Method for evaluating carbon reduction level of electronic video products

Abstract

The application discloses a kind of electronic video product carbon reduction level evaluation methods, it is related to carbon emission technical field, including: the typical power consumption benchmark of electronic video product is calculated;Test power consumption under different image mode or working mode of electronic video product, calculate the typical power consumption initial value of electronic video product;Power consumption compensation is carried out to advanced display technology, effective energy-saving technology, and the final value of typical power consumption of electronic video product is calculated;Calculate the carbon reduction amount of electronic video product in unit time operation;The application provides technical support for electronic video product green certification, carbon emission evaluation, also provides reference for other electronic video products in related field.

Description

Technical Field

[0001] This invention relates to the field of carbon emission technology, and in particular to a method for assessing the carbon reduction level of electronic video products. Background Technology

[0002] Reducing energy consumption and carbon emissions in products is a crucial direction for achieving green development. A suitable method for assessing carbon reduction levels not only facilitates comparisons among consumers but also helps the government formulate policy guidance and promotes the orderly, healthy, and sustainable development of industries.

[0003] The existing methods for assessing the carbon reduction level of electronic video products, namely the group standards T / CSTE 0038—2022 and T / CECA-G 0165—2022 "Technical Requirements for Assessment of Carbon Reduction of High-Efficiency Energy-Saving Products (Electronic Video Products)," are the first published standards in the industry. They mainly draw on the estimation methods of household appliances such as air conditioners, using the product's energy efficiency and the national energy efficiency limit for estimation. The following shortcomings exist: (1) The energy efficiency of electronic video products is essentially their luminous efficiency, while the main purpose of electronic video products is display. Energy-saving and carbon-reduction technologies and evaluation methods that are detached from display performance are not suitable; (2) Some advanced display technologies can greatly improve display performance, but reduce product energy efficiency. For example, the energy efficiency level of OLED TVs is generally lower than that of LCD TVs. Directly using energy efficiency to evaluate the carbon reduction of products is not conducive to the promotion of these advanced display technologies; (3) Some technical measures that are conducive to energy saving and emission reduction are not considered, such as ambient light control function; (4) There are significant differences between the energy efficiency test of electronic video products and the settings, signal ports used by users. Using only energy efficiency to evaluate the carbon reduction of products is difficult to reflect the real situation.

[0004] To address the aforementioned issues, there is an urgent need for an assessment method that maintains good continuity with national mandatory energy efficiency standards, takes into account the promotion of advanced display technologies, fully integrates user habits and actual product energy consumption, and provides credible evaluation results. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this invention is to provide a method for assessing the carbon reduction level of electronic video products during actual use, based on a comprehensive evaluation of carbon reduction per unit time. This method provides technical support for green certification and carbon emission assessment of electronic video products, and also serves as a reference for other electronic video products in related fields.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a method for assessing the carbon reduction level of electronic video products, comprising the following steps:

[0007] Step 1: Calculate the typical power consumption reference P of the electronic video product. b ;

[0008] Step 2: Test the power consumption of the electronic video product under different image modes or working modes, and calculate the initial value P of the typical power consumption of the electronic video product. t0 ;

[0009] Step 3: Compensate for the power consumption of advanced display technologies and effective energy-saving technologies, and calculate the typical final power consumption P of electronic video products. ts ;

[0010] Step 4: Calculate the carbon reduction (ER) of electronic video products operating per unit time.

[0011] As a further improvement to the present invention, the following steps are also included:

[0012] Step 5: Calculate the carbon reduction rate (ERR) of electronic video products operating per unit time.

[0013] As a further improvement of the present invention, in step 1, the typical power consumption reference P b The specific calculation method is as follows:

[0014]

[0015] Where, L b The nominal / typical brightness or illuminance of the electronic video product is represented by S, where S is the effective display area of ​​the electronic video product, and Eff is the illuminance. b As an energy efficiency benchmark, P s This refers to the signal processing power of electronic video products.

[0016] As a further improvement of the present invention, in step 2, the initial value of the typical power consumption P t0 The specific calculation method is as follows:

[0017] P t0 =∑(P i ×X i )

[0018] Where, P i X represents the power consumption measured in image mode i or operating mode i. i , which is the weight factor for image mode i or working mode i.

