The LED street lamp pavement test part is tested three times. The switch lights are normally turned on every day. The total lighting time is about 1200 hours, focusing on the actual lighting effect and environmental adaptability of the product. The resulting data is the average of three tests, with light decay calculated from the first and third results. (The decimal places in the data covered in this article are rounded off)
In Shenzhen, the first LED street light test LED street light has a total of 51 companies to sign up, and finally 27 models of 27 companies participated in the test. As a comparative object, the 140WCosmoPlis (Philips warm white system), Philips 150W high pressure sodium lamp, Philips 100W high pressure sodium lamp three models of Philips street lights.
main conclusion
Participated in the road test 27 ç› power is below 200W, the average actual input power is 126W;
The average power factor of the 27-inch LED street lamp on the road test is 0.9521, and the power factor is less than 0.9.
Pavement test 27 ç› LED street light in the 12m ??? 33m area average application efficiency 36Lm / W, in the 9m ??? 33m area, the average application of light efficiency 31Lm / W;
Pavement test 26ç› (1ç› no data) LED street light in the 12m ??? 33m area average light attenuation of 14.2%, the average light attenuation in the 9m ??? 33m area is 13.0%;
The average uniformity of the average illumination of the 27-inch LED street light in the 12m ??? 33m area is 0.31, and the average uniformity of the average illuminance in the area of ​​9m ??? 33m is 0.4;
If only the application of light efficiency, light decay, and total illumination uniformity are considered, there are five models of LED street lamps that perform better than the 140W CosmoPlis (Philips Warm White System), Philips 150W High Pressure Sodium Lamp, and Philips 100W High Pressure Sodium Lamp.
Analysis of test results of LED street light pavement
LED street light test pavement part involves 19 indicators, namely: voltage, current, power factor, input power, average brightness, average illuminance (12m (road lateral) ??? 33m (road longitudinal)), application of light (12m? ??33m), application of light effect (12m ??? 33m), light decay (12m ??? 33m), total illumination uniformity (12m ??? 33m), illuminance longitudinal uniformity (12m ??? 33m), Illuminance lateral uniformity (12m ??? 33m), average illuminance (9m ??? 33m), application of light (9m ??? 33m), application of light efficiency (9m ??? 33m), light decay (9m?? ?33m), total illumination uniformity (9m ??? 33m), illuminance longitudinal uniformity (9m ??? 33m), illuminance lateral uniformity (9m ??? 33m).
Partially comparable data (road test)
Voltage, current
The road test part LED street light and the Philips soft white system use 225V voltage, and the Philips 100W and 150W high pressure sodium lamps use 231V voltage. The overall voltage of the pavement test is slightly higher than the laboratory part 220V, and the voltage used by the high-pressure sodium lamp is slightly higher than that of the LED street lamp.
The average current of the 27-inch LED street light on the road test is 0.6A, the highest is 0.9A, and the lowest is 0.4A. The average current of 0.6A is less than 0.7A for the Philips 140W warm white system, 0.9A for the Philips 140W high pressure sodium lamp, and 0.7A for the Philips 100W high pressure sodium lamp. The LED street lamp current accounts for 52% between 0.5A and 0.6A, the current is between 0.6 and 0.7%, and 19% of the LED street lamp current exceeds 0.7A.
2. Input power
The average actual input power of the 27-inch LED street light test is 126W, with a maximum of 181W and a minimum of 93W. Among them, 22 of the 100-150W accounted for 81%, 4 of 150W or more accounted for 15%, and 1 of 100W accounted for 4%. The overall distribution was the same as that of the laboratory. The comparative Philips street light power is 154W, 195W, 125W, respectively. The actual power of the road section is higher than the laboratory part. The actual input power is 10%, 30%, and 25% higher than its nominal standard input power.
The power of the street lamp used for this test is below 200W, which is suitable for non-main road lighting.
