Light transmission performance testing device for LED signal modulation

Abstract

The utility model discloses a light transmission performance testing device for LED signal modulation, which comprises an integrated test module, a signal analysis module and a display module, a signal generation module, an LED light-emitting module and a light transmission module are arranged in the integrated test module, the signal generation module comprises a signal generator and a modulation circuit, and the signal analysis module comprises a signal analysis module and a light transmission module. The signal generator is used for generating electric signals with different frequencies, amplitudes and modulation modes, the LED light-emitting module comprises an LED light source and an optical fiber driving board, and the LED light source is used for converting the modulated electric signals into optical signals; according to the utility model, the optical transmission performance of LED signal modulation can be comprehensively tested, the number and the occupied area of test equipment are reduced, the test efficiency is improved, the display module can synchronously display oscillogram, bit error rate curve, power loss data and the like in real time, testers can visually know the optical transmission performance, and the test efficiency is improved. And the test result can be conveniently analyzed and judged.

Description

Technical Field

[0001] This utility model relates to the field of optical transmission performance testing technology, specifically to an LED signal modulation optical transmission performance testing device. Background Technology

[0002] The optical transmission performance of LED signal modulation is affected by various factors, such as signal frequency, amplitude, modulation method, and losses and bit errors during optical transmission. Traditional testing equipment often has limited functionality, requiring multiple devices to perform signal generation, optical signal conversion, transmission monitoring, and signal analysis. This not only increases testing costs and equipment footprint but also reduces testing efficiency. Furthermore, existing testing equipment struggles to simulate modulation signals under different communication protocols, failing to meet diverse testing needs. Additionally, it lacks real-time adjustment and monitoring of LED luminous power, as well as real-time display and analysis of optical transmission performance indicators, causing significant inconvenience for testing personnel. Therefore, those skilled in the art provide an LED signal modulation optical transmission performance testing device to address the problems mentioned in the background. Utility Model Content

[0003] The purpose of this invention is to provide a test device for the optical transmission performance of LED signal modulation, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An LED signal modulation optical transmission performance testing device includes an integrated testing module, a signal analysis module, and a display module. The integrated testing module internally includes a signal generation module, an LED light-emitting module, and an optical transmission module. The signal generation module includes a signal generator and a modulation circuit. The signal generator generates electrical signals of different frequencies, amplitudes, and modulation methods. The modulation circuit modulates the electrical signals onto the LED. The LED light-emitting module includes an LED light source and an optical fiber driver board. The LED light source converts the modulated electrical signals into optical signals. The optical fiber driver board is electrically connected to the LED light source and provides stable drive current and voltage, controls the light emission state, and adjusts and monitors the light emission power in real time. The optical transmission module includes an optical fiber and an optical connector. One end of the optical connector is optically coupled to the LED light source, and the other end is connected to the optical fiber, for efficiently coupling the optical signal to the optical fiber for transmission. The optical fiber serves as the optical signal transmission medium.

[0006] Furthermore, the signal analysis module includes an optical receiving module and a signal analysis module. The optical receiving module includes a photodetector and an amplification circuit. The photodetector is optically coupled to the end of the optical fiber and is used to convert the transmitted optical signal into an electrical signal. The amplification circuit is electrically connected to the photodetector and is used to amplify the weak electrical signal.

[0007] Furthermore, the signal analysis module includes an oscilloscope, a bit error rate meter, and an optical power meter. The oscilloscope is used to monitor the waveform, frequency, and amplitude parameters of the electrical signal in real time. The bit error rate meter is used to measure the bit error rate during optical transmission. The optical power meter is used to detect the optical signal power and calculate the transmission loss.

[0008] Furthermore, the display module is an LED display, electrically connected to the signal analysis module, used to display test results and performance indicators in real time.

[0009] Furthermore, the signal analysis module is connected to the display module via a data interface, supporting real-time synchronous display of waveform graphs, bit error rate curves, and power loss data. The data interface includes HDMI, USB, or Ethernet interfaces.

[0010] Furthermore, the signal generator can generate sine wave, square wave, and pulse wave electrical signals, and supports parameter configuration to simulate modulation signals under different communication protocols.

[0011] By adopting the above technical solution

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By integrating functions such as signal generation, modulation, optical signal conversion, transmission, reception, analysis, and result display, this device can comprehensively test the optical transmission performance of LED signal modulation, reducing the number of test devices and floor space required, and improving test efficiency. The signal generator can generate various types of electrical signals and supports parameter configuration, simulating modulation signals under different communication protocols. This allows the device to adapt to a variety of different application scenarios and test requirements.

