利用声致发光原理检测水质装置的设计

摘要

设计了一种利用声致发光原理检测水质的装置,该装置由反应室、超声驱动电源、换能器及光电转换装置等组成.检测时,将水样放在样品容器中,用管路与水泵连接,抽取水样并经进样口进入反应室,超声功率放大器驱动换能器,带动变幅杆与水样作用产生超声空化区域并伴随发光.通过探测窗口由光电倍增管接收并转换,输出给电脑进行处理.该装置可以快速获取水体样品中声致发光强度的大小,以及随着声功率的不同产生的发光强度的变化规律,并根据发光规律判断水体中不同物质的组成.%We devise a water quality detection device with sonoluminescence principle. It includes a reaction chamber, an ultrasound driving power, a transducer and a photoelectric device. Water sample is deposited in a sample container that is connected with a water pump by a pipe. The water sample is pumped into the reaction chamber. The ultrasound power then drives the transducer. Ultrasonic luminescence phenomenon further occurs for the water sample. The light is received by a photomultiplier tube through a detection window and then converted into an electronic signal fed into a computer. We can therefore analyze the quality of the water sample by sonoluminescence principle.