Stroboscopic illuminometer with display evaluation function

Abstract

The utility model discloses a stroboscopic illuminometer with display evaluation, which relates to the technical field of stroboscopic illuminometers and comprises an optical acquisition module, a signal processing module, a power supply module and an evaluation display module. The signal processing module is composed of a microprocessor, an illumination acquisition unit, a frequency acquisition unit and an amplitude acquisition unit, the evaluation display module is composed of an LCD display screen and an LED indicating lamp, and the power supply module is used for supplying power to the optical acquisition module, the signal processing module and the evaluation display module. Compared with a traditional detection device, the illumination and stroboscopic functions are integrated in a single device, good portability is achieved, meanwhile, by matching with emoticon changes in the evaluation display module, the measurement result can be clear at a glance, the illumination environment quality can be judged without professional knowledge, the use difficulty is reduced, and use is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of stroboscopic illuminance meter technology, and in particular to a stroboscopic illuminance meter with display evaluation. Background Technology

[0002] Traditional light measurement equipment typically only measures illuminance or flicker parameters individually, failing to meet both measurement needs simultaneously. This necessitates users carrying multiple devices for comprehensive lighting environment assessments. While existing illuminance meters can accurately measure light intensity, they lack flicker effect assessment capabilities; dedicated flicker measurement equipment is often bulky and complex to operate. Furthermore, existing devices primarily display numerical values, lacking intuitive evaluation feedback, making it difficult for ordinary users to quickly determine whether measurement results meet healthy lighting standards.

[0003] With the widespread adoption of LED lighting, flicker issues have become increasingly concerning. Prolonged exposure to high-flicker lighting can lead to health problems such as visual fatigue and headaches. Therefore, the market urgently needs an integrated measurement device that combines illuminance and flicker measurement functions and provides intuitive evaluation feedback.

[0004] Therefore, this application proposes a stroboscopic illuminance meter with display evaluation to solve the above problems. Utility Model Content

[0005] This invention provides a stroboscopic illuminance meter with display evaluation to solve the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, this utility model provides a stroboscopic illuminance meter with display evaluation, including an optical acquisition module, a signal processing module, a power supply module, and an evaluation display module. The optical acquisition module consists of a silicon photodiode, a light diffuser, a narrowband filter, and a photodiode. The signal processing module consists of a microprocessor, an illuminance acquisition unit, a frequency acquisition unit, and an amplitude acquisition unit. The evaluation display module consists of an LCD screen and LED indicator lights. The power supply module is used to supply power to the optical acquisition module, the signal processing module, and the evaluation display module.

[0007] Preferably, the silicon photodiode, light diffuser, narrowband filter, and illuminance acquisition unit are used to acquire illuminance parameters and transmit them to the microprocessor.

[0008] Preferably, the photodiode, frequency acquisition unit, and amplitude acquisition unit are used to acquire frequency parameters and amplitude.

[0009] Parameters are sent to the microprocessor.

[0010] Preferably, the LCD display screen includes an illuminance evaluation screen and a flicker evaluation screen. Preferably, the power supply module is a rechargeable lithium battery.

[0011] Compared with related technologies, the stroboscopic illuminance meter with display evaluation provided by this utility model has the following beneficial effects:

[0012] 1. Functional Integration: For the first time, illuminance measurement and flicker detection functions are integrated into a single portable device, solving the pain point for users who need to carry multiple devices;

[0013] 2. Intuitive evaluation: The innovative smiley face symbol evaluation system makes the measurement results clear at a glance, allowing people to judge the quality of the lighting environment without professional knowledge;

[0014] 3. Health-oriented: Evaluation standards are set based on the latest research findings to guide users to pay attention to a healthy lighting environment;

[0015] 4. Portable design: Optimized circuit design to achieve miniaturization, making it easy to carry and use;

[0016] 5. Intelligent prompts: When an unhealthy lighting environment is detected, the device will automatically prompt and provide improvement suggestions. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the overall module structure of a stroboscopic illuminance meter with display evaluation proposed in this utility model;

[0018] Figure 2 is a schematic diagram of the signal processing module structure of a stroboscopic illuminance meter with display evaluation proposed in this utility model;

[0019] Figure 3 is a schematic diagram of the LCD display structure of a stroboscopic illuminance meter with display evaluation proposed in this utility model.

