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    • 2. 发明授权
    • Process for driving a sensor with offset control
    • 用于驱动具有偏移控制的传感器的过程
    • US6029497A
    • 2000-02-29
    • US33069
    • 1998-03-02
    • Gerald BrinksManfred Weinacht
    • Gerald BrinksManfred Weinacht
    • G01P21/00G01D3/032G01P1/00G01P15/08G01P15/12
    • G01D3/032G01P1/006G01P15/123
    • The invention concerns a process for driving a sensor with offset control. Such processes for driving are required, for example, to be used in acceleration transducers in motor vehicles for triggering, e.g., airbags or belt-tensioning devices. However, with existing processes the output nominal signal was repeatedly corrupted, e.g., by temperature-related interference signals, also known as the offset. In addition, existing systems are unreliable during turn-on. However, with the process according to this invention, the sign and the value of the difference between the output signal and a reference voltage is detected at a fixed or variable time pulse, with the sign changing the measuring voltage at the output and the difference value determining the clock frequency for this control process. Also, during turn-on a significantly increased clock frequency will be reduced in stages until the operating frequency is reached. The process according to this invention, therefore, allows reliable and low cost acceleration transducers to be realized.
    • 本发明涉及用于驱动具有偏移控制的传感器的过程。 需要这种驱动方法,例如,用于机动车辆中的加速度传感器,用于触发例如安全气囊或皮带张紧装置。 然而,对于现有的处理,输出标称信号被重复地损坏,例如通过温度相关的干扰信号,也称为偏移。 此外,现有系统在开机时不可靠。 然而,根据本发明的方法,在固定或可变时间脉冲下检测输出信号和参考电压之间的差异的符号和值,其中符号改变输出端的测量电压和差值 确定此控制过程的时钟频率。 此外,在导通期间,显着增加的时钟频率将逐级降低,直到达到工作频率。 因此,根据本发明的方法允许实现可靠和低成本的加速换能器。
    • 5. 发明授权
    • Offset regulation device
    • 偏移调节装置
    • US06532429B1
    • 2003-03-11
    • US09403164
    • 2000-02-18
    • Gerald BrinksThomas OhgkeGünther Schuster
    • Gerald BrinksThomas OhgkeGünther Schuster
    • G01P2100
    • G05B23/0235
    • The invention relates to an offset regulation device for a sensor module and a method for realizing such an offset regulation, particularly for acceleration sensors and pressure sensors. The disadvantage of currently used offset regulation devices is that impermissible offset drifts or other errors are not recognized and are camouflaged by the offset regulation device. As a result, the measuring values can be distorted. The offset regulation device according to the invention comprises a monitoring device that is integrated into the offset regulation device and which recognizes and indicates such errors. This monitoring device comprises an analog or digital adder, which detects the deviation of the actual value from the desired value or values depending thereon. If the regulation takes too long because the deviation is too large and the offset is therefore not permissible, then a maximum or minimum value is reached during the adding up in the adder. Once a limit value is reached, an error message is generated and indicated.
    • 本发明涉及用于传感器模块的偏移调节装置和用于实现这种偏移调节的方法,特别是用于加速度传感器和压力传感器。 目前使用的偏移调节装置的缺点是不允许的偏移漂移或其他误差不被识别并被偏移调节装置所伪装。 因此,测量值可能失真。 根据本发明的偏移调节装置包括集成到偏移调节装置中并且识别并指示这种错误的监视装置。 该监视装置包括模拟或数字加法器,其根据其检测实际值与期望值或值的偏差。 如果由于偏差太大而偏移量不允许,则调节需要太长时间,则在加法器加法中达到最大值或最小值。 一旦达到极限值,就会生成并指示错误信息。