The invention relates to a sensor system SS for driving an ultrasonic transducer TR and evaluating the signals of the ultrasonic transducer for ultrasonic measurements. A sensor system SS includes a digital input circuit DSI having at least two identical signal paths of respective signals. The respective signal of each signal path corresponds to a corresponding signal of the other signal paths. The sensor system SS may be in a normal operating state in which equipment components of n signal paths are preferably parameterized and/or configured in a different manner than that signal path. The sensor system SS may be in a test operating state in which equipment components of at least two but not all of the n signal paths are parameterized and/or configured, preferably in the same manner as the signal path. The monitoring device SUP preferably compares the performance of at least two of the n signal paths in the test state and presumes that at least two of the n signal paths are faulty when they have the same performance.
本发明涉及用于驱动超声换能器TR并评估超声换能器的信号以进行超声测量的传感器系统SS。传感器系统SS包括具有各自信号的至少两个相同的信号路径的数字输入电路DSI。每个信号路径的各个信号对应于其它信号路径的对应信号。传感器系统SS可处于正常操作状态,其中优选以与该信号路径不同的方式参数化和/或配置n个信号路径的设备部件。传感器系统SS可处于测试操作状态,其中优选以与该信号路径相同的方式参数化和/或配置n个信号路径中的至少两个但非全部的信号路径的设备部件。监测装置SUP在测试状态下优选地比较n个信号路径中的至少两个信号路径的表现,并在它们具有相同表现时推定n个信号路径中的至少两个信号路径存在故障。
Ultrasonic sensor system for automotive functional safety applications
用于汽车功能性安全应用的超声传感器系统
2024-08-23
Patent
Electronic Resource
Chinese
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