The general power of LED street light refers to the input power. The power of high-pressure sodium lamp generally refers to the output power. Therefore, the actual input power of the two models of high-pressure sodium lamp in this test is more than 25% higher than its nominal standard power.
3. Power factor
The average power factor of the 27-inch LED streetlight test was 0.9521, with a maximum of 0.9964 and a minimum of 0.5733. The power factor is less than 0.9, only 1ç›, after deducting the lowest 1ç›, the remaining 26ç› average power factor is 0.9667. 27ç› LED street light has 1ç› power factor greater than 140WCosmoPlis 0.991. The power factor is better than the 0.921 of the Philips 150W high-pressure sodium lamp, which is 21ç›, and the power factor is better than the 0.6596 of the Philips 100W high-pressure sodium lamp.
Among the 27-inch LED street lamps, there are 19 power factors greater than 0.96, accounting for 70%. The power factor of 25-inch LED street lamps is greater than the local standard of LED street lamps in Guangdong Province, 0.92, accounting for 93%.
Compared with Philips high-pressure sodium lamps, LED street lamps have a relatively obvious advantage in terms of power factor.
4. Average brightness
The average brightness of the 27-inch LED street light on the road test is 1.204, the highest 1.759, and the lowest is 0.767. The average brightness is less than the 1.1841 of the Philips 150W high-pressure sodium lamp and 1.408 of the 140WCosmoPlis, which is higher than the 0.988 of the Philips 100W high-pressure sodium lamp. The average brightness of the 27-inch LED street lamp is greater than 140WCosmoPlis, which is 6%, 22%, and the average brightness is greater than the Philips 100W high-pressure sodium lamp. There are 17ç› with 63%.
Pavement test 27 ç› LED street light average brightness between 1.5-2cd/m2 accounted for 18%, average brightness between 1.25-1.5cd/m2 accounted for 30%, 37% of LED street lights average brightness less than 1cd/m2.
China's urban road lighting design standards stipulate that the average brightness of motor vehicle roads is between 0.5cd/m2 and 2cd/m2, and the average brightness of 27-inch LED street lights is within this range. If it is to be used in the main road according to the current regulations, the average brightness of the street lamps should reach 2 cd/m2. The street lamps tested this time did not meet the main road lighting requirements.
5. Application of optical communication
Part of the relevant form (road test)
1) Application of light-application area 12m (road horizontal) ??? 33m (road longitudinal):
In the 12m ??? 33m area, the average applied luminous flux of 27 ç› LED street lamps in the road test is 4448Lm, the maximum is 5908Lm, and the minimum is 2881Lm. The application of luminous flux LED street lights is not too concentrated. The maximum luminous flux of the LED street light is 5908Lm, which is less than the 6940Lm of 140WCosmoPlis and the 7084 of the Philips 150W high pressure sodium lamp. The average luminous flux of 4448 Lm is greater than the 3839 Lm of the Philips 100 W high pressure sodium lamp. A total of 22 LED street light applications have a luminous flux greater than the Philips 100W high pressure sodium lamp.
In the 12m ??? 33m area, 27 ç› LED street light application of light in the 4000Lm-5000Lm accounted for 44%, application of light in the 5000Lm-6000Lm accounted for 30%.
2) Application of light-application area 9m (road lateral) ??? 33m (road longitudinal):
In the 9m ??? 33m area, the average applied luminous flux of 27 ç› LED street lamps for road surface testing is 3889Lm, the maximum is 4851Lm, and the minimum is 2607Lm. The maximum luminous flux of LED street light is 4851Lm less than 5506Lm of 140WCosmoPlis and 5318 of Philips 150W high pressure sodium lamp. The average luminous flux of 3889Lm is greater than the 2945Lm of the Philips 100W high pressure sodium lamp. A total of 25 LED street light applications have a higher luminous flux than the Philips 100W high pressure sodium lamp.
In the area of ​​9m ??? 33m, 27 ç› LED street light application of light in the 4000Lm-5000Lm accounted for 37%, the application of light below the 4000Lm accounted for 63%.
