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    • 1. 发明授权
    • Output power control circuit for a mobile radio apparatus
    • 用于移动无线电设备的输出功率控制电路
    • US4870698A
    • 1989-09-26
    • US113115
    • 1987-10-27
    • Tsutomu KatsuyamaIsao YoshidaToyoo KanaiYasunobu Taguchi
    • Tsutomu KatsuyamaIsao YoshidaToyoo KanaiYasunobu Taguchi
    • H04B1/40H03G3/20H04B1/036H04B1/04H04B7/005H04B7/26
    • H04W52/52H04B1/036H04B2001/0416H04W52/36Y02B60/50
    • An output power control circuit is provided in a casing of a mobile radio apparatus together with an automatic power control circuit and an RF signal amplifier. The output power control circuit applied level control signals to the automatic power control circuit for maintaining the power level of the output RF signal of the RF amplifier at one of a plurality of output power levels corresponding to the level control signals. The output power control circuit has a receiver, a temperature sensing circuit and a logic circuit. The receiver receives RF signals transmitted by a master station and detects power level setting command signals included in the received RF signal. The temperature sensing circuit detects an internal temperature of the casing and provides a power reduction signal upon detecting that the internal temperature has exceeded a predetermined temperature. The logic circuit receives the power level setting command signal from said receiver, and generates a level control signal for determining an output power level corresponding to the power level setting command signal, and generates a level control signal for determining an output power level which is lower than that specified by the power level setting command signal upon receiving the power reduction signal from the temperature sensing circuit.
    • 输出功率控制电路与自动功率控制电路和RF信号放大器一起设置在移动无线电设备的壳体中。 输出功率控制电路将电平控制信号施加到自动功率控制电路,用于将RF放大器的输出RF信号的功率电平维持在与电平控制信号对应的多个输出功率电平中的一个上。 输出功率控制电路具有接收器,温度检测电路和逻辑电路。 接收机接收由主站发送的RF信号,并且检测包括在所接收的RF信号中的功率电平设置命令信号。 温度检测电路检测到壳体的内部温度,并且在检测到内部温度已经超过预定温度时提供功率降低信号。 逻辑电路接收来自所述接收机的功率电平设定命令信号,并产生用于确定与功率电平设定指令信号对应的输出功率电平的电平控制信号,并生成电平控制信号,以确定较低的输出功率电平 比从温度检测电路接收到功率降低信号时由功率电平设定指令信号指定的值高。
    • 7. 发明授权
    • Method and apparatus for evaluating length of defect in eddy current testing
    • 用于评估涡流测试中缺陷长度的方法和装置
    • US07911206B2
    • 2011-03-22
    • US11771436
    • 2007-06-29
    • Akira NishimizuYoshio NonakaIsao YoshidaMotoyuki NakamuraAkihiro TakiMasahiro Koike
    • Akira NishimizuYoshio NonakaIsao YoshidaMotoyuki NakamuraAkihiro TakiMasahiro Koike
    • G01N27/82G01N27/72
    • G01N27/9046
    • The surface length of a metal subject to be inspected is evaluated by detecting an eddy current without using a combination of a scale and visual or liquid penetrant inspection. An exciting coil and a detecting coil are scanned above the subject in a length direction. An eddy current detector measures an output voltage corresponding to scanning positions based on an output from the detecting coil. Based on an output voltage distribution curve indicating a distribution of output voltages corresponding to the scanning positions, position information is extracted corresponding to values which are within a differential voltage range and lower by 12 dB than a maximum value of the output voltages on the left and right sides of the distribution. A distance between the positions included in the extracted information is calculated to evaluate the length of a slit which is a defect present on the subject surface.
    • 要检查的金属的表面长度通过检测涡流来评估,而不使用水垢和视觉或液体渗透剂检查的组合。 激光线圈和检测线圈在长度方向上扫描被检体的上方。 涡电流检测器基于来自检测线圈的输出来测量对应于扫描位置的输出电压。 基于表示与扫描位置对应的输出电压分布的输出电压分布曲线,对应于在差分电压范围内并且比左侧的输出电压的最大值低12dB的值提取位置信息, 右侧分配。 计算提取的信息中包含的位置之间的距离,以评估作为被摄体表面上存在的缺陷的狭缝的长度。