竞赛 - bluetooth蓝牙技术 bluetooth蓝牙技术网为蓝牙物联网方案专利提供项目招商交易合作机会,涉及智能家居、蓝牙耳机、蓝牙定位、AOA、智能手表、行车记录仪、运动健康、心率计、血压计、集成电路、芯片、模块、传感器等 http://yikouzu.com/index.php/cn/projects/contest 2026-01-05T10:10:13+08:00 bluetooth.com.cn sale@bluetooth.com.cn Joomla! - Open Source Content Management 自动驾驶竞赛车 2020-09-04T10:34:11+08:00 2020-09-04T10:34:11+08:00 http://yikouzu.com/index.php/cn/projects/projects-collection/63-2020-nxp/20-autonomous-racing-car-the-first-place Super User sale@bluetooth.com.cn <p><img src="http://yikouzu.com//images/contest/2019_microchip_iot/Nxp_Cup_-_Autonomous_Racing_Car/Autonomous_Racing_Car.jpg" alt=""></p><div> <h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p>自动驾驶汽车开始统治世界。所以让我们试着做我们自己的赛车!</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/63-2020-nxp/20-autonomous-racing-car-the-first-place" rel="noopener">阅读全文...</a></p> <p><img src="http://yikouzu.com//images/contest/2019_microchip_iot/Nxp_Cup_-_Autonomous_Racing_Car/Autonomous_Racing_Car.jpg" alt=""></p><div> <h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p>自动驾驶汽车开始统治世界。所以让我们试着做我们自己的赛车!</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/63-2020-nxp/20-autonomous-racing-car-the-first-place" rel="noopener">阅读全文...</a></p> 采用蓝牙Mesh的污染参数监测系统 2020-09-06T21:09:20+08:00 2020-09-06T21:09:20+08:00 http://yikouzu.com/index.php/cn/projects/projects-collection/62-2019-5/23-mesh Super User sale@bluetooth.com.cn <p><img src="http://yikouzu.com//images/contest/2019_Cypress_Bluetooth_5_IoT_contest/Pollution_Parameters_Monitoring_System/Samyak_Jain_Pollution_Parameters_Monitoring_System_1.png" alt=""></p><div> <h2 id="items-used-in-this-project" class="plain">项目中使用的工具物品</h2> <h3 id="hardware-components">硬件</h3> Arduino Uno - R3</div> <div>LCD液晶屏套件16x2字符显示</div> <div>Analog 气体传感器(MQ2)</div> <div>40针公插头 10 个</div> <div>USB A/Micro 线束 - 2m</div> <div>10 跳线 150mm</div> <div>CYW20819 BLE Mesh 5.0 开发板</div> <div> <h3 id="software-apps-and-online-services">软件、App和在线服务</h3> <div>Arduino IDE</div> Wiced Smart ( from CYPRESS)</div> <div>Modus Toolbox 1.1 (from CYPRESS)</div> <h3 id="hand-tools-and-fabrication-machines">手工工具和制造器械</h3> <div>烙铁</div> <div>插头, 特殊线</div> <div>&nbsp;</div> <div> <h2 id="story">故事</h2> <div class="em-project-body__story"> <p>研制了一套移动实时空气污染监测系统。这个系统正在开发中,目的是实时监测污染。本系统采用低成本的空气质量监测传感器与GPS和GSM/GPRS模块或蓝牙网状网络。各种气体的浓度将使用半导体传感器测量,并使用GPS模块定位该浓度。这个浓度将在不同的地点实时测量。传感器采集数据后将使用GPRS/蓝牙模块连同获得的位置将数据发送到数据库。上述工作的基础是提供一个实时动态的污染测量系统。.</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/62-2019-5/23-mesh" rel="noopener">阅读全文...</a></p> <p><img src="http://yikouzu.com//images/contest/2019_Cypress_Bluetooth_5_IoT_contest/Pollution_Parameters_Monitoring_System/Samyak_Jain_Pollution_Parameters_Monitoring_System_1.png" alt=""></p><div> <h2 id="items-used-in-this-project" class="plain">项目中使用的工具物品</h2> <h3 id="hardware-components">硬件</h3> Arduino Uno - R3</div> <div>LCD液晶屏套件16x2字符显示</div> <div>Analog 气体传感器(MQ2)</div> <div>40针公插头 10 个</div> <div>USB A/Micro 线束 - 2m</div> <div>10 跳线 150mm</div> <div>CYW20819 BLE Mesh 5.0 开发板</div> <div> <h3 id="software-apps-and-online-services">软件、App和在线服务</h3> <div>Arduino IDE</div> Wiced Smart ( from CYPRESS)</div> <div>Modus Toolbox 1.1 (from CYPRESS)</div> <h3 id="hand-tools-and-fabrication-machines">手工工具和制造器械</h3> <div>烙铁</div> <div>插头, 特殊线</div> <div>&nbsp;</div> <div> <h2 id="story">故事</h2> <div class="em-project-body__story"> <p>研制了一套移动实时空气污染监测系统。这个系统正在开发中,目的是实时监测污染。本系统采用低成本的空气质量监测传感器与GPS和GSM/GPRS模块或蓝牙网状网络。各种气体的浓度将使用半导体传感器测量,并使用GPS模块定位该浓度。这个浓度将在不同的地点实时测量。传感器采集数据后将使用GPRS/蓝牙模块连同获得的位置将数据发送到数据库。上述工作的基础是提供一个实时动态的污染测量系统。.</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/62-2019-5/23-mesh" rel="noopener">阅读全文...</a></p> 植物土壤的水密度监测 2020-09-04T18:00:24+08:00 2020-09-04T18:00:24+08:00 http://yikouzu.com/index.php/cn/projects/projects-collection/62-2019-5/21-water-density-mapping-for-plants Super User sale@bluetooth.com.cn <p><img src="http://yikouzu.com//images/Water_Density_Mapping_For_Plants.png" alt=""></p><div> <h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p><img src="http://yikouzu.com/images/contest/2019_Cypress_Bluetooth_5_IoT_contest/Water%20Density%20Mapping%20For%20Plants/Hardware%20Schematic_Water%20Density%20Mapping%20For%20Plants.png" alt="Hardware Schematic Water Density Mapping For Plants" /></p> <p>由于田间的变化,绘制农田土壤含水量地图是一项挑战。