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    Light measuring and indicating circuit
    61.
    发明授权
    Light measuring and indicating circuit 失效
    光测量和指示电路

    公开(公告)号：US4061431A

    公开(公告)日：1977-12-06

    申请号：US628654

    申请日：1975-11-04

    Applicant: Kenji Toyoda

    Inventor： Kenji Toyoda

    IPC: G01J1/44 ,  G01J1/18 ,  G03B7/091 ,  H03M1/00 ,  G01J1/42 ,  G03B7/08

    CPC classification number: G03B7/091 ,  G01J1/18 ,  H03M1/1057

    Abstract: A light measuring and indicating circuit utilizing indicating elements such as light-emitting diodes, to indicate corresponding light intensity levels. Intermediate levels are indicated without increasing the number of flip-flops employed in an activating circuit for the light-emitting diodes by intentionally causing the circuit to activate light-emitting diodes alternately. The activating circuit includes a reversible digital counter controlling the light-emitting diodes, two comparators for operating the counter reversibly in response to the comparison of light-dependent and standard signals, and a digital-to-analog converter which varies one or more of said signals in accordance with a counter output.

    Abstract translation: 利用诸如发光二极管的指示元件的光测量和指示电路来指示对应的光强度水平。 指示中间级别，而不增加用于发光二极管的激活电路中使用的触发器的数量，其有意地使电路交替地激活发光二极管。 激活电路包括控制发光二极管的可逆数字计数器，用于响应于光依赖和标准信号的比较而可逆地操作计数器的两个比较器和改变所述光源相关标准信号的一个或多个的数模转换器 信号按照计数器输出。

    Continuously monitoring ratiometer
    62.
    发明授权
    Continuously monitoring ratiometer 失效
    连续监测比率计

    公开(公告)号：US3981586A

    公开(公告)日：1976-09-21

    申请号：US578500

    申请日：1975-05-19

    Applicant: Larkin B. Scott

    Inventor： Larkin B. Scott

    IPC: G01R19/10 ,  G01J1/18 ,  G06G7/161 ,  G01J3/42

    CPC classification number: G01J1/18 ,  G06G7/161

    Abstract: An analytically significant ratio between timevarying magnitudes of signals is periodically monitored in recurring cycles which are each synchronized with a frequency generator. During every monitoring cycle, each signal relating to the numerator and denominator of the ratio, is integrated separately for a fixed number of generator cycles. Thereafter in each monitoring cycle, the output from the integrator of the denominator signal is applied at the input to the integrator of the numerator signal and the time taken by the latter to integrate back to its starting level is measured in proportion to the ratio of the signals. Either digital or analog time measurements may be utilized and the number of generator cycles over which the ratio is determined may include transition periods between each stage of integration.

    Abstract translation: 在循环周期中周期性地监视信号的时间变化幅度之间的分析显着的比率，每个循环周期都与频率发生器同步。 在每个监测周期中，每个有关比值的分子和分母的信号分别集成在固定数量的发生器周期内。 此后，在每个监测周期中，分母信号的积分器的输出在分子信号的积分器的输入处被施加，并且后者将其分离回到其起始电平所花费的时间与第 信号。 可以使用数字或模拟时间测量，并且确定该比率的发生器周期的数量可以包括在每个集成阶段之间的转换周期。

    Method and apparatus for measuring radiation absorption in a fluid specimen
    63.
    发明授权
    Method and apparatus for measuring radiation absorption in a fluid specimen 失效
    用于测量流体样品中辐射吸收的方法和装置

    公开(公告)号：US3678269A

    公开(公告)日：1972-07-18

    申请号：US3678269D

    申请日：1970-11-23

    Applicant: METROPHYSICS INC

    Inventor： MALEK FRITZ J

    IPC: G01J1/18 ,  G01N21/34

    CPC classification number: G01J1/18

    Abstract: Method and apparatus for measuring the radiation absorption of a fluid specimen and more particularly wherein an electrical signal proportional to the radiant energy received through the fluid specimen is stored and compared with an electrical signal derived from a known reference source, the difference between the signals producing an output signal that is a measure of radiant energy absorbed by the fluid specimen. A pair of capacitors store the electrical signals for comparison and are connected alternately and intermittently to a radiation sensing means by a first pair of gates. A second pair of gates alternately and intermittently energize a pair of radiant energy sources, one source being used as a reference and the other source emitting radiant energy that is transmitted through a specimen fluid undergoing measurement. Both pairs of gates are operated synchronously by a gating circuit that is controlled by a clock and a flip-flop circuit.

    Abstract translation: 更具体地说，用于测量流体样本的辐射吸收的方法和装置，更具体地，其中与通过流体样本接收的辐射能成比例的电信号被存储并且与从已知参考源导出的电信号进行比较，产生 输出信号，其是由流体样本吸收的辐射能的量度。 一对电容器存储用于比较的电信号，并且通过第一对门交替地和间歇地连接到辐射感测装置。 第二对门交替地并且间歇地激励一对辐射能源，一个源用作参考，另一个源发射通过正在进行测量的样本流体传输的辐射能。 两对门由一个由时钟和触发器电路控制的选通电路同步工作。

    Underwater camera as light sensor
    67.
    发明授权
    Underwater camera as light sensor 有权

    公开(公告)号：US12078533B2

    公开(公告)日：2024-09-03

    申请号：US17337004

    申请日：2021-06-02

    Applicant: TidalX AI Inc.

    Inventor： Barnaby John James

    IPC: G06K9/00 ,  G01B11/22 ,  G01J1/18 ,  G01J1/42 ,  G01J1/44

    CPC classification number: G01J1/4204 ,  G01B11/22 ,  G01J1/18 ,  G01J1/44

    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium that automatically performs actions in an aquaculture environment based on light sensed by underwater cameras. One of the methods includes obtaining images of a surface of water captured by a camera that faces upwards from a depth towards the surface of the water within an enclosure that encloses aquatic livestock. An ambient light metric is determined at the depth from the images of the surface of the water. A determination is made as to whether the camera satisfies one or more depth criteria. Based on determining that the depth of the camera satisfies the one or more depth criteria, it is determined that, based on the ambient light metric at the depth, one or more action criteria are satisfied, then initiating performance of an action to be performed for the aquatic livestock.

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