[0019] As a further improvement of the present invention, the value of the weighting factor is determined according to the frequency of use of different image modes or working modes.

[0020] As a further improvement of the present invention, in step 3, the typical power consumption final value P ts The specific calculation method is as follows:

[0021]

[0022] Where, ρ i Here, is the i-th power consumption correction coefficient, n is the number of power consumption correction coefficients, and corr is the typical power consumption compensation value.

[0023] As a further improvement of the present invention, in step 3, the advanced display technology includes OLED and / or HDR, and the effective energy-saving technology includes ambient light control technology / automatic brightness adjustment technology.

[0024] As a further improvement of the present invention, in step 4, the method for calculating the carbon reduction ER of the electronic video product operating per unit time is as follows:

[0025] ER=[(P b -P ts )]×EF

[0026] Wherein, EF is the grid emission factor.

[0027] As a further improvement of the present invention, in step 5, the method for calculating the carbon reduction rate (ERR) of the electronic video product operating per unit time is as follows:

[0028]

[0029] As a further improvement of the present invention, the electronic video product is a television set, a monitor, or a projector.

[0030] The beneficial effects of this invention are:

[0031] This invention aims to recreate the real-world usage scenarios of electronic video products, using the national mandatory energy efficiency standard calculation formula to deduce the power consumption benchmark, calculating typical power consumption using power consumption under different image or working modes, and compensating for power consumption of some advanced display technologies and effective energy-saving measures. Finally, the difference between the benchmark power consumption value and the final typical power consumption value is used to calculate the carbon reduction of flat-panel TV electronic video products per unit time, and the carbon reduction rate can also be calculated for evaluating the carbon reduction level of electronic video products. Attached Figure Description

[0032] Figure 1 This is a flowchart of an embodiment of the present invention. Detailed Implementation

[0033] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0034] Example

[0035] like Figure 1 As shown, a method for assessing the carbon reduction level of electronic video products includes the following steps:

[0036] Step 1: Calculate the typical power consumption benchmark based on the size and nominal / typical brightness of the electronic video product.

[0037] The power consumption can be calculated by using the energy efficiency calculation formula for electronic video products. The calculation formula is as follows:

[0038]

[0039] P b — Typical power consumption benchmark, in watts (W);

[0040] L b —The nominal / typical luminance or illuminance of electronic video products, in cd / m² or lx;

[0041] S – Effective display area of ​​electronic video products, in square meters;

[0042] Eff b —Energy efficiency standards (energy efficiency limits) for electronic video products, in cd / W; P s —Signal processing power of electronic video products, measured in watts (W). When there are no relevant regulations in the product's energy efficiency standards, take 0.

[0043] Referring to the lower limit of brightness requirements in section 5.5.1 of "SJ / T11343-2015 General Specification for Digital Television LCD Displays", the following are examples of typical power consumption benchmark calculation results for several common flat-panel TVs:

[0044]

[0045]

[0046] Step 2: Test the power consumption in different image modes or working modes of the electronic video product, and calculate the initial value of typical power consumption;

[0047] Power consumption should be measured separately for each image mode or operating mode of the electronic video product. Parameter settings should preferably use the system default settings, and the signal input port should be HDMI or the user's preferred port. Test signals should preferably use dynamic test sequences that reflect user usage characteristics, such as the 10-minute dynamic test sequence specified in IEC 62087. Other test signals specified in the product's energy efficiency standards may also be used. If energy-saving functions such as ambient light control are present, they should be turned off. If they cannot be turned off, measures should be taken to minimize their impact. The impact of these energy-saving functions on carbon emissions should be corrected using a correction factor; if the impact cannot be minimized, no correction factor should be used.

[0048] The power consumption of each image mode or operating mode in electronic video products has a different weight, with the default image mode or operating mode accounting for the absolute proportion. The calculation formula is as follows:

[0049] P t0 =∑(P i ×X i )

[0050] P t0 —Typical initial power consumption, in W;

[0051] P i —Power consumption measured in image mode i or operating mode i, in W;

[0052] X i —The weighting factor of image mode i or working mode i. The value of the weighting factor is mainly determined by the frequency of use by the user.

