36 results about "Phototesting" patented technology

A photoelectric detector is the core element of a photoelectric detection system; in special occasions, a photoelectric sensor is usually cooperated with a laser light source, so that damages to the photoelectric sensors by lasers are unavoidable. The invention belongs to the field of photoelectric test, and provides a measuring method and a device of a laser damaged silicon-based detector. The damage degree of a detector by lasers is judged according to the changes of the surface appearance, the light current, the dark current and the responsiveness of the detector before and after strong laser irradiation. Previously, the research to a laser irradiation detector mainly lays particular emphasis on the damage threshold and the damage mechanism, but the changes of the dark current, the light current and the responsiveness during the procedure for quantitatively researching the detector damage are not reported. The method and the device provided by the invention can detect the changes of electric parameters and surface appearance of the detector in the damage procedure in an on-line manner, have the advantages that the detection is overall, accurate and convenient, and are suitable for the damage detection of the silicon-based unit detector and the damage mechanism research of the laser induced detector. And the method and the device provided by the invention can be used in field of laser processing, quality detection of optical elements, development of lasers and the like.

The invention provides a photoelectric measurement method for utilizing a thermocouple to monitor SSL (Secure Socket Layer) lighting products. The method comprises the following steps: setting initial measurement conditions of an integrating sphere testing system and correcting the system; placing in the SSL lighting product, and testing according to the conventional steps of photoelectric testing, monitoring the temperature of the SSL lighting product by utilizing the thermocouple in the conventional photoelectric testing process of the SSL lighting product, and conducting photoelectric measurement after the thermocouple stably monitors the temperature of the system.. The invention further provides an integrating sphere measurement device for utilizing the thermocouple to monitor the temperature, which comprises an integrating sphere for measuring luminosity and chromaticity, and a thermocouple probe for measuring temperature at a preset position in the integrating sphere is arranged inside the integrating sphere. Temperature monitoring on the preset position in the integrating sphere to the SSL lighting products can be realized by arranging the temperature control system of the thermocouple, analysis on the structure and service life of the SSL lighting product can be effectively conducted by relationship between measurement results of luminosity, chromaticity and the like and the temperature.

The invention provides a photoelectric detection and information processing experiment system which combines light, machine, electricity and computation and reflects a design concept of integration of an photoelectric experiment teaching instrument and a photoelectric testing instrument and completes measurement of photoelectric characteristics of a photoelectric sensor module under a condition that no auxiliary test device exists so that a zero-configuration design is realized. The system is used as a photoelectric testing instrument and capable of measuring voltage, current and illuminance and the like. No personal computer is needed and software in a single-chip microcomputer module realizes control and management of the whole machine. The system adopts an embedding-type structure and design of a power-supply module, a breadboard module, a bus module and a system resource module provides system flexible expandability and overcomes a disadvantage of single function of the prior photoelectric information detection and processing experiment instruments and provides brand-new experiment resources to users so that experiments in a plurality of kinds of photoelectric and electronic information majors in photoelectric detection, single-chip microcomputer technology, special-purpose integrated circuit technology and digital circuit technology and the like so that multiple purposes of one machine are realized and device sources of a laboratory are saved.

The invention discloses a manufacturing method of an electroluminescence test electrode. The method comprises the following steps: selecting indium granular with a same size; using a fixed pressure to carry out constant force pressing indium granular on an epitaxial wafer; repeatedly carrying out heating, cooling, the constant force pressing to the indium granular so that a resistance between the indium granular and the epitaxial wafer can reach stability. The invention has the following advantages that: the manufacturing method is simple; usage is convenient; through repeatedly carrying out the heating, the cooling, the constant force pressing to the indium granular, repeatability of the test can be substantially increased and a repeatability standard deviation can be controlled in 0-4% so that a reliable and stable photoelectric test result can be obtained.

According to an acceleration test device and method for a quantum dot photoelectric detector under the vacuum low temperature, the test steps are simple, the efficiency is high, and the test error islow. The test device can simulate a vacuum low-temperature environment in the space, adopts ultraviolet rays to irradiate the photoelectric device to accelerate aging, automatically carries out periodic test and records data, and can obtain performance degradation test data of the quantum dot photoelectric detector in the simulated vacuum low-temperature environment. According to the test device,an ultraviolet lamp capable of continuously working is placed in a quantum dot photoelectric detector container, so that an ultraviolet accelerated aging function can be realized; a vacuum gauge and atemperature sensor are arranged outside the quantum dot photoelectric detector container, so that the temperature and vacuum degree change of a simulation environment can be monitored in real time, and the test condition can be monitored; an integrated automatic photoelectric test module can realize the automatic test of the photoelectric performance of the photoelectric detector, and has a complete system and functions. The test method based on the device is reasonable and can be realized.

