Abstract:In order to judge the balance between the left and right buckets of the TBR, the difference judgement method and the difference rate judgement method are proposed. The difference judgement method uses the difference between the average water weights of the left and right buckets as the criterion, and let α be the difference limit. The difference rate judgement method uses the ratio of the absolute value of the difference between the left and right buckets to the average of left and right bucket measurements as the judgement criterion, and let β be the difference rate limit. The experiment analysis on the two TBRs of JDZ05 and JDZ10 was carried out. The results show that: 1) For JDZ05, α may take 01 g, β may take 1%; for JDZ10, α may take 02 g, β may take 1%. 2) When the left and right buckets are unbalanced, the rainfall ranges that are not conducive to JDZ05 and JDZ10 monitoring are 0~55 mm and 0~19 mm, respectively; after balancing the left and right buckets, the rainfall ranges unfavorable for JDZ05 and JDZ10 monitoring are 0~35 mm and 0~7 mm, respectively. 3) After balancing the left and right buckets, the difference value, the difference value rate of the left and right buckets and the dispersion of the measurement errors can be reduced, the repeatability of the measurement error can be improved, which is helpful to improve the accuracy of the rainfall measurement. The research results can provide a reference for developing TBR bucket balance judgement method and improving TBR calibration process. .txt