An intelligent embedded software for heavy metals detection instrument was designed. Electrochemical￣optical sensor including micro electrode array ( MEA ) and light addressable potentiometric sensor ( LAPS ) was utilized in the instrument. The instrument provides reliable interaction with the control computer,intelligent self￣checking and accurate sensor fault feedback. In the detection process,the automatic range can maximize the advan￣tages of the hardware. It also has the function of error compensation and detection of abnormal circuit. The instru￣ment has the characteristics of high stability,automatic detection and can complete the detection task in the case of unattended conditions.%针对水环境重金属监测仪器，设计了一种智能化嵌入式软件。该仪器采用光电复合传感器芯片，包括微阵列电化学传感器和光电位寻址传感器。仪器设计了可靠稳定的通信机制与上位机进行人机交互，仪器具有智能化自检功能，能够及时反馈传感器的故障信息。在检测过程中具有自动量程功能，能够最大发挥硬件优势，同时具有误差补偿和电路异常的检测机制。仪器具有高稳定性、自动化检测的特点，并完成了在野外无人值守条件下的检测任务。
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