The invention provides an area array CCD imaging and photoelectric coding combined fragment group testing device and method, and belongs to the technical field of photoelectric testing and weapon target range testing. The testing device comprises a main body frame, an area array CCD target and an upper computer; a line laser and a photosensitive diode coding array are arranged in the main body of the testing device; the line laser is located at the right end of the lower portion of the main body frame of the testing device; the laser light source and the photosensitive diode coding array at the right upper end of the main body frame of the testing device form a detection light curtain; and the area array CCD target is installed in the center of the bottom of the main body frame; and the field of view of the area array CCD target intersects with the laser detection light curtain; and the main body of the testing device is arranged in a ballistic direction and is a certain distance away from the explosion position of a warhead. According to the device and method, a fragment group generated by bullet explosion can be accurately matched and identified, fragment space distribution parameters can be measured in a high-precision manner, and effective data support is provided for target damage efficiency evaluation.

The invention, which belongs to the technical field of photoelectric testing, relates to an integral time control method of a CCD photoelectric detector, particularly to an adaptive light intensity type integral time control method of a CCD photoelectric detector. The method comprises the following steps that: step one, initial integral time is set as ti, wherein the ti is larger than tmin and smaller than tmax; step two, spectral signal [s1, s2,... and Sm] are collected and a spectral signal mean value savg is calculated; step three, a spectral noise sigma dark is collected and calculated; and step four, a size relation between the savg and delta. sigma dark is determined, wherein the delta expresses a dark noise influence factor, the integral time is set to be tj if the delta. sigma darkis larger than the savg, wherein the tj is larger than the tmin and smaller than the tmax and is not equal to the ti; and the step one is performed again; and if the savg is greater than or equal tothe delta. sigma dark, spectral signal denoising is carried out and then integral time setting is carried out. According to the method, the integral time is adaptively adjusted according to the illumination intensity and the integral time is adaptively adjusted by considering the influence of dark noises on the output signal; and the speed is high, the precision is high, and the method has adaptability. The method can be applied to automatic testing, rapid testing and other occasions.

The invention provides an automatic calibration system and method for a photoelectric detection target, and belongs to the technical field of photoelectric testing and weapon target range testing. The automatic calibration system comprises a measurement control platform, a signal detection platform and a controller; the measurement control platform and the signal detection platform are arranged at an interval, the photoelectric detection target is arranged on the measurement control platform, the signal detection platform receives light emitted by the photoelectric detection target, and the controller is electrically connected with the measurement control platform and the signal detection platform; and a detection light curtain of the photoelectric detection target is completely overlapped with a signal receiving assembly of the signal detection platform by adjusting the measurement control platform. According to the system, the included angle parameters of light curtains in a combined structure body of the photoelectric detection target can be accurately obtained, reliable data support is provided for accurate evaluation and subsequent research and development of weapon performance, the calibration precision and the use repeatability are improved, the time spent on calibration is shortened, batch production is easy, the universality is high, and the calibration result is reliable.

The invention provides a reflection type multi-target targeting coordinate testing device and method, and relates to the field of photoelectric testing and weapon shooting range testing. The reflection type multi-target targeting coordinate testing device comprises a main body frame and an upper computer, wherein the testing device is composed of two linear lasers, two cylindrical reflectors, a four-side rectangular reflector, two L-shaped photosensitive diode coding arrays and two signal acquisition instruments; the two linear lasers are located at the two ends of the lower portion of the testing device respectively; a laser light source forms a fan-shaped light curtain at an angle of 90 degrees through the cylindrical reflectors; and the fan-shaped light curtain is subjected to mirror reflection through a rectangular reflector method to form a detection light curtain. The reflection type multi-target targeting coordinate testing device and method can be used for testing the targeting coordinates of a plurality of small-caliber bullets of a continuous firing weapon with high precision, and reliable data support is provided for research of a high-radio-frequency continuous firing weapon.

The invention relates to the technical field of photoelectric testing, in particular to a splicable collimation-like light curtain light source device and a splicing method thereof. The invention aims to solve the problems of how to form a large-size safety light curtain and poor light source collimation in detection. According to the technical scheme, the device comprises a Powell prism support, a Powell prism, a point laser, a Fresnel lens, an upper clamping plate, a lower clamping plate and a diaphragm. The diaphragm piece is arranged between the upper clamping plate and the lower clamping plate and can move left and right along the lower clamping plate, the Fresnel lens and the Powell prism are arranged on the front side and the rear side of the diaphragm piece respectively, the focus of the Fresnel lens coincides with the focus of the Powell prism, and the point laser is arranged at the front end of the Powell prism. And emergent light coincides with the optical axis of the Powell prism, and the Fresnel lens, the point laser and the Powell prism are connected into a whole through the lower clamping plate and the upper clamping plate.