6. Apply light effects
1) Application of light effect - application area 12m (road horizontal) ??? 33m (road longitudinal):
In the 12m ??? 33m area, the average applied light efficiency of the 27-inch LED street lamp is 36Lm/W, the highest is 50Lm/W, and the lowest is 25Lm/W. LED street light application efficiency is higher than 140WCosmoPlis45Lm/W, 6 inches higher than Philips 150W high pressure sodium lamp 36Lm/W. It is 18 inches higher than the Philips 100W high pressure sodium lamp 31Lm/W.
In the 12m ??? 33m area, 52% of the LED street light application efficiency is between 30-40Lm/W, and 30% of the LED street light application efficiency is between 40-50Lm/W.
In the 12m ??? 33m area, there are 6 LED LED road lighting effects better than 140WCosmoPlis. Human vision is more sensitive to LED street lights. Experts have suggested that the luminous efficacy of Led street lamps should be multiplied by 1.6 times, while sodium lamps are yellow, and the human eye is not sensitive. The sodium light effect should be multiplied by 0.64. If the LED street light is in line with the actual situation. The energy saving effect will be more prominent.
2) Application of light effect - application area 9m (road horizontal) ??? 33m (road vertical):
In the 9m ??? 33m area, the average applied light efficiency of the 27-inch LED street lamp is 31Lm/W, the highest is 42Lm/W, and the lowest is 22Lm/W. LED street light application efficiency is higher than 140WCosmoPlis35Lm/W, 8 inches higher than Philips 150W high pressure sodium lamp 28Lm/W, and 25ç› higher than Philips 100W high pressure sodium lamp 24Lm/W.
In the 9m ??? 33m area, 41% of the LED street light application efficiency is between 30-40Lm/W, and 11% of the LED street light application efficiency is between 40-50Lm/W.
In the 9m ??? 33m area, LED street light application has a relatively obvious advantage compared with Philips 150W, 100W high pressure sodium lamps.
7. Light decay
1) Light decay - application area 12m (road horizontal) ??? 33m (road vertical):
In the 12m ??? 33m area, the average light decay of the 26 ç› LED street light on the road test was 14.2%, the highest was 26.2%, and the lowest was 8.0%. The average light decay is lower than 16.1% of the Philips 100W high pressure sodium lamp. The LED road light decays less than 140WCosmoPlis9.1%, which is 1ç› lower than the Philips 150W high pressure sodium lamp 10.8%. There are 18ç› below 16.1% of Philips 100W high pressure sodium lamps.
In the 12m ??? 33m area, 46% of the LED road lights are between 10% and 15%, and 19% of the LED street lamps have a luminous efficacy of less than 10%.
In the 12m ??? 33m area, the LED road lighting performance has been better, but the overall performance is poor.
2) Light decay - application area 9m (road lateral) ??? 33m (road longitudinal):
In the 9m ??? 33m area, the average light decay of the 26 ç› LED street light on the road test was 13.0%, the highest 24.8%, and the lowest 5.9%. The average light decay is lower than 15.1% of the Philips 100W high pressure sodium lamp. The LED road light decays less than 140WCosmoPlis 8.7% and has 3 turns, which is lower than the Philips 150W high pressure sodium lamp 10.5%. There are 21ç› below 16.1% of Philips 100W high pressure sodium lamps.
In the 12m ??? 33m area, 58% of the LED road light fades between 10% and 15%, and 23% of the LED street light application efficiency is below 10%.
In the 9m ??? 33m area, the LED road light fading performance is better than that in the 12m ??? 33m area. Since the light fading has a greater impact on the LED street light than the high pressure sodium lamp, the LED road light fading needs to be greatly improved.