[0020] The diagram is labeled as follows: 1. Optical acquisition module; 11. Silicon photodiode; 12. Light diffuser; 13. Narrowband filter; 14. Photodiode; 2. Signal processing module; 21. Microprocessor; 22. Illuminance acquisition unit; 23. Frequency acquisition unit; 24. Amplitude acquisition unit; 3. Power supply module; 4. Evaluation display module; 41. LCD display screen; 411. Illuminance evaluation group; 412. Strobe evaluation group; 42. LED indicator. Detailed Implementation

[0021] As illustrated in Figures 1-3, this utility model includes an optical acquisition module 1, a signal processing module 2, a power supply module 3, and an evaluation display module 4. The optical acquisition module 1 comprises a silicon photodiode 11, a light diffuser 12, a narrowband filter 13, and a photodiode 14. The signal processing module 2 comprises a microprocessor 21, an illuminance acquisition unit 22, a frequency acquisition unit 23, and an amplitude acquisition unit 24. The evaluation display module 4 comprises an LCD screen 41 and LEDs.

[0022] The indicator light 42 is composed of the power supply module 3, which is used to supply power to the optical acquisition module 1, the signal processing module 2 and the evaluation display module 4. The acquisition module 1, the signal processing module 2 and the power supply module 3 are all installed inside the stroboscopic illuminance meter housing (not shown in the figure), while the evaluation display module 4 is embedded on the outer surface of the housing. The LED indicator light 42 is used to provide fast status feedback.

[0023] The power supply module 3 is a rechargeable lithium battery with a low power consumption design to ensure long-term operation. The rechargeable lithium battery can power the electronic components in the optical acquisition module 1, signal processing module 2, and evaluation display module 4.

[0024] The silicon photodiode 11, light diffuser 12, narrowband filter 13, and illuminance acquisition unit 22 are used to acquire illuminance parameters to the microprocessor 21. The silicon photodiode 11 is used to sense ambient light, the light diffuser 12 is used to ensure uniform distribution of optical fibers, the narrowband filter 13 is used to eliminate stray light interference, and the illuminance acquisition unit 22 is used to measure ambient light intensity and acquire the illuminance parameters acquired by the optical acquisition module 1 to the microprocessor 21.

[0025] The photodiode 14, frequency acquisition unit 23, and amplitude acquisition unit 24 are used to acquire frequency and amplitude parameters to the microprocessor 21. The frequency acquisition unit 23 is used to detect the flicker frequency of the light source, and the amplitude acquisition unit is used to measure the flicker depth. The microprocessor 21 is used to comprehensively analyze the illuminance, flicker, and amplitude parameters. The photodiode 14, frequency acquisition unit 23, and amplitude acquisition unit 24 can acquire the frequency and amplitude parameters acquired by the optical acquisition module 1 to the microprocessor 21.

[0026] The LCD display screen 41 includes an illuminance evaluation screen 411 and a flicker evaluation screen 412. The LCD display screen 41 uses a low-power LED screen to ensure visibility in sunlight. In addition to displaying various parameters, the illuminance evaluation screen 411 also displays emoticons for evaluation. The emoticons are divided into smiley face, neutral face and crying face.

[0027] For the comprehensive analysis of the three parameters, the microprocessor 21 displays the measured parameters and the corresponding emoji symbols through the illuminance evaluation screen 411 and the flicker evaluation screen 412. The evaluation system operates according to the following standards:

[0028] Illuminance value evaluation:

[0029] Smiley face: Illuminance 200-500 lux and flicker depth <5%

[0030] Flat face: Illumination 100-200 lux or 500-800 lux, or flicker depth 5-10%. Sad face: Illumination <100 lux or >800 lux, or flicker depth >10%.

[0031] Frequency evaluation:

[0032] Flicker frequency refers to the rate at which the brightness of a light source changes (unit: Hz). The human eye has significantly different sensitivities to different frequencies.

[0033] Safe range (smiley face):

[0034] ≥3125Hz (completely imperceptible, meets the requirements of IEEE Std 1789-2015 for high-risk exempt frequencies) or ≥120Hz (imperceptible to most people, meets the high-frequency dimming standard for ordinary LED drivers).

[0035] Scientific basis: The critical fusion frequency (CFF) of the human eye is usually 60-90Hz, and flicker perception is extremely weak when it exceeds 120Hz.

[0036] Acceptable range (flat face):

[0037] 80Hz~120Hz (some sensitive individuals may perceive it, but short-term exposure poses no significant health risk).

[0038] Basis: IEEE Std 1789 recommends strict control of modulation depth in low-frequency bands. Dangerous range (crying face):

[0039] <80Hz (visible flicker, which may cause headaches and eye strain).

