为解决水产养殖中溶氧浓度低、分布不均衡及常规增氧设备能耗高的问题，设计了一种基于数字信号处理器（DSP）的光伏推流系统。该系统以TMS320F2812 为主控芯片，通过电压、电流检测电路对太阳能光伏阵列的输出功率进行实时跟踪，实现对蓄电池充放电切换，并采用最大功率点跟踪（MPPT）方法保证了光伏阵列的最大功率输出。用该系统对长7 m、宽5 m、深1 m的浅水区域进行连续5 d的推流实验，并与相同条件下无推流时的溶氧浓度空间分布情况进行对比。结果显示，无推流情况下，试验区域从岸边到湖中溶氧浓度分布呈现由低到高的梯度分布；推流后的溶氧浓度空间分布趋于均衡，且比无推流时的浓度均值提高1~2 mg/L。研究表明，光伏推流能大大降低能耗，提高水体溶氧浓度，改善水体溶氧分布均衡性，对提高水产养殖的密度和产量具有现实意义。

To solve the problems of low DO  concentration, unbalanced DO distribution in water and high energy consumption of conventional aerators in aquaculture, a DSP-based solar push-flow system was designed in this paper. The system uses TMS320F2812 as the main controller, and through tracking the output power of the photovoltaic array by voltage and current detecting circuit, achieves the switch 
between battery charge and discharge; moreover, maximum power point tracking (MPPT) method was used to assure the maximum power output of PV array. The system was used in a 5-day push flow experiment in a 7m＊5m shallow water area and the DO concentration spatial distribution was compared with that in none push flow situation. The results showed that, in none push flow situation, the DO concentration presented an obvious gradient distribution from the water shore to center area. While after a certain time of push flow, the DO concentration spatial distribution tended to balanced and the concentration improved. The research shows that PV push flow can reduce energy consumption significantly, increase DO concentration, improve the balance of DO spatial distribution and has practical significance to increase aquaculture density and production.