[0014] 2. The fiber optic driver board can adjust and monitor the luminous power of the LED light source in real time. At the same time, the signal analysis module can monitor various parameters of the electrical signal and indicators such as the bit error rate and power loss of optical transmission in real time, which helps to discover and solve problems in the optical transmission process in a timely manner. The display module can display waveforms, bit error rate curves and power loss data in real time, allowing testers to intuitively understand the optical transmission performance and facilitate the analysis and judgment of test results. Attached Figure Description

[0015] Figure 1A flowchart illustrating the operation of an LED signal modulation optical transmission performance testing device;

[0016] Figure 2 This is a structural block diagram of a test device for testing the optical transmission performance of LED signal modulation.

[0017] Figure 3 This is a schematic diagram of the integrated test module in an LED signal modulation optical transmission performance testing device.

[0018] In the diagram: 1. Integrated test module; 2. Signal analysis module; 3. Display module. Detailed Implementation

[0019] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model is further described below in conjunction with specific embodiments. In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0020] Please see Figures 1-3This utility model provides an embodiment of an LED signal modulation optical transmission performance testing device, comprising an integrated testing module 1, a signal analysis module 2, and a display module 3. The integrated testing module 1 includes a signal generation module, an LED light-emitting module, and an optical transmission module. The signal generation module includes a signal generator and a modulation circuit. The signal generator generates electrical signals of different frequencies, amplitudes, and modulation methods. The modulation circuit modulates the electrical signals onto the LED. The LED light-emitting module includes an LED light source and an optical fiber driver board. The LED light source converts the modulated electrical signals into optical signals. The optical fiber driver board is electrically connected to the LED light source and provides stable driving current and voltage, controls the light emission state, and adjusts and monitors the light emission power in real time. The optical transmission module includes an optical fiber and an optical connector. One end of the optical connector is optically coupled to the LED light source, and the other end is connected to the optical fiber, efficiently coupling the optical signal to the optical fiber for transmission. The optical fiber serves as the optical signal transmission medium. The signal generator generates electrical signals of different frequencies, amplitudes, and modulation methods, such as sine waves, square waves, and pulse waves. These electrical signals can simulate modulation signals under different communication protocols. The modulation circuit then modulates these electrical signals onto the LED. The system completes signal modulation, and the LED light source converts the modulated electrical signal into an optical signal. The fiber optic driver board provides stable driving current and voltage for the LED light source, controls its light emission state, and can also adjust and monitor the light emission power in real time. The optical connector efficiently couples the optical signal into the optical fiber, which serves as the transmission medium for the optical signal. It integrates functions such as signal generation, modulation, optical signal conversion, transmission, reception, analysis, and result display, enabling comprehensive testing of the optical transmission performance of LED signal modulation. This reduces the number of testing devices and the floor space required, and improves testing efficiency. The signal generator can generate various types of electrical signals and supports parameter configuration, simulating modulation signals under different communication protocols. This allows the device to adapt to various application scenarios and testing requirements.

[0021] In this embodiment, the signal analysis module 2 includes an optical receiving module and a signal analysis module. The optical receiving module includes a photodetector and an amplification circuit. The photodetector is optically coupled to the end of an optical fiber and is used to convert the transmitted optical signal into an electrical signal. The amplification circuit is electrically connected to the photodetector and is used to amplify the weak electrical signal. The signal analysis module includes an oscilloscope, a bit error rate meter, and an optical power meter. The oscilloscope is used to monitor the waveform, frequency, and amplitude parameters of the electrical signal in real time. The bit error rate meter is used to measure the bit error rate during optical transmission. The optical power meter is used to detect the optical signal power and calculate the transmission loss. The display module 3 is an LED display, electrically connected to the signal analysis module, and is used to display test results and performance indicators in real time. The signal analysis module is connected to the display module 3 through a data interface, supporting real-time synchronous display of waveform graphs, bit error rate curves, and power loss data. The data interface includes HDMI and USB. The signal generator, via an Ethernet interface, can generate sine, square, and pulse electrical signals and supports parameter configuration to simulate modulation signals under different communication protocols. The photodetector is optically coupled to the end of the optical fiber, converting the transmitted optical signal into an electrical signal. Since the converted electrical signal is relatively weak, an amplification circuit amplifies it. The amplified electrical signal is then sent to the signal analysis module, where an oscilloscope monitors the waveform, frequency, and amplitude parameters of the electrical signal in real time; a bit error rate meter measures the bit error rate during optical transmission; and an optical power meter detects the optical signal power and calculates transmission loss. The signal analysis module is connected to the display module 3 via data interfaces such as HDMI, USB, or Ethernet, displaying test results and performance indicators, such as waveforms, bit error rate curves, and power loss data, synchronously in real time on the LED display. The fiber optic driver board can adjust and monitor the LED in real time. The light source's luminous power is monitored, and the signal analysis module can monitor various parameters of the electrical signal and indicators such as the bit error rate and power loss of optical transmission in real time. This helps to promptly identify and resolve problems that occur during optical transmission. The display module 3 can synchronously display waveforms, bit error rate curves, and power loss data in real time, allowing testers to intuitively understand the optical transmission performance and facilitating the analysis and judgment of test results.

