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    • 5. 发明申请
    • ENVIRONMENTAL RADIOACTIVITY MONITOR
    • 环境放射性监测
    • WO2003009000A1
    • 2003-01-30
    • PCT/GB2002/003103
    • 2002-07-05
    • CANBERRA HARWELL LTD
    • RYDEN, David, John
    • G01T1/178
    • G01T1/178
    • An environmental radioactivity monitor comprises a filter (12) through which air is caused to flow, and a detector (13) of radiation emitted from the particles trapped on the filter. The signals from the radiation detector are analyzed into a multiplicity of energy channels, for example with a multi-channel analyzer (22), the counts in at least two energy windows (W1, W2; W3, W4) being used to determine the shapes of the low-energy tails of the peaks of the naturally occurring radio-nuclides ThC' and RaC', so their effects can be eliminated. The shape of the ThC' peak is used to predict and strip out the ThC peak, and the shape of the RaC' peak is then used to predict and strip out the RaA peak, so all background effects are eliminated. Accurate measurements of air-borne radioactivity are hence possible with short counting times.
    • 环境放射性监测器包括使空气流过的过滤器(12)和从捕获在过滤器上的颗粒发射的辐射的检测器(13)。 来自辐射检测器的信号被分析成多个能量通道,例如使用多通道分析器(22),至少两个能量窗口(W1,W2; W3,W4)中的计数用于确定形状 的天然存在的放射性核素ThC'和RaC'的峰的低能量尾部,因此可以消除它们的影响。 ThC'峰的形状用于预测和去除ThC峰,然后使用RaC'峰的形状来预测和剥离RaA峰,因此所有背景效应都被消除。 因此,空投放射性的精确测量可以缩短计数时间。
    • 7. 发明申请
    • WHEEL FLANGE MONITORING
    • 轮法兰监测
    • WO2003004334A1
    • 2003-01-16
    • PCT/GB2002/002849
    • 2002-06-24
    • AEA TECHNOLOGY PLCRASAIAH, Winston, GehanVILLANUEVA-LEAL, Alberto
    • RASAIAH, Winston, GehanVILLANUEVA-LEAL, Alberto
    • B61K9/12
    • G01M17/10B61K9/12C10J2300/1621
    • The flanges of wheels of a railway vehicle are monitored for excess wear using an anvil block (20) supported by leaf springs (22) adjacent to the inside (14) of the rail head (13). A probe (25) projects above the block (20) such that a wheel flange (42) will push the anvil block (20) away from the rail (12). With such a block adjacent to each rail of a track at the same track position, the inter-flange spacing can be monitored for each wheelset. Such a block (20) may also carry an outer probe (32) which is pulled into contact with the outside of the falnge (42), at least one probe (32) being a flexible strip and providing signals indicating the separation of the probes (32 and 35), this giving an indication of flange thickness. When the wheel is not present, the outer probe (32) may locate in a recess (30) at the side of the rail head (13). Such an apparatus may be installed in a depot so every wheelset of every train can be monitored at frequent intervals.
    • 使用与轨头(13)的内部(14)相邻的板簧(22)支撑的砧块(20)来监测铁路车辆的车轮的凸缘以进行多余的磨损。 探针(25)在块(20)上方突出,使得轮缘(42)将砧块(20)推离轨道(12)。 由于在相同轨道位置处与轨道的每个轨道相邻的这种块,可以监视每个轮对的间隔间距。 这种块(20)还可以携带外探针(32),所述外探针(32)被拉动以与所述定子(42)的外部接触,所述至少一个探针(32)是柔性条,并提供指示所述探针分离的信号 (32和35),这给出了法兰厚度的指示。 当轮子不存在时,外探头(32)可以位于轨头(13)侧面的凹部(30)中。 这样的装置可以安装在仓库中,因此可以频繁地监视每个列车的每个轮对。