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    • 7. 发明授权
    • Identifying a plurality of devices
    • 识别多个设备
    • US08232869B2
    • 2012-07-31
    • US12688531
    • 2010-01-15
    • Steven Ian Bennett
    • Steven Ian Bennett
    • H04Q5/22
    • H04L12/403H04L1/0061H04L61/2038
    • A method and apparatus of identifying a plurality of devices connected along a common communications link is disclosed. A control station scans the devices by sending a succession of interrogation signals along the communication link, the interrogation signals including representation of the identification numbers of the devices. A first scan is carried out with interrogation signals identifying a first level of the range of identification numbers, and each device is programmed to generate, and to send to the control station, a response signal that includes its complete identification number and a checksum, upon receipt of a scan signal applicable thereto. Successive scans are carried out by the control station, adding the next higher level or the range of identification numbers, wherein upon completion of the scan that does not give rise to valid responses, the previously-paused scan is resumed.
    • 公开了一种识别沿着公共通信链路连接的多个设备的方法和装置。 控制站通过沿着通信链路发送一系列询问信号来扫描设备,询问信号包括设备的标识号的表示。 执行第一扫描,其具有识别标识号范围的第一级的询问信号,并且每个设备被编程为生成并向控制站发送包括其完整标识号和校验和的响应信号 接收适用于其的扫描信号。 连续扫描由控制站执行,添加下一个较高级别或识别号码的范围,其中在完成不产生有效响应的扫描结束时,恢复先前暂停的扫描。
    • 9. 发明授权
    • Detection arrangements
    • 检测安排
    • US07843324B2
    • 2010-11-30
    • US11884507
    • 2005-12-12
    • Stephen John PenneySteven Ian Bennett
    • Stephen John PenneySteven Ian Bennett
    • G08B29/00
    • G08B21/14H03K17/94
    • A detection system in which a single sensor (14) is employed to detect two, or more, levels, or ranges, of a parameter. The output signal from the sensor (14) is fed to a detection circuit (12) for amplification and thence to a control circuit (24). The control circuit (24) is switchable, either manually, or preferably programmably, for example by a timer, between two or more modes of operation for processing the output signal from the sensor (14) in a different manner, for example using different algorithms, according to the condition that is to be detected. The switching of the control circuit (24) between its modes results in a signal being sent to the detection circuit (12) to change its sensitivity to the signal received from the sensor (14), thereby to maintain accuracy of measurement of the parameter in both or all modes of operation.
    • 一种检测系统,其中使用单个传感器(14)来检测参数的两个或更多个等级或范围。 来自传感器(14)的输出信号被馈送到用于放大的检测电路(12),从而被馈送到控制电路(24)。 控制电路(24)可以例如通过例如使用不同的算法来处理来自传感器(14)的输出信号的两种或多种操作模式之间手动地或优选地可编程地可切换地(例如通过定时器) ,根据要检测的条件。 控制电路(24)在其模式之间的切换导致信号被发送到检测电路(12),以将其灵敏度改变为从传感器(14)接收的信号,从而保持参数的测量精度 两种或所有操作模式。
    • 10. 发明申请
    • Amplifier for Multi-Use of Single Environmental Sensor
    • 单一环境传感器多功能放大器
    • US20090033483A1
    • 2009-02-05
    • US11886611
    • 2006-01-18
    • Steven Ian Bennett
    • Steven Ian Bennett
    • G08B19/00
    • H03F3/45475H03F1/302H03F1/34H03F2203/45136H03F2203/45524
    • A detection system in which a single sensor is employed to detect an extensive range of a parameter The output signal from the sensor is fed to the input of the electrical circuit, having a feedback loop, wherein the electrical circuit has a non-linear transfer characteristic. The non-linear transfer characteristic is achieved by changing the behaviour of the feedback loop of the electrical circuit at a predetermined level of input signal. The output of the circuit has a proportional relationship with the input until the input signal reaches this predetermined value, whereupon the behaviour of the feedback loop changes and the relationship of the output to the input of the circuit changes. While the input signal is above the predetermined value, the output of the circuit has a linear but disproportionate relationship with the input at a gradient different to that when the input signal is below the predetermined value. Further, the behaviour of the feedback loop changes to create a knee point in the response between the proportional and the linear parts of the characteristic. In this way, an overall non-linear transfer characteristic is produced by the electrical circuit, the transfer characteristic having with a well-defined knee point. The resolution of input signals below the knee point may be greater than the resolution of signals above the knee point.
    • 一种检测系统,其中采用单个传感器来检测大范围的参数。来自传感器的输出信号被馈送到具有反馈回路的电路的输入端,其中电路具有非线性传递特性 。 通过在预定电平的输入信号下改变电路的反馈回路的行为来实现非线性传递特性。 电路的输出与输入成比例关系,直到输入信号达到该预定值,反馈环路的行为发生变化,输出与电路输入的关系发生变化。 当输入信号高于预定值时,与输入信号低于预定值的斜率不同的梯度,电路的输出与输入端具有线性但不成比例的关系。 此外,反馈环路的行为改变以在特征的比例和线性部分之间的响应中产生拐点。 以这种方式,通过电路产生整体非线性传递特性,转印特性具有明确的拐点。 低于拐点的输入信号的分辨率可能大于拐点以上信号的分辨率。