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    • 6. 发明申请
    • Diagnostic safety inspection apparatus
    • 诊断安全检查仪器
    • US20040263178A1
    • 2004-12-30
    • US10602858
    • 2003-06-25
    • Tracy C. Klaus
    • G01R031/00
    • B60T13/683B60T17/22G01L5/28
    • An improved diagnostic device for inspecting the pneumatic braking systems and electrical signaling systems on a cargo hauling trailer comprises a unique circuit arrangement permitting a single inspector to inspect the pneumatic braking systems and when required, override diagnostic cycling of the brakes between applied and released states to an alternate diagnostic wherein the system is continuously supplied with air to permit leak detection. A solenoid, normally cycling air to the pneumatic braking systems under the control of a programmable timer, can be overridden and powered to supply continuous air, regardless of the state of the timer, by actuating a brake light circuit which is connected to the solenoid through a pressure actuated switch.
    • 用于检查货物拖运拖车上的气动制动系统和电子信号系统的改进的诊断装置包括独特的电路装置,允许单个检查员检查气动制动系统,并且在需要时,覆盖施加和释放状态之间的制动器的诊断循环, 替代诊断,其中系统连续地供应空气以允许泄漏检测。 在可编程定时器的控制下,通常将空气循环到气动制动系统的螺线管,可以通过致动连接到螺线管通过的制动灯回路来覆盖并供电以提供连续空气,而不管定时器的状态如何 压力致动开关。
    • 8. 发明申请
    • Method and error location in branched low voltage and medium boltage networks and evaluation circuit used thereof
    • 分支式低压和中型螺栓网络中的方法和误差位置及其使用的评估电路
    • US20040245994A1
    • 2004-12-09
    • US10484585
    • 2004-07-15
    • Hubert SchlappFrieder Jehring
    • G01R031/00
    • G01R31/11
    • The invention relates to a method for error location in branched low voltage and medium voltage networks and to an evaluation network used therefore. The inventive method consists of the following steps: initially, the frequency of the low-frequency component of the impulse wave current or voltage is determined; the circuit inductance is calculated, using a Thomson resonant circuit formula, from the determined low-frequency transient frequency with the known capacitance of the impulse capacitor; the inductance of the impulse capacitor and the measuring line is deducted as a correction factor; finally the distance from the place of error in the cable is calculated from the inductance thus calculated on the basis of the inductance of the measured object, the advantage thereof being that it is possible to located voltage-dependent cable errors in a branched low-voltage or medium voltage network by means of length determination in a quick and error-free manner without signal reflections causing disturbances on branches or end points of the cable. The evaluation circuit is provided with a conditioning and protection component, an A/D converter and at least one memory unit, in addition to an evaluation computer for the signal.
    • 本发明涉及一种用于分支低压和中压网络中的误差定位方法以及因此使用的评估网络。 本发明的方法包括以下步骤:首先确定脉冲波电流或电压的低频分量的频率; 使用Thomson谐振电路公式计算电路电感,从确定的低频瞬态频率与脉冲电容器的已知电容; 脉冲电容和测量线的电感被扣除作为校正因子; 最后,根据测量对象的电感计算出的电感,计算出电缆中误差位置的距离,其优点在于可以在分支低电压中定位电压相关的电缆误差 或中压网络通过长度确定以快速和无错误的方式,而没有信号反射造成电缆分支或端点的干扰。 评估电路除了用于信号的评估计算机之外还设置有调理和保护部件,A / D转换器和至少一个存储器单元。