Method for detecting an offset drift in a wheatstone measuring bridge
    4.
    发明授权
    Method for detecting an offset drift in a wheatstone measuring bridge 有权
    用于检测惠斯通测量桥偏移漂移的方法

    公开(公告)号:US07088108B2

    公开(公告)日:2006-08-08

    申请号:US11060921

    申请日:2005-02-18

    IPC分类号: G01R31/08 G01R27/02 G01R27/08

    摘要: In a method for detecting an offset drift in a resistive Wheatstone measuring bridge, a switch is made between a measuring mode and a testing mode without interfering in the internal structure of the measuring bridge. In testing mode, two sensor resistors that act in the same way and lie in different bridge arms in the measuring mode are connected in series, and a voltage level occurring in the connection of these sensor resistors is compared with a reference voltage. Preferably the sensor resistor that acts in a different way and lies between the two series-connected sensor resistors acting in the same way is bridged. The reference voltage is advantageously formed by resistive division of the voltage applied to the series connection of the sensor resistors. The testing mode may expediently be switched in such a way that the two pairs of sensor resistors acting in the same way are respectively tested in succession.

    摘要翻译: 在用于检测电阻式惠斯通测量桥中的偏移漂移的方法中,在测量模式和测试模式之间进行切换,而不会干扰测量桥的内部结构。 在测试模式下,以测量模式相同方式并且位于不同桥臂中的两个传感器电阻器串联连接,并且将这些传感器电阻器的连接中发生的电压电平与参考电压进行比较。 优选地,传感器电阻器以不同的方式起作用并位于以相同方式起作用的两个串联连接的传感器电阻器之间。 参考电压有利地通过施加到传感器电阻器的串联连接的电压的电阻分压来形成。 测试模式可以方便地切换,使得两对传感器电阻器以相同的方式起作用,分别连续测试。

    Method for detecting an offset drift in a wheatstone measuring bridge
    5.
    发明申请
    Method for detecting an offset drift in a wheatstone measuring bridge 有权
    用于检测惠斯通测量桥偏移漂移的方法

    公开(公告)号:US20050194980A1

    公开(公告)日:2005-09-08

    申请号:US11060921

    申请日:2005-02-18

    摘要: In a method for detecting an offset drift in a resistive Wheatstone measuring bridge, a switch is made between a measuring mode and a testing mode without intervening in the internal structure of the measuring bridge. To this end, in testing mode two sensor resistors which act in the same way and lie in different bridge arms in the measuring mode, are connected in series and a voltage level occurring in the connection of these sensor resistors is compared with a reference voltage. Preferably the sensor resistor which acts in a different way and lies between the two series-connected sensor resistors acting in the same way is bridged. The reference voltage is advantageously formed by resistive division of the voltage applied to the series connection of the sensor resistors. The testing mode may expediently be switched in such a way that the two pairs of sensor resistors respectively acting in the same way are tested in succession.

    摘要翻译: 在用于检测电阻式惠斯顿测量桥中的偏移漂移的方法中,在测量模式和测试模式之间进行开关,而不插入测量桥的内部结构。 为此,在测试模式下,在测量模式下以相同方式并且位于不同桥臂中的两个传感器电阻器串联连接,并且将这些传感器电阻器的连接中发生的电压电平与参考电压进行比较。 优选地,传感器电阻器以不同的方式起作用并位于以相同方式起作用的两个串联连接的传感器电阻器之间。 参考电压有利地通过施加到传感器电阻器的串联连接的电压的电阻分压来形成。 测试模式可以方便地切换,使得分别以相同方式起作用的两对传感器电阻器被连续地测试。