定位技术: 蓝牙5.1+ AoA/AoD 角度定位 + RSSI 距离估算
主控芯片: Nordic nRF52833/nRF5340（支持蓝牙5.1方向查找）
定位算法: 融合卡尔曼滤波的三角定位算法
通信协议: iBeacon, Eddystone, 自定义协议
基站设计: TDoA(Time Difference of Arrival) 基站阵列
]]>“智联康养，杰康守护”智慧养老平台 基于居家养老服务体系和现有智慧养老系统功能，打造一个以 “科技赋能+专业服务+全流程监管” 为核心的智慧养老综合平台，实现“前端智能感知+中台数据分析+后端服务响应”的全链路闭环。
]]> */ public function disconnect() { // Close the connection. if (\is_callable([$this->connection, 'close'])) { $this->connection->close(); } parent::disconnect(); } */ public function disconnect() { // Close the connection. if (\is_callable([$this->connection, 'close'])) { $this->connection->close(); } parent::disconnect(); } * * @since 2.0.0 */ public function __destruct() { $this->disconnect(); } /** * Alter database's character set. *|
Error
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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()
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