[参考译文] MSP430FR6047：使用校准文件的 EVM430-FR6047

您好、Ido、

 在运行算法之前、您是否在项目中更改了 volumeCalibrationOption 变量的值？

我之所以提出这个问题、是因为我在 USS 代码中找到了以下注释：

//! \brief The following API scales Volume Flow Rate by the additional scale 
//! factor.
//!
//! \n \n \b Note1: USS_getResultsInFloat must be called prior to calling
//! this function.
//!
//! The API multiplies results->volumeFlowRate by meterConfig->volumeAddlScaleFactor.
//! The API is only needed when the additional scale factor is larger than 1.0f. 
//! It checks the volumeCalibrationOption member in the
//! USS_Algorithms_User_Configuration structure.
//! For example:
//! If volumeCalibrationOption != USS_Alg_volume_flow_Calibration_Option_disabled
//! Then it also scales results->volumeFlowRateNoCalib member by volumeAddlScaleFactor.
//! If volumeCalibrationOption == USS_Alg_volume_flow_Calibration_Option_disabled
//! Then results->volumeFlowRateNoCalib = results->volumeFlowRate.
//! If API return message code USS_message_code_valid_results, then algorithms
//! result are valid.
//!
//! \param[in] config  is a pointer to the USS SW Library user configuration
//! \param[in] results  is a pointer to the USS Algorithms Result structure
//!
//! \return USS_message_code
extern USS_message_code USS_scaleVolumeFlowRate(
        USS_SW_Library_configuration *config,
        USS_Algorithms_Results *results);

如果您没有使用该变量禁用校准、则会为 volumeFlowRateNoCalib 分配与 volumeFlowRate 相同的值。 换句话说、它看起来像是 volumeFlowRateNoCalib 实际上将根据您的校准进行缩放。 我猜是因为它在使用您的校准文件、问题只是变量名称有点误导。 您可以尝试更改该变量以禁用 校准、然后重新检查它计算的流速以验证这一点。