[0053] Taking flat-screen TVs as an example, the recommended power consumption weighting for different image modes or operating modes is as follows:

[0054]

[0055]

[0056] Step 3: Compensate for the power consumption of advanced display technologies and effective energy-saving technologies, and calculate the final value of typical power consumption;

[0057] The main considerations include, but are not limited to, technologies that significantly improve display performance and energy efficiency, such as OLED, HDR, and ambient light control. The final value of typical power consumption is calculated by adjusting or compensating for coefficients, as shown in the following formula:

[0058] P ts =P t0 ×ρ-corr

[0059] P ts —Typical final power consumption, in watts (W);

[0060] ρ—Power consumption correction factor. This is used when the product has energy-saving technologies such as ambient light control, or uses advanced display technologies such as OLED. When multiple correction factors exist, the product of all factors is used.

[0061] corr—Typical power consumption compensation value, in watts (W). Used when there are additional functions that cannot be turned off during testing, and can also be used for compensation of advanced display technologies and effective energy-saving methods suitable for this approach.

[0062] Taking flat-screen TVs as an example, the table below lists some practical values ​​for power consumption correction factors:

[0063]

[0064]

[0065] Step 4: Calculate the carbon reduction of the electronic video product per unit time (1 hour). The calculation formula is as follows:

[0066] ER=[(P b -P ts )]×EF

[0067] ER – To assess the carbon reduction of electronic video products, measured in grams of carbon dioxide per hour (gCO2 / h);

[0068] P b — Typical power consumption benchmark, in watts (W);

[0069] P ts —Typical final power consumption, in watts (W);

[0070] EF—Emission factor of the power grid, in gCO2 / Wh, with a value of 0.581 (Source: Notice from the General Office of the Ministry of Ecology and Environment on Key Tasks Related to the Management of Enterprise Greenhouse Gas Emission Reports in 2022, Huanban Climate Letter (2022) No. 111).

[0071] Step 5: The formula for calculating the carbon reduction rate of electronic video products per unit time is as follows:

[0072]

[0073] ERR – To assess the carbon reduction rate of electronic visual products.

[0074] The embodiments described above are merely illustrative of specific implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A method for assessing the carbon reduction level of electronic video products, characterized in that, Includes the following steps: Step 1: Calculate the typical power consumption benchmark for electronic video products. ; In step 1, the typical power consumption reference The specific calculation method is as follows: ； in, The nominal / typical brightness or illuminance of electronic video products. The effective display area of ​​electronic video products, As an energy efficiency benchmark, The signal processing power for electronic video products; Step 2: Test the power consumption of the electronic video product under different image modes or working modes, and calculate the initial value of the typical power consumption of the electronic video product. ; In step 2, the initial value of the typical power consumption The specific calculation method is as follows: ； in, In image mode or work mode The power consumption measured below, For image mode or work mode Weighting factors; Step 3: Compensate for the power consumption of advanced display technologies and effective energy-saving technologies, and calculate the final value of typical power consumption of electronic video products. ; In step 3, the final value of the typical power consumption The specific calculation method is as follows: ； in, For the first Power consumption correction factor, The number of power consumption correction factors. This represents the typical power consumption compensation value. Step 4: Calculate the carbon reduction of electronic video products per unit time. ; In step 4, the carbon reduction amount of the electronic video product per unit time is calculated. The specific calculation method is as follows: ； in, This refers to the power grid emission factor.

2. The method for assessing the carbon reduction level of electronic video products according to claim 1, characterized in that, It also includes the following steps: Step 5: Calculate the carbon reduction rate of electronic video products operating per unit time. .

3. The method for assessing the carbon reduction level of electronic video products according to claim 1, characterized in that, The value of the weighting factor is determined based on the frequency of use of different image modes or working modes.

4. The method for assessing the carbon reduction level of electronic video products according to claim 1, characterized in that, In step 3, the advanced display technology includes OLED and / or HDR, and the effective energy-saving technology includes ambient light control technology / automatic brightness adjustment technology.

5. The method for assessing the carbon reduction level of electronic video products according to claim 1, characterized in that, In step 5, the carbon reduction rate of the electronic video product per unit time is... The specific calculation method is as follows: 。 6. The method for assessing the carbon reduction level of electronic video products according to claim 5, characterized in that, The electronic video product is a television set, monitor, or projector.

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