• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Use: in laser optics in the formation and maintenance of a given intensity distribution over the beam cross section. SUMMARY OF THE INVENTION: The light beam is directed to a multi-element photodetector, the measured intensity values for each element are compared with the set ones, sound signals are formed, the parameters of which depend on the deviations of the measured intensity values from the set 2 s, and 9 Cpf. Zil.
    公开号:SU1755719A3
    申请号:SU853911197
    申请日:1985-06-17
    公开日:1992-08-15
    发明作者:Шульц-Хенниг Йорг；Сиверс Хорст
    申请人:Др.-Инж. Рудольф Хелль Гмбх (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to laser optics and can be used in the formation and maintenance of a predetermined intensity distribution over the beam section.
    The known method and apparatus for determining the intensity distribution over the cross section of the light beam, in which the light beam is directed to a multielement optoelectric transducer, reads the intensity values for each element and forms an optical control signal. A disadvantage of the known technical solution is the low accuracy and the need to observe the visual indicator, which creates inconvenience in adjusting the intensity distribution over the cross section of the light beam.
    The aim of the invention is to improve the accuracy and convenience of control.
    This goal is achieved by the fact that in the method and device an acoustic signal is formed to control the intensity distribution over the cross section of the light beam.
    FIG. Figure 1 shows the main components of the device necessary for monitoring; in fig. 2, the preferred embodiment of the device of FIG. 1, in which the normalizing step is introduced; in fig. 3 shows another preferred embodiment of the device of FIG. 1 and 2, in which a threshold unit is additionally introduced, a second electrical frequency signal generator and an electrical switch,
    The method of controlling the intensity distribution in the cross section of the light beam is carried out as follows.
    The light beam 1, in which it is necessary to control the intensity distribution in section 2, perpendicular to the optical axis 3, is directed, for example, by means of a mirror 4 to the receiving platform of the multi-element opto-electric converter 5,
    WITH
    WITH
    9 ate
    XI
    Yu
    with
    read-in the first cyclic sequence from the transducer 5 the signals of the measured intensity values for each element, determine and memorize the deviations between the specified nominal and measured intensity values for each element and in the slower cyclic sequence read the deviations and for each element form acoustic oscillations , the height of the current, the volume, the frequency of the interruption, or the duration of the interruption, depend on the read deviations.
    In addition, the deviation values are pre-modified according to a monotonic function that eliminates the sign of the deviation.
    The values of the deviations are compared with the specified maximum permissible values and, if they are not exceeded, they are formed
    additional acoustic signal.
    Nominal intensity values, maximum permissible deviations and measured intensity values are normalized.
    The control device, in addition to these blocks, contains a contact generator, with a first clock frequency, a multiplexer 8, the control input of which is connected to the output of the generator 7, and the output is connected to the input of the analog-digital converter (ADC) 9, the block 10 of the memory of nominal intensities for individual elements, the read input of which is connected to the second output of the generator 7, the differentiating cascade 11, the inputs of which are connected to the outputs of the memory block 10 and the ADC 9 functional converter 12, the input of which is connected to the output d of the fencing cascade 11, the buffer memory 13, the second clock generator 14 with a lower clock frequency, the output of which is connected to the read input of the buffer memory 13, the recording input of which is connected to the second output of the clock generator 7, a digital signal converter (D / A) 15, an input which is connected to the output of the buffer storage device 13, and the output is connected to the control input of the controlled generator 16 electrical signals of the audio frequency, the output of which is connected to the input of the electroacus 17.
    In another embodiment (Fig. 2), a normalizing stage 18 is inserted between the ADC 9 and differentiating cascade 11, the second input of which is connected to the third output of the clock generator 7. The normalizing stage 18 can be made in the form of an electric switch 19, an adder 20 and a divider 21,
    A threshold unit 22, a second generator of electrical signals 23 of the audio frequency and an electrical switch 24, the first input of which is connected to the output of the controlled generator 16, the second input can
    with the output of the second generator 23, the output is connected to the input of the electric converter 17, and the control input with the output of the threshold unit 22.