8. Average illuminance, total illuminance uniformity, illuminance longitudinal uniformity, illuminance lateral uniformity
Part of the relevant form (road test)
average illumination
The pavement test is tested in the application area of ​​12m ??? 33m ((road transverse ??? road longitudinal) and 9m ??? 33m), the content of the two areas is the same. According to the "urban road lighting design standards" Regulation: The average illumination of the expressway is 20LX, the average illumination of the main road is 15LX, the average illumination of the secondary trunk is 8LX, and the average illumination of the branch is 5LX. The existing cities have improved the standard. For example, the average illumination requirement of the main trunk road in Nanjing has been raised to 20-30LX.
1) Average illumination - application area 12m (road horizontal) ??? 33m (road vertical):
In the 12m ??? 33m area, the average illuminance of 27 ç› LED street lamps in the road test is 11.3LX, the highest is 14.9LX, and the lowest is 7.3LX. The average illumination of all 27-inch LED street lamps is less than 17.9LX for Philips 150W high-pressure sodium lamps and 17.5LX for 140WCosmoPlis. The average illumination of 21-inch LED street lamps is higher than that of Philips 100W high-pressure sodium lamps.
In the application area of ​​12m ??? 33m, the average illuminance of the 27 ç› LED street lamps did not reach the standard of the main road 15LX, and 93% of the LEDs reached the standard of the secondary trunk 8LX.
2) Average illumination - application area 9m (road landscape) ??? 33m (road longitudinal):
In the 9m ??? 33m area, the average illuminance of 27 ç› LED street lamps in the road test is 1.1LX, the highest is 16.3LX, and the lowest is 8.8LX. The average illumination of all 27-inch LED street lamps is less than 18.5LX for Philips 150W high-pressure sodium lamps and 17.9LX for 140WCosmoPlis. The average illumination of 25-inch LED street lamps is higher than that of Philips 100W high-pressure sodium lamps.
Total illumination uniformity
1) Total illuminance uniformity - application area 12m (road horizontal) ??? 33m (road vertical):
In the 12m ??? 33m area, the average uniformity of the average illumination of the 27-inch LED street lamp is 0.31, the highest is 0.61, and the lowest is 0.14. The total uniformity of the Philips street lamps as comparison is 0.38, 0.37, and 0.38, respectively, which are greater than the average of the total uniformity of the street illumination of the LEDs by 0.31.
In the 12m ??? 33m area, the total uniformity of illumination of 27 ç› LED street lamps is 0.4% for 0.4% and above, and the total uniformity of illumination 0.4 reaches the requirements for main and secondary road lighting. The 27-inch street lamp has a total uniformity of 48% illuminance below 0.3, and the overall uniformity of illumination is generally average.
2) Total illuminance - application area 9m (road horizontal) ??? 33m (road vertical):
In the area of ​​9m ??? 33m, the average uniformity of the average illumination of the 27-inch LED street lamp is 0.4, the highest is 0.67, and the lowest is 0.15. The average uniformity of illumination is greater than the total uniformity of the three types of Philips street lamps used as comparisons of 0.38, 0.36, and 0.37.
In the area of ​​9m ??? 33m, there are 13 ç› with 48% of the total illuminance uniformity of 0.4 and above, and 7% of the total illuminance with a uniformity of 0.3 or less. It can be seen that in the 9m ??? 33m area, the overall uniformity of illumination of the LED street lamp is better than that of the three models of the Philips warm white system and the high pressure sodium lamp.
Illuminance longitudinal uniformity
1) Illumination longitudinal uniformity - application area 12m (road lateral) ??? 33m (road longitudinal):
In the 12m ??? 33m area, the average illuminance of the 27 ç› LED street light in the road surface is 0.33, the highest is 0.57, and the lowest is 0.08. The average illuminance longitudinal uniformity of 0.33 is less than the comparative 140WCosmoPlis0.38, which is better than the Philips 150W high pressure sodium lamp 0.26 and the Philips 100W high pressure sodium lamp 0.28.
