CN206330727U - A LED light source stroboscopic detector - Google Patents

Abstract

The utility model relates to the field of photoelectric detection of lighting environment, and in particular to an LED light source stroboscopic detector. An optical signal automatic capture module generates a corresponding electrical signal according to a detected optical signal, and sends the electrical signal to a data processing module for time domain and frequency domain analysis to obtain the characteristics of the optical signal. A rotating device can make the photoelectric detector move in two planes that are angled to each other, and it makes a full circle movement in the first plane and at least a quarter circle movement in the second plane, so that the photoelectric detector can rotate 180 degrees in three-dimensional space to automatically capture the strongest optical signal of the LED light source in all directions. During the detection process, the detector automatically performs detection and data processing, and there is no need for measurement personnel to intervene on site, so as to avoid damage to the lighting environment of the measurement site, thereby improving the efficiency and accuracy of the detection.

Description

A LED light source stroboscopic detector

technical field

The invention relates to the field of photoelectric detection of lighting environments, in particular to an LED light source stroboscopic detector.

Background technique

Because LED light sources have the characteristics of long life, high luminous efficiency, high stability, good safety, no radiation, and low power consumption, LED light source lighting has been widely used. At present, the main method for detecting the flicker of LED light sources is the optical method, but the response of this method is slow, the test is inaccurate, and the optical fast measuring instrument is expensive. At present, there are detectors that use photodetectors to detect the strobe of LED light sources. However, general detectors can only measure optical signals in a single direction or manually adjust the measurement direction. Positioning, therefore, the measurement is time-consuming and the positioning error is large; in addition, due to the intervention of the surveyors on the site, which affects the measurement accuracy, traditional measurement equipment requires operators, computers and other auxiliary equipment to intervene in the measurement site, causing damage to the lighting environment of the measurement site and affecting measurement accuracy.

Contents of the invention

The purpose of the invention is to provide a LED light source stroboscopic detector with high detection efficiency and high precision.

The invention provides an LED light source stroboscopic detector, which includes an optical signal automatic capture module and a data processing module. The optical signal automatic capture module generates a corresponding electrical signal according to the detected optical signal, and sends the electrical signal to The data processing module performs time domain and frequency domain analysis to obtain the characteristics of the optical signal. The optical signal automatic capture module includes a photodetector and a rotating device, and the rotating device can make the photodetector move on two mutually angled planes. It makes a full-circle motion in the first plane and at least a quarter-circle motion in the second plane.

Wherein, the photodetector performs a full-circle motion on the first plane, and a half-circle motion on the second plane.

Wherein, the photodetector makes a full-circle motion in the horizontal plane and a half-circle motion in the vertical plane.

Wherein, the rotating device includes a track for the photodetector to move, and the photodetector moves along the track so as to make the above-mentioned at least a quarter of a circle movement, and the track movement realizes the photodetector to make the described full circle movement.

Wherein, the track performs full-circle motion or self-rotation.

Wherein, the photodetector makes a semi-circular motion on the track.

Wherein, the rotating device includes a hemispherical shell, the track is arranged on the surface of the hemispherical shell, and the axis perpendicular to the great circle in the hemispherical shell is the rotation axis of the track itself.

Wherein, the first plane is perpendicular to the second plane.

Wherein, two motors are included, the first motor drives the hemispherical shell to rotate, and the second motor drives the photodetector to move along the track.

Wherein, the data processing module includes an attenuation circuit, a sound card, an A/D conversion circuit and a processor, and the electrical signal is sent to the processor after passing through the attenuation circuit, the sound card, and the A/D conversion circuit.

Wherein, the photodetector is a PIN photodetector.

The beneficial effects are: the present invention creates an LED light source stroboscopic detector, the optical signal automatic capture module generates a corresponding electrical signal according to the detected optical signal, and sends the electrical signal to the data processing module for time domain and frequency analysis. Domain analysis to obtain the characteristics of the optical signal, the rotating device can make the photodetector move in two mutually angled planes, it makes a full circle movement in the first plane, and at least a quarter circle in the second plane Movement, so that the photodetector can rotate 180 degrees in three-dimensional space to automatically capture the strongest light signal from the LED light source in all directions. During the detection process, the detector automatically detects and performs data processing without the intervention of measuring personnel On-site, to avoid damage to the light environment of the measurement site, thereby improving the efficiency and accuracy of detection.

Description of drawings

Utilize accompanying drawing to further illustrate the present invention, but the embodiment in the accompanying drawing does not constitute any limitation to the present invention, for those of ordinary skill in the art, under the premise of not paying creative work, can also obtain according to following accompanying drawing Additional drawings.

Figure 1 is a schematic diagram of an LED light source stroboscopic detector.

Fig. 2 is a schematic structural diagram of the optical signal automatic capture module.