[0022] During operation, the signal generator produces various types of electrical signals that can simulate different communication protocols. These signals are then modulated by a modulation circuit and applied to the LED. The LED light source converts the modulated electrical signals into optical signals, which are then stably driven by a fiber optic driver board that monitors the luminous power in real time. The optical signals are coupled into the optical fiber for transmission via an optical connector. The transmitted optical signals are then converted into weak electrical signals by a photodetector, amplified by an amplifier circuit, and subsequently sent to a signal analysis module. An oscilloscope, a bit error rate meter, and an optical power meter are used to monitor the electrical signal parameters, measure the bit error rate, detect the optical signal power, and calculate the transmission loss. Finally, the signal analysis module displays the waveform graph, bit error rate curve, power loss data, and other test results and performance indicators in real time on the LED display via a data interface.

[0023] This specification describes embodiments, but not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for testing the optical transmission performance of LED signal modulation, characterized in that, The system includes an integrated test module (1), a signal analysis module (2), and a display module (3). The integrated test module (1) is equipped with a signal generation module, an LED light-emitting module, and an optical transmission module. The signal generation module includes a signal generator and a modulation circuit. The signal generator is used to generate electrical signals of different frequencies, amplitudes, and modulation methods. The modulation circuit is used to load the electrical signals onto the LED for signal modulation. The LED light-emitting module includes an LED light source and an optical fiber driver board. The LED light source is used to convert the modulated electrical signals into optical signals. The optical fiber driver board is electrically connected to the LED light source and is used to provide stable driving current and voltage, control the light-emitting state, and adjust and monitor the light-emitting power in real time. The optical transmission module includes an optical fiber and an optical connector. One end of the optical connector is optically coupled to the LED light source, and the other end is connected to the optical fiber. The optical fiber is used to efficiently couple the optical signals to the optical fiber for transmission. The optical fiber serves as the optical signal transmission medium.

2. The LED signal modulation optical transmission performance testing device according to claim 1, characterized in that, The signal analysis module (2) includes an optical receiving module and a signal analysis module. The optical receiving module includes a photodetector and an amplification circuit. The photodetector is optically coupled to the end of the optical fiber and is used to convert the transmitted optical signal into an electrical signal. The amplification circuit is electrically connected to the photodetector and is used to amplify the weak electrical signal.

3. The LED signal modulation optical transmission performance testing device according to claim 2, characterized in that, The signal analysis module includes an oscilloscope, a bit error rate meter, and an optical power meter. The oscilloscope is used to monitor the waveform, frequency, and amplitude parameters of the electrical signal in real time. The bit error rate meter is used to measure the bit error rate during optical transmission. The optical power meter is used to detect the optical signal power and calculate the transmission loss.

4. The LED signal modulation optical transmission performance testing device according to claim 2, characterized in that, The display module (3) is an LED display, which is electrically connected to the signal analysis module and is used to display test results and performance indicators in real time.

5. The LED signal modulation optical transmission performance testing device according to claim 2, characterized in that, The signal analysis module is connected to the display module (3) through a data interface, and supports real-time synchronous display of waveform diagrams, bit error rate curves and power loss data. The data interface includes HDMI, USB or Ethernet interfaces.

6. The LED signal modulation optical transmission performance testing device according to claim 1, characterized in that, The signal generator can generate sine wave, square wave, and pulse wave electrical signals, and supports parameter configuration to simulate modulation signals under different communication protocols.

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