In the 12m ??? 33m area, the çºµå‘ illuminance of 27 ç› LED street lamps has a longitudinal uniformity of 0.4% or more and 10% accounted for 37%. The longitudinal uniformity of illumination is below 11 and 11% is 41%.
2) Illumination vertical uniformity - application area 9m (road horizontal) ??? 33m (road longitudinal):
In the area of ​​9m ??? 33m, the average illuminance of the 27 ç› LED street lamp in the road test has a longitudinal uniformity of 0.34, a maximum of 0.57 and a minimum of 0.08. The average illuminance longitudinal uniformity of 0.34 is less than the comparative 140WCosmoPlis0.38, which is better than the Philips 150W high pressure sodium lamp 0.26 and the Philips 100W high pressure sodium lamp 0.28.
In the area of ​​9m ??? 33m, the illuminance of 27 ç› LED street lamps with a longitudinal uniformity of 0.4 or above is 12% and 44%. The longitudinal uniformity of illumination is below 11 and 11% is 41%. The overall uniformity of illumination uniformity of the 27-inch LED street lamp in the 12m ??? 33m area and the 9m ??? 33m area is not large, and the longitudinal uniformity of more than half of the LED street lamps is equal in the two areas.
Illuminance lateral uniformity
1) Illumination lateral uniformity - application area 12m (road lateral) ??? 33m (road transverse):
In the 12m ??? 33m area, the average illuminance lateral uniformity of the 27 ç› LED street light on the road surface test is 0.21, the highest is 0.43, and the lowest is 0.07. The average illuminance lateral uniformity maximum of 0.43 is less than 0.45, 0.50, and 0.48 of the Philips street light as a comparison.
In the 12m ??? 33m area, the lateral uniformity of 27ç› LED street lamps with an average uniformity of 0.4 and above is 3ç›, accounting for 11%. The lateral uniformity of illuminance is below 20 and has 20% of 74%. In the 12m ??? 33m area, the overall performance of the 27 ç› LED street light in the lateral uniformity is relatively poor, and it needs to be greatly improved compared with the Philips warm white system and the high pressure sodium lamp street lamp.
2) Illuminance lateral uniformity - application area 9m (road horizontal) ??? 33m (road horizontal):
In the area of ​​9m ??? 33m, the average illuminance of the 27 ç› LED street lamp in the road test has a lateral uniformity of 0.38, a maximum of 0.62 and a minimum of 0.11. The average illuminance lateral uniformity of 0.38 is less than 0.45, 0.53, and 0.52 of the Philips street light as a comparison.
In the area of ​​9m ??? 33m, the lateral uniformity of the illuminance of 27 ç› LED street lamps is 5 有 and 55%. The lateral uniformity of illumination is below 11 and 11% is 41%. The lateral uniformity of 27ç…§LED streetlights in the 12m???33m area and 9m???33m area is very different overall, and the performance of the 9m???33m area is much better than the 12m?33m area.
9. Overall evaluation
If only considering the application of light efficiency, light decay, and total illumination uniformity, the overall performance of 27 models of LED street lamps is better than that of Philips warm white system and Philips 150W high pressure sodium lamps, belonging to Shenzhen Century Crystal Source, Shanghai Caihuang Division, Shenzhen Bangbei, Shenzhen Huiye Jinguang, Shenzhen Huaying. The overall performance of 27 models of LED street lamps is better than that of Philips 100W high-pressure sodium lamps, which account for 70%.
From this road test, it can be seen that the 27 models of the LED street lamps have performed better than the Philips warm white system and the 150W high pressure sodium lamp. Compared with the Philips 100W high pressure sodium lamp, the LED street lamp shows a good alternative in the pavement test.
The LED street light test results only reflect the performance of the participating test street lamps, and each company has only one type of LED street light to participate in the test. Therefore, the test results do not represent the actual LED street light level of each LED street lamp enterprise. However, from this test, we can better see the general technical level of China's LED street lamps in the first half of 2009.
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