The invention discloses a light curtain array outer ballistic parameter testing device which comprises a light curtain array detector, an upper computer signal processing and control device and a photoelectric signal acquisition device. According to the invention, a non-contact photoelectric test principle is applied, the outer ballistic trajectory parameters after the projectile is launched can be accurately tested in a multi-light curtain array mode, the functions of traditional test equipment are enriched, and the device has the advantages of high test precision, simplicity and convenience in operation, high real-time performance and the like.

The invention provides a photoelectric testing device of a COB LED device. The photoelectric testing device comprises the COB LED device, an integrating sphere, a photoelectric sensor, an illuminometer, a COB LED tester and a display. When the integrating sphere carries out photoelectric testing on the COB LED device, photoelectricity of different colors of the COB LED device is tested, one-time testing is carried out on the color and the brightness of the COB LED, a relative value is read to serve as a standard value, the upper limit and the lower limit of the standard value are set, then the relative values of the to-be-tested COB LEDs are read in batches and compared with the standard value, and therefore good products and defective products are judged. The testing precision is effectively guaranteed, on-line testing and function testing of the COB LED tester are combined, testing stations do not need to be added, efficiency is improved, rapidness and full automation are achieved, and man-made missed judgment is avoided.

The invention discloses an in-situ frozen soil ice water component identification and dynamic tracing photoelectric test system and method. The test system comprises a photoelectric sensing test assembly, a data demodulation analysis system and a self-contained pulse power supply control system. The photoelectric sensing test assembly comprises a plurality of photoelectric sensing test units which are connected in series; the photoelectric sensing test unit comprises a variable-temperature ultra-weak fiber bragg grating sensing optical cable and a plurality of frequency domain reflection probes, and the frequency domain reflection probes correspond to the variable-temperature ultra-weak fiber bragg grating sensing optical cable measuring points. Through ultra-weak fiber grating temperature sensing and frequency domain reflection technologies, based on the pulse temperature change and multiphase heat dissipation principle, and through the relation between the frozen soil temperature response value and the soil body heat conductivity coefficient, the moisture content and the ice content, ice water components in the in-situ frozen soil are identified, and moisture field parameters are accurately measured; the frozen soil ice and water component identification and dynamic tracing are realized, the problem that parameters are difficult to measure due to unstable frozen soil properties is solved, and the method has the advantages of small disturbance, distribution, real-time performance and automation.

The embodiment of the invention discloses a cold trap device, which is used for a photoelectric test system and comprises a cold trap and a base assembly, the cold trap comprises a shell, the shell comprises an outer sleeve and an inner sleeve, the outer sleeve is sleeved outside the inner sleeve, the inner sleeve is provided with an accommodating cavity, and a vacuum interlayer is arranged between the outer sleeve and the inner sleeve; the base assembly comprises a sample base, a heat conduction plate and a heat insulation layer, the heat insulation layer is covered with the shell, the samplebase is arranged in the containing cavity, one end of the heat conduction plate is connected with the sample base, and the other end of the heat conduction plate is connected with external refrigeration equipment and used for adjusting the temperature in the containing cavity; wherein the cold trap further comprises a base, the base assembly is installed on the base, and the cold trap device is detachably installed on the photoelectric test system through the base.

The invention discloses a photo-induced electrochemical immunosensor for detecting cancer cells based on the self-assembled organic semiconductor material PC05 nanowire structure. The length of a nanowire is regulated by using a simple self-assembling method and the nanowire with the most suitable length is selected. The organic semiconductor nanowire has the perfect crystal structure to realize the charge transport well. Meanwhile, gold nanoparticles are deposited on the electrode by electrodeposition and the Fermi level of gold matches the PC05 nanowire well, so that the photoelectric signalof the sensor is enhanced. Moreover, because of the PC05 as a p type semiconductor, the dissolved oxygen in the detection solution can consume the excited electrons in photoelectric testing.

The invention discloses a photoelectric test system for measuring explosive combustion-to-detonation conversion. The photoelectric test system comprises a laser, an optical splitter, a photoelectric probe and a post-processing system which are connected in sequence, the laser is used for providing an initial signal source for the test system; the optical splitter is used for dispersing a high-power optical signal emitted by the laser into a plurality of sub-signals; the photoelectric probe is used for capturing wave signals generated after the to-be-measured explosive is ignited and converting the wave signals into optical signals; and the post-processing system is used for post-processing the optical signals acquired by the photoelectric probe. The laser is adopted as an initial signal source, the characteristics of high laser propagation speed and high response frequency are fully played, and the accuracy of a test result is greatly improved; a photoelectric probe is adopted as a signal catcher, so that a combustion wave signal and a detonation wave signal can be caught, and the combustion-to-detonation process of the explosive can be completely obtained during the test; and the photoelectric probe is simple in structure and low in cost.