Method and device for laser double-pulse detecting
A detection device and detection method technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of low cost, inaccuracy, low accuracy, etc., and achieve the effects of unique method, low background noise, and high accuracy
Inactive Publication Date: 2013-03-20
中国人民解放军济南军区72465部队
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Problems solved by technology
This method is simple and the cost of equipment is low, but when detecting the upper limit of the threshold, it is easily affected by factors such as weather and clouds, resulting in low accuracy
At present, there is no accurate and low-cost method and device for checking the upper threshold, that is, the double pulse output of the laser.
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[0018] The following non-limiting examples are used to further explain and illustrate the technical solution.
[0019] A laser double pulse detection method and device, such as figure 1 As shown, it is composed of two parts connected by photovoltaic solar panels and double monostable modules.
[0020] The photovoltaic solar panel adopts a monocrystalline silicon solar panel with high photoelectric conversion efficiency, which is processed into a circular shape with a diameter of 6 cm, and its surface is coated with an infrared film layer with a cut-off wavelength of 900 nm.
[0021] The core of the dual monostable module adopts SN74HC123A dual retriggerable monostable multivibrator, the external resistance and capacitance components are selected as Rt is 43KΩ, and Ct is 47μF, so that the monostable pulse width time is about 2s. The pulse of this time width can be directly used as the driving signal of the LED to meet the needs of human eyes to observe and judge.
[0022] Con...
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The invention relates to a method and a device for laser double-pulse detecting. The device is composed of a photovoltaic solar energy plate and a double single-stable module. The working process includes laser emitted by a laser distance measuring device directly shining on the photovoltaic solar energy plate, and transforming laser pulse signals to voltage pulse signals and outputting the voltage pulse signals to the double single-stable module, after a first voltage pulse signal is accepted by the double single-stable module, a MONO 1 outputting high levels at the A end, meanwhile removing a resetting state of a MONO 2, and after a second voltage pulse signal is accepted by the double single-stable module, the MONO 2 outputting high level signals at the B end, namely showing an acceptance of laser double-pulse. The method and the device for laser double-pulse detecting take the photovoltaic solar energy plate which is coated with an infrared membrane layer as a photoelectric conversion device and catch laser pulse signals with low background noise and a large action area, thereby being unique in method, practical and effective, low in cost, convenient to carry, high in accuracy of laser pulse detection and provided with flexible back end configuration.
Description
technical field [0001] The invention belongs to the field of laser detection, and in particular relates to a laser double pulse detection method and device. Background technique [0002] In the pulse laser ranging technology, in order to ensure the accuracy of laser ranging, the laser range finder is required to only emit a single laser pulse, and cannot emit double or multiple pulses. Generally, the laser of the pulsed laser range finder has a single-pulse plateau range, and no double-pulse and multi-pulse will be emitted within this range. The single-pulse plateau range is an important technical index of pulsed laser rangefinder lasers. The lower limit of the threshold of the range of the single pulse plateau corresponds to no laser output from the laser of the pulsed laser rangefinder, and the upper limit of the threshold corresponds to the emission of double pulses by the laser of the pulsed laser rangefinder. In the production and processing of pulsed laser rangefinde...
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IPC IPC(8): G01S7/497
Inventor 陈烁刘明明孙香冰展浩华焦现炜田柯文
Owner 中国人民解放军济南军区72465部队