[0040] Basis: The International Commission on Illumination (CIE) states that low-frequency flicker (<100Hz) is strongly correlated with visual discomfort. Flicker Percentage (or modulation depth) evaluation:

[0041] The flicker percentage reflects the fluctuation range of light output, and the calculation formula is:

[0042] Flicker percentage = I_max - I_min}{I_max + I_min}} times 100%

[0043] Excellent (smiley face):

[0044] <5% (fluctuations are almost imperceptible and meet the requirements for healthy lighting).

[0045] Basis: The EU Energy Star recommends a risk-free threshold of <5%. Tolerable (neutral):

[0046] 5%~10% (This may be uncomfortable for sensitive individuals, but is acceptable to most). Basis: IEEE Std 1789-2015 recommends limiting usage time.

[0047] Unqualified (crying face):

[0048] >10% (obvious flickering; long-term exposure may cause health problems).

[0049] Basis: A report from the U.S. Department of Energy (DOE) indicates that >10% flicker is significantly associated with visual fatigue.

[0050] Overall rating logic:

[0051] The equipment needs to be evaluated comprehensively based on both frequency and percentage, with the following priorities:

[0052] 1. Frequency priority: If the frequency is <80Hz, it is directly judged as a crying face (low frequency is more harmful).

[0053] 2. Percentage Supplement: If the frequency meets the standard but the percentage is >10%, it will still be judged as a crying face.

[0054] Example scenario:

[0055] 100Hz + 8% → Flat face (frequency is acceptable but percentage is slightly high)

[0056] 3000Hz + 3% → Smiley face (completely risk-free)

[0057] 50Hz + 15% → Sad face (Double risk)

[0058] Adjustable alternatives:

[0059] User-defined thresholds: To accommodate people with different levels of sensitivity, a function to manually adjust the evaluation criteria can be added.

[0060] Dynamic adaptive algorithm: Automatically adjusts the threshold according to ambient light (more stringent in dark environments).

[0061] Industry compliance mode: Built-in presets for standards such as IEEE and CIE for professional users to choose from.

[0062] Through the above-mentioned classification, the equipment can provide users with an intuitive and reliable evaluation of healthy lighting while ensuring scientific accuracy. The equipment offers a one-click measurement function, which can complete the measurement and display the results within 3 seconds, making it particularly suitable for rapid environmental assessment needs.

[0063] Working principle:

[0064] When the device is working, the silicon photodiode 11 receives the ambient light signal, which is then processed by the light diffuser 12 and the narrowband filter 13. The illuminance parameters are then collected by the illuminance acquisition unit 22 and input into the microprocessor 21. Meanwhile, the photodiode 14, the frequency acquisition unit 23, and the amplitude acquisition unit 24 can collect the frequency and amplitude parameters and input them into the microprocessor 21. The microprocessor 21 comprehensively analyzes the three sets of data: illuminance, frequency, and amplitude. Then, it calculates the comprehensive evaluation result by comparing it with the preset healthy lighting parameters. Finally, the numerical measurement result and the evaluation with emoticons are simultaneously displayed on the LCD screen 41.

Claims

1. A stroboscopic photometer with display evaluation, characterized by: It includes optical acquisition module (1), signal processing module (2), power module (3) and evaluation display module (4), the optical acquisition module (1) is composed of silicon photodiode (11), light diffusion sheet (12), narrowband filter (13) and photosensitive diode (14), the signal processing module (2) is composed of microprocessor (21), illumination acquisition unit (22), frequency acquisition unit (23) and amplitude acquisition unit (24), the evaluation display module (4) is composed of LCD display screen (41) and LED indicator light (42), the power module (3) is used to power use to optical acquisition module (1), signal processing module (2) and evaluation display module (4).

2. A stroboscope with display evaluation according to claim 1, characterized in that The silicon photodiode (11), light diffusion sheet (12), narrowband filter (13) and illumination acquisition unit (22) are used to collect illumination parameters to microprocessor (21).

3. A stroboscope with display evaluation according to claim 1, characterized in that The photosensitive diode (14), frequency acquisition unit (23) and amplitude acquisition unit (24) are used to collect frequency parameters and amplitude parameters to microprocessor (21).

4. A stroboscope with display evaluation according to claim 1, characterized in that The LCD display screen (41) includes illumination evaluation screen (411) and stroboscopic evaluation screen (412).

5. A stroboscope with display evaluation according to claim 1, characterized in that The power module (3) is rechargeable lithium battery.

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