function(){\n        $text.text(ultrasonic.distance);\n        if(ultrasonic.distance<20){\n          $on.addClass('show');\n          $off.removeClass('show');\n        }else{\n          $on.removeClass('show');\n          $off.addClass('show');\n        }\n        return go();\n      });\n    }\n\n\n  });\n\n});\n<\/code><\/pre>\n
\u5b8c\u6210\u7684\u52d5\u756b\uff1a<\/p>\n
\"\u8d85\u97f3\u6ce2\u5075\u6e2c\u8ddd\u96e2\u555f\u52d5\u667a\u6167\u63d2\u5ea7\u71c8\u6ce1\u958b\u95dc\"<\/p>\n
\u5c0f\u7d50<\/h2>\n
\u8d85\u97f3\u6ce2\u50b3\u611f\u5668\u7684\u61c9\u7528\u5728 Maker \u9818\u57df\u5c62\u898b\u4e0d\u9bae\uff0c\u7c21\u55ae\u7684\u5f9e\u81ea\u52d5\u9583\u907f\u969c\u7919\u7269\u7684\u8eca\u5b50\uff0c\u8907\u96dc\u7684\u5230\u6383\u5730\u6a5f\u5668\u4eba\u3001\u9ad4\u611f\u88dd\u7f6e…\u7b49\u7b49\uff0c\u800c\u4eca\u5929\u6211\u5011\u5982\u679c\u53ef\u4ee5\u4f7f\u7528\u7db2\u9801\u4f86\u64cd\u63a7\uff0c\u5c31\u80fd\u505a\u51fa\u66f4\u591a\u6709\u8da3\u7684\u4e8b\u60c5\u4e86\u3002<\/p>\n
\n
\u53c3\u8003\u8cc7\u8a0a\uff1a<\/p>\n