    The threshold unit 22 may consist of
    a summing stage 25, a memory register 26 of predetermined maximum permissible values of the intensity deviations and a comparison block 27. Here, the input of the summing stage 25 is the input of the threshold unit 22, and the output of the comparison unit 27 is the output of the threshold unit 22.
    The device works as follows.
    Under the action of the clock generator signal 7, in the first cyclic sequence, from the output of multiplexer 8, the output of the beam intensity measured by an optoelectric converter 5 is applied to the ADC 9.
    individual elements b of cross section 2, which enter the differentiating cascade 11, where the deviations of the measured values from the nominal values arriving at the other input of the differentiating cascade 11 from the output of memory block 10 are calculated, then in the functional converter 12 (for example, in the squaring device ) the deviation is eliminated and the computed deviations are stored in the buffer memory 13.
    Under the action of the signal of the second clock generator 14c with a lower clock frequency, the deviation values are read from the buffer memory 13 and fed through the DAC 15 to the control input of the controlled oscillator 16 of an electrical audio frequency signal configured to control the frequency or amplitude of the signal or the frequency or duration of the interrupt generated signal. Next, the generated signal is converted in the electroacoustic converter 17 into an audible control signal audible by the operator, the pitch, loudness, frequency, or interruption duration of which depends on the deviations of the measured intensity values from the nominal ones.
    If the relative intensity distribution is not of absolute interest, then a normalizing step 18 can be entered into the device. At the same time, the signal from the third output of the clock generator 7 is switched by the electrical switch 19 at the end of each measurement cycle (the cycle is determined by the number of elements in the optoelectric converter five). Due to this, in each clear measurement cycle, the individual measured intensity values are summed in the adder 20 and stored in the memory for intermediate amounts of the adders 20, and in each odd measurement cycle, the normalized intensity values in the divider 21 are formed by dividing the individual measured values by the memorized total value,
    If the exact coincidence of the intensity distribution in the light beam with the nominal one is not required, a threshold unit 22, a second generator 23 of electrical audio signals and an electrical switch 24 can be entered into the device, which by the signal from the output of the threshold unit 22 does not exceed the deviations in the intensity distribution from the nominal the maximum allowable values off electroacoustic transducer from the generator 16 and connects it to the second generator 22, which generates a signal different from the signal and the generator 16, the speaker 17 of spyshen signal signaling that achieved the desired correspondence between the actual and the nominal intensity distribution,
    权利要求:
    Claims (10)
    [1]
    1. A method of controlling the intensity distribution in a cross section of a light beam, in which a light beam is directed to a multi-element optoelectric transducer and, in the first cyclic sequence, reads the signal of the measured intensity values for each element from the transducer and generates a control signal that differs in To increase the accuracy and convenience of control, the nominal intensity values for each element are set, the deviations of the measured values from nominal, in a slower cyclic sequence, the deviations are read, an electrical signal is generated for each element, at least one of the parameters of which is modified depending on the corresponding deviation, and the electrical signal is converted into an acoustic control signal.
    [2]
    2. A method according to claim 1, characterized in that the frequency, amplitude, frequency of interruption of the signal or the duration of the interruption are chosen as modifiable parameters of the electrical signal.
    [3]
    3. Method pop. 1 and 2, characterized in that, before modifying the parameters of the electrical signal, the deviation values are modified in accordance with a predetermined monotonous function of the sign-eliminating deviation value.
    [4]
    4. Method according to paragraphs. 1-3, which differs from 5 in that the deviation values obtained are compared with the predetermined maximum permissible deviation values and, if the predetermined maximum permissible value is not exceeded, an additional acoustic signal is generated.
    [5]
    5 The method according to paragraphs. 1-3, in which the resulting deviation values in the individual elements are summed up, the sum is compared with the predetermined maximum permissible deviation value and, if the predetermined maximum permissible value is not exceeded, an additional acoustic signal is generated.
    [6]
    6. Method according to paragraphs. 4-5, distinguishing - 0 with the fact that if the given value is not exceeded
    maximum permissible values turn off the main acoustic signal
    [7]
    7. Method according to paragraphs. 1-6, characterized in that the nominal intensity values and the maximum permissible deviation values are set as normalized values and the measured intensity values are normalized.
