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Method and device for measuring a line resistance of control lines in hazard warning and control systems
Method and device for measuring a line resistance of control lines in hazard warning and control systems
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机译：在危险警告和控制系统中测量控制线的线电阻的方法和装置
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摘要
A method for measuring a line resistance RL (7) and determining control line (16) faults in a hazard warning and control system. The control lines (16) connect a control device (20) to an actuator (10) using an actuation voltage UA in the case of an event and supplies the actuator (10) with a monitoring voltage UM in the case of a monitoring process using a monitoring module (21). Furthermore, the control device (20) has a constant current sink (6), which can be activated by a microcontroller (1), and a switchover device (5). In order to determine the line resistance RL (7), a constant voltage supply is provided in a measurement time interval ΔtM by an energy store (9) integrated into the monitoring module (21) and is fed back to the control device (20), and the switchover device (5) deactivates the monitoring voltage UM supply from the control device (20) to the actuator (10) during the entire measurement time interval ΔtM.
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机译：一种在危险警告和控制系统中测量线路电阻R L （ 7 ）并确定控制线（ 16 ）故障的方法。控制线（ 16 ）使用驱动电压U A <将控制设备（ 20 ）连接到执行器（ 10 ）。 / Sub>（在发生事件的情况下），并在执行器（ 10 ）使用监视模块（ > 21 ）。此外，控制设备（ 20 ）具有恒定电流吸收器（ 6 ），可以由微控制器（ 1 ）激活，并且切换设备（ 5 ）。为了确定线路电阻R L （ 7 ），在测量时间间隔Δt M 中通过能量提供恒定电压电源存储（ 9 ）集成到监视模块（ 21 ）中，并反馈到控制设备（ 20 ）和切换设备（< 5 ）禁用从控制设备（ 20 ）到执行器（ 10 ）的监视电压U M 在整个测量时间间隔Δt M 中。
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