为了跟踪土壤水分含量,每株植物都配备了CYBT-213043和电容式土壤水分传感器,形成一个网状网络,配对的android app将数据存储在本地并弹出一个可视化标示。&nbsp;</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/62-2019-5/21-water-density-mapping-for-plants" rel="noopener">阅读全文...</a></p> <p><img src="http://yikouzu.com//images/Water_Density_Mapping_For_Plants.png" alt=""></p><div> <h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p><img src="http://yikouzu.com/images/contest/2019_Cypress_Bluetooth_5_IoT_contest/Water%20Density%20Mapping%20For%20Plants/Hardware%20Schematic_Water%20Density%20Mapping%20For%20Plants.png" alt="Hardware Schematic Water Density Mapping For Plants" /></p> <p>由于田间的变化,绘制农田土壤含水量地图是一项挑战。为了跟踪土壤水分含量,每株植物都配备了CYBT-213043和电容式土壤水分传感器,形成一个网状网络,配对的android app将数据存储在本地并弹出一个可视化标示。&nbsp;</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/62-2019-5/21-water-density-mapping-for-plants" rel="noopener">阅读全文...</a></p> 家庭花园工具 2020-09-04T03:27:23+08:00 2020-09-04T03:27:23+08:00 http://yikouzu.com/index.php/cn/projects/projects-collection/62-2019-5/18-home-garden-kit Super User sale@bluetooth.com.cn <p><img src="http://yikouzu.com//images/Home_Garden_Kit.png" alt=""></p><div> <h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p>BLE Mesh为家庭花园提供了一个简单的解决方案。</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/62-2019-5/18-home-garden-kit" rel="noopener">阅读全文...</a></p> <p><img src="http://yikouzu.com//images/Home_Garden_Kit.png" alt=""></p><div> <h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p>BLE Mesh为家庭花园提供了一个简单的解决方案。</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/62-2019-5/18-home-garden-kit" rel="noopener">阅读全文...</a></p> 物联网孵化器 2020-09-04T09:44:19+08:00 2020-09-04T09:44:19+08:00 http://yikouzu.com/index.php/cn/projects/projects-collection/64-2019-microchip/19-iot-incubator-the-first-place Super User sale@bluetooth.com.cn <p><img src="http://yikouzu.com//images/contest/2019_microchip_iot/Iot_Incubator/Mohamed_Lanjri_El_Halimi_story_image_1553953412143442.png" alt=""></p><h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p>基于云决策的工业物联网终端</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/64-2019-microchip/19-iot-incubator-the-first-place" rel="noopener">阅读全文...</a></p> <p><img src="http://yikouzu.com//images/contest/2019_microchip_iot/Iot_Incubator/Mohamed_Lanjri_El_Halimi_story_image_1553953412143442.png" alt=""></p><h2 id="about-the-project" class="em-project-header__heading">项目简介</h2> <div class="em-project-header__excerpt"> <p>基于云决策的工业物联网终端</p> <p class="feed-readmore"><a target="_blank" href="http://yikouzu.com/index.php/cn/projects/contests/64-2019-microchip/19-iot-incubator-the-first-place" rel="noopener">阅读全文...</a></p> mysqli object is already closed (500 Whoops, looks like something went wrong.)

Error

HTTP 500 Whoops, looks like something went wrong.

mysqli object is already closed

Exception

Error

  1. */
  2. public function disconnect()
  3. {
  4. // Close the connection.
  5. if (\is_callable([$this->connection, 'close'])) {
  6. $this->connection->close();
  7. }
  8. parent::disconnect();
  9. }
  1. */
  2. public function disconnect()
  3. {
  4. // Close the connection.
  5. if (\is_callable([$this->connection, 'close'])) {
  6. $this->connection->close();
  7. }
  8. parent::disconnect();
  9. }
  1. *
  2. * @since 2.0.0
  3. */
  4. public function __destruct()
  5. {
  6. $this->disconnect();
  7. }
  8. /**
  9. * Alter database's character set.
  10. *
DatabaseDriver->__destruct()

Stack Trace

Error
Error:
mysqli object is already closed

  at /var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318
  at mysqli->close()
     (/var/www/html/libraries/vendor/joomla/database/src/Mysqli/MysqliDriver.php:318)
  at Joomla\Database\Mysqli\MysqliDriver->disconnect()
     (/var/www/html/libraries/vendor/joomla/database/src/DatabaseDriver.php:496)
  at Joomla\Database\DatabaseDriver->__destruct()