    [8]
    8. Device to control the distribution of intensity in cross section
    a light beam containing a multi-element optoelectric converter, the outputs of which are connected to the multiplexer inputs, the control input of which is connected to the output of the clock generator with the first clock frequency, and the output of the multiplexer is connected to the input of the analog-digital converter, characterized in that
    0 accuracy and convenience of control, a device has a memory block of nominal intensity values for individual elements, a differentiating cascade, a functional converter, a buffer memory, a second clock generator with a lower clock frequency, a digital-analog converter, a controlled electric sound signal generator, and an electroacoustic converter, with output
    The analog-digital converter is connected to the first input of the differentiating cascade, to the second input of which the output of the nominal value memory is connected, the output of the differentiating cascade is connected to the input of the function converter, the output of which is connected to the input of the buffer memory device, the output of which is connected to the input of the digital converter The output of which is connected to the control input of the controlled generator of electrical audio signals, the output of which is connected to the input of electrical an acoustic transducer, a second output connected to the clock input of the read block memory and nominal values to the input write buffer memory, the read input coupled to an output of the second oscillator.
    [9]
    9. The device according to claim 8, that is, so that between the analog-to-digital converter and the differentiating cascade a normalizing stage is introduced, the first input of which is connected to the output of the analog-digital converter, the second input is connected to the third output of the first clock generator, and the output is connected to the first input of the differentiating stage.
    [10]
    10. Device on PP. 8 and 9, that is, with the introduction of the threshold unit, the output of which is connected to the output of the functional converter, the second generator of electrical oscillations of the audio frequency and located between the controlled generator of electrical oscillations of the audio frequency and the electroacoustic converter electrical switch, the first input of which is connected to the output of a controlled oscillator of electrical oscillations of the audio frequency, the second input is connected to the output of the second oscillator of electrical oscillations The output is connected to the input of the electroacoustic converter, and the control input is connected to the output of the threshold unit.
    11, The device according to claim 10, exe and so that the threshold blrk consists of
    the summing stage whose input is the input of the threshold block, from the memory register of specified maximum tolerances of the intensity and the comparison unit, the first input of which is connected to the output of the summing step, the second input is connected to the output of the memory register of the maximum allowable values of intensity deviations, and the output of the threshold block.
    FIG. one
     I it
    eight
    18
    Iji
    77
    15
    sixteen
    H
    17
    FIG 2
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3907435A|1972-09-29|1975-09-23|Laser Alignment|Light beam alignment target and method|
    US3972622A|1974-09-19|1976-08-03|New Hampshire Ball Bearings, Inc.|Electronic survey target|
    US4081216A|1976-06-25|1978-03-28|The United States Of America As Represented By The Department Of Health, Education And Welfare|Ultrasonic transducer calibration|
    US4126834A|1977-06-27|1978-11-21|Gte Sylvania Incorporated|Bulk wave bragg cell|
    DE2850743C3|1978-11-23|1981-10-01|Messerschmitt-Bölkow-Blohm GmbH, 8000 München|Method and device for measuring the deviation of the transmission beam from the optical axis of the receiving telescope in a lidar device|
    JPS6244330B2|1980-12-29|1987-09-19|Paionia Bideo Kk|US4945221A|1987-04-24|1990-07-31|Laser Alignment, Inc.|Apparatus and method for controlling a hydraulic excavator|
    JPS6415632A|1987-07-09|1989-01-19|Sonoike Mfg|Laser beam analyzer|
    JPH0243511A|1988-08-04|1990-02-14|Fuji Electric Co Ltd|Method for aligning image sensor pair with optical system|
    JPH04110023U|1991-03-06|1992-09-24|
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    JP2007000316A|2005-06-23|2007-01-11|Hitachi Medical Corp|X-ray ct apparatus|
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    优先权:
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    EP84106945A|EP0165325B1|1984-06-18|1984-06-18|Method and appliance for the acoustic control of the adjustment of optical devices|
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