为合理配置测量资源,提高产品检验结果的可靠性,对抽样检验中测量不确定度引起的误判风险进行了量化评估。分析了抽样检验中可能存在的各种风险,重点对测量不确定度的影响进行了讨论;分别针对检验前误判率预估和检验结果误判率计算两种应用情况,提出了误判率计算公式;以产品尺寸合格性检验为例,进行了误判率计算和分析。结果表明,抽样检验误接收和误拒收概率均随测量不确定度的增大而增大,产品检验前应根据可接受误判率合理选择测量方法;对具体产品批的合格性判定结果,应同时计算对应的误判率,以保证产品检验结果的可靠性。
To reasonably distribute measurement resources and improve the reliability of the prod- uct inspection results, misjudgment risks caused by measurement uncertainties in sampling inspection were evaluated. Different kinds of risks in sampling inspections were analyzed, and the influences of measurement uncertainties were mainly described. Misjudgment probability formulas were given, re- spectively for the pre-estimations before inspections and calculations after inspections. Taking product size conformity assessment as an example, misjudgment probabilities were calculated and analyzed. Results show that misjudgment probabilities for both acceptance and rejection in sampling inspection increase with the measurement uncertainties, measurement methods should be reasonably chosen be- fore inspections according to acceptable misjudgment probabilities. For the conformity assessment re- suits of specific product batch, corresponding misjudgment probability should also be calculated to en- sure the reliability of product inspection results.