Fig. 3 is a front view of the optical signal automatic capture module.

1 to 3 include: 1—automatic optical signal capture module, 2—photodetector, 3—backing plate, 4—hemispherical shell, 5—track, 6—horizontal rotation axis.

detailed description

The present invention will be further described in conjunction with the following examples.

As shown in Figures 1 and 2, the present invention provides a LED light source stroboscopic detector, which detects LED light sources driven by a power supply with a current frequency of 0-1000 Hz and a voltage of 0-500V. The top surface of the detector is equipped with an optical signal automatic capture module 1, which is equipped with a photodetector 2, which is a PIN photodetector, which measures visible light with a wavelength range of 380nm-780nm, and the photodetector 2 After receiving the optical signal, it generates an electrical signal output, and then through the attenuation circuit, sound card, and A/D conversion circuit, it is sent to the processor for time domain and frequency domain analysis to obtain the characteristics of the optical signal, and output and display it in the virtual oscilloscope. Preferably, the processor adopts an arm9.0 embedded microprocessor.

The tester adopts wince6.0 operating system, and uses LabView software to develop a database management system and a virtual oscilloscope. The detector establishes a data management system with a database as the core on the LabView platform. Using the database, various data management functions can be easily realized, such as deleting data tables, reading data, querying data according to a certain condition, and adding and adding data. Modify and other functions.

Virtual oscilloscope includes signal acquisition and data analysis. The signal acquisition part implements the functions of acquisition parameter setting, acquisition mode selection, voltage calibration, trigger channel and level selection, etc., and simultaneously monitors the collected signals in the time domain and frequency domain, and displays the waveform in real time; the data analysis part realizes the signal frequency , amplitude, power spectrum measurement, data storage, reading and other functions.

As shown in Fig. 2 and Fig. 3, backing plate 3 is fixedly connected with hemispherical housing 4, and the surface of hemispherical housing 4 is provided with the track 5 that moves for photodetector 2, and the second motor drives photodetector 2 along track 5 Movement, the first motor drives the horizontal rotating shaft 6 to rotate so that the hemispherical housing 4 rotates around its axis perpendicular to the great circle, so that the photodetector 2 can do circular motion in the horizontal plane and do semi-circular motion in the vertical plane, so that The photodetector 2 can rotate 180 degrees in the three-dimensional space to automatically capture the strongest light signal from the LED light source in all directions. During the detection process, the detector automatically detects and performs data processing without the need for measuring personnel to intervene on-site, avoiding Cause damage to the light environment of the measurement site, thereby improving the efficiency and accuracy of detection.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art Personnel should understand that the technical solution of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solution of the present invention.

Claims (10)

1. A LED light source stroboscopic detector, comprising an optical signal automatic capture module and a data processing module, the optical signal automatic capture module generates a corresponding electrical signal according to the detected optical signal, and sends the electrical signal to the data processing The module performs time domain and frequency domain analysis to obtain the characteristics of the optical signal. It is characterized in that the optical signal automatic capture module includes a photodetector and a rotating device, and the rotating device can make the photodetector in two mutually angled planes motion, which makes a full circle in a first plane and at least a quarter circle in a second plane. 2 . The LED light source stroboscopic detector according to claim 1 , wherein the photodetector moves in a full circle on the first plane, and moves in a half circle on the second plane. 3 . 3. A LED light source stroboscopic detector according to claim 2, wherein the photodetector performs a full-circle motion on a horizontal plane and a half-circle motion on a vertical plane. 4. A LED light source stroboscopic detector according to claim 1, wherein the rotating device includes a track for the photodetector to move, and the photodetector moves along the track so as to make the above-mentioned at least four One-half of a circular motion, the orbital motion realizes the full circular motion of the photodetector. 5 . The LED light source stroboscopic detector according to claim 4 , the track moves in a full circle or rotates by itself. 6 . 6 . The LED light source stroboscopic detector according to claim 4 , wherein the photodetector moves in a semicircle on the track. 7 . 7. A kind of LED light source stroboscopic detector according to claim 5, is characterized in that, described rotating device comprises hemispherical shell, and described track is arranged on the surface of hemispherical shell, and in hemispheric shell, is perpendicular to great circle The axis is the axis of rotation on which the track itself rotates. 8. The LED light source stroboscope according to any one of claims 1 to 6, wherein the first plane is perpendicular to the second plane. 9. The LED light source stroboscopic detector according to claim 7, characterized in that it comprises two motors, the first motor drives the hemispherical shell to rotate, and the second motor drives the photodetector to move along the track. 10. A kind of LED light source stroboscopic detector according to claim 1, is characterized in that, data processing module comprises attenuation circuit, sound card, A/D conversion circuit and processor, and described electric signal passes through described attenuation circuit, The sound card and the A/D conversion circuit are sent to the processor.