Lamp light flicker inspection device

Abstract

The utility model discloses a lamp light flicker inspection device, which is formed by connecting a light sensing gun and an oscilloscope, the light sensing gun comprises a light sensing element and a pre-stage circuit, the light sensing element is in signal connection with the oscilloscope through the pre-stage circuit, the light sensing gun picks up light change signals of a detected light source through the light sensing element, and the detected light source is connected with the oscilloscope through the pre-stage circuit. And the optical signal is converted into a voltage signal through pre-stage circuit signal processing, and then the voltage signal is transmitted to an oscilloscope for processing. The utility model has the following characteristics: (1) naked eyes can be prevented from being in direct contact with the light stimulation of the LED, and the eyes of a tester are effectively protected; (2) the operation is simple, and the test can be carried out by any employee through slightly explaining and giving a standard; (3) standard measurement can be given, and qualification and disqualification are judged; (4) contact and connection with the lamp to be tested are avoided, and the test efficiency is high; (5) the cost is low, and the method is suitable for production and duplication; and (6) the frequency and fluctuation of the light at any moment can be observed by combining an oscilloscope.

Description

Technical Field

[0001] This utility model relates to the field of lighting manufacturing, specifically to a device for testing the flickering of lighting fixtures. Background Technology

[0002] In lighting fixture production, there is an inspection process that requires checking for light flickering and jitter. LED driver production, especially dimming driver production, also requires checking for stable drive output and smooth dimming. Currently, there are three methods for inspecting light flickering in lighting fixtures:

[0003] I. Observing with the naked eye has the following drawbacks:

[0004] 1. Highly experienced quality inspectors are required;

[0005] 2. Prolonged direct exposure to LED lights can damage the eyes. Wearing sunglasses can alleviate the irritation, but the dimming effect will not be noticeable.

[0006] 3. Visual inspection based on feeling and experience lacks a unified standard (there is no evaluation standard).

[0007] Second, using an oscilloscope to directly connect to the driver output to test the current and voltage waveforms requires a wired connection to the product under test, resulting in low testing efficiency and not providing the final LED lighting effect, which has some deviation.

[0008] 3. Using a stroboscope: Although it can also display waveforms and flicker indexes, due to insufficient CPU processing and RAM storage, it cannot fully store and evaluate low-frequency jitter and flicker. Utility Model Content

[0009] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lamp light flicker testing device.

[0010] The technical solution of this utility model is as follows:

[0011] A lamp light flicker testing device is composed of a light sensor gun and an oscilloscope. The light sensor gun includes a light sensing element and a pre-amplifier circuit. The light sensing element is connected to the oscilloscope circuit for signal processing. The light sensor gun picks up the light change signal of the light source under test through the light sensing element. After signal processing by the pre-amplifier circuit, the light signal is converted into a voltage signal and then sent to the oscilloscope for processing.

[0012] Furthermore, the light sensor is connected to the oscilloscope via a shielded cable.

[0013] Furthermore, the light-sensing element utilizes a solar panel.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] (1) It can avoid direct contact with the light of LEDs, effectively protecting the eyes of testers;

[0016] (2) It is easy to operate; any employee can test it after a brief explanation and by providing the standard.

[0017] (3) Standards can be provided to measure and judge whether it is qualified or unqualified;

[0018] (4) It does not contact or connect with the lamp under test, resulting in high testing efficiency;

[0019] (5) Low cost, suitable for production and replication applications;

[0020] (6) Combined with an oscilloscope, the frequency and fluctuation of the light can be observed at any time. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This utility model provides a system block diagram of a lamp light flicker testing device. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] To illustrate the technical solution described in this utility model, specific embodiments are described below.

[0025] Example

[0026] Please see Figure 1 This embodiment provides a lamp light flicker testing device, which consists of a light sensor 1 and an oscilloscope 2 connected by a shielded cable 3.

[0027] The light sensor 1 includes a light sensor element and a pre-amplifier circuit 12. The light sensor element is connected to the oscilloscope 2 via the pre-amplifier circuit 12. In this embodiment, the light sensor element uses a solar panel 11, such as an amorphous silicon solar panel or a polycrystalline silicon monocrystalline silicon solar panel. Of course, a photoresistor can also be used.

[0028] Its specific working principle is as follows:

[0029] In use, the solar panel 11 picks up the light change signal of the light source 10 under test, and then the signal is processed by the pre-amplifier circuit 12 to convert the light signal into a voltage signal and then sent to the oscilloscope 2 for processing, so as to realize the real-time and complete conversion of light changes such as light jitter / flicker / step jump unevenness into a visible and quantifiable waveform display.

[0030] In summary, this lamp flicker testing device has the following characteristics:

[0031] (1) It can avoid direct contact with the light of LEDs, effectively protecting the eyes of testers;

[0032] (2) It is easy to operate; any employee can test it after a brief explanation and by providing the standard.

[0033] (3) Standards can be provided to measure and judge whether it is qualified or unqualified;

[0034] (4) It does not contact or connect with the lamp under test, resulting in high testing efficiency;

[0035] (5) Low cost, suitable for production and replication applications;

[0036] (6) Combined with an oscilloscope, the frequency and fluctuation of the light can be observed at any time.

[0037] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the flickering of light fixtures, characterized in that: It consists of a light sensor and an oscilloscope. The light sensor includes a light sensor element and a pre-amplifier circuit. The light sensor element is connected to the oscilloscope circuit for signal transmission. The light sensor element picks up the light change signal of the light source under test. After signal processing by the pre-amplifier circuit, the light signal is converted into a voltage signal and then sent to the oscilloscope for processing.

2. The lamp light flicker testing device according to claim 1, characterized in that: The optical sensor and the oscilloscope are connected by a shielded cable.

3. The lamp light flicker testing device according to claim 1, characterized in that: The light sensor uses a solar panel.

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