Laser & Optoelectronics Progress, Volume. 56, Issue 11, 111502(2019)
Indoor Light Environment Simulation Based on Light Energy Transfer Method
Figures & Tables(11)
Fig. 2. Average illuminance error rate and running time versus number of reflection calculations
Fig. 3. Illuminance distribution results of work surface for each case. (a) Case 1, model simulation; (b) Case 2, model simulation; (3) Case 3, model simulation; (d) Case 4, model simulation; (e) Case 1, DIALux simulation; (f) Case 2, DIALux simulation (g) Case 3, DIALux simulation; (h) Case 4, DIALux simulation
Table 1. Cases of light environment model
View tableTable 1. Cases of light environment model
Number Space bottom shape Lighting arrangement Case 1 Conventional rectangular space Uniform arrangement Case 2 Unequal space on the ground Uniform arrangement Case 3 Conventional rectangular space Unequal heights Case 4 Round floor space Ring arrangement
Table 2. Comparison of average illuminance calculation results
View tableTable 2. Comparison of average illuminance calculation results
Case type Average direct illumination /lx Average reflected illuminance /lx Average illumination /lx Case 1 /lx 208 77 284 DIALux /lx 206 82 289 Error rate /% -0.76 -6.48 0.76 Case 2 /lx 208 77 285 DIALux /lx 206 82 288 Error rate /% 0.77 -5.74 -1.08 Case 3 /lx 220 83 303 DIALux /lx 216 80 296 Error rate /% 2.05 3.76 2.52 Case 4 /lx 202 92 293 DIALux /lx 205 90 295 Error rate /% -1.63 1.78 -0.60
Table 3. Comparison of illuminance uniformity calculation results
View tableTable 3. Comparison of illuminance uniformity calculation results
Case type Minimum illumination /lx Maximum illumination /lx Illumination uniformity Case 1 /lx 119 348 0.34 DIALux /lx 176 350 0.50 Error rate /% 33.9 0.6 32 Case 2 /lx 119 349 0.34 DIALux /lx 175 350 0.50 Error rate /% 34.1 0.3 32 Case 3 /lx 170 381 0.33 DIALux /lx 173 368 0.47 Error rate /% 26.6 3.5 29.8 Case 4 /lx 184 344 0.54 DIALux /lx 221 329 0.67 Error rate /% 16.7 -4.6 19.4
Table 4. Comparison of direct and reflected components of light energy
View tableTable 4. Comparison of direct and reflected components of light energy
Case type E dmaxE dminE fmaxE fminCase 1 /lx 274 101 95 18 DIALux /lx 274 100 103 75 Error rate /% 0 0.50 -7.38 -75.6 Case 2 /lx 274 101 92 18 DIALux /lx 274 100 101 75 Error rate /% 0 0.50 -8.81 -75.8 Case 3 /lx 297 103 103 19 DIALux /lx 295 98 103 71 Error rate /% 0.68 5.10 0.00 -73.2 Case 4 /lx 246 140 138 44 DIALux /lx 242 141 114 75 Error rate /% 1.65 -0.71 21.05 -41.3
Table 5. Simulated illuminance value and uniformity error after model improvement
View tableTable 5. Simulated illuminance value and uniformity error after model improvement
Case type E dvE fvE vE maxE minU Case 1 /lx 208 79 283 348 160 0.46 DIALux /lx 206 82 289 350 176 0.50 Error rate /% -0.76 -3.66 0.31 0.6 9.10 8.05 Case 2 /lx 208 78 286 349 167 0.48 DIALux /lx 206 82 288 350 175 0.50 Error rate /% 0.77 -4.89 -1.08 0.3 4.57 4.30 Case 3 /lx 220 82 302 381 169 0.44 DIALux /lx 216 80 296 368 173 0.47 Error rate /% 2.05 2.56 2.02 3.5 2.31 2.64 Case 4 /lx 202 92 291 344 219 0.64 DIALux /lx 205 90 295 329 221 0.67 Error rate /% -1.63 1.78 -1.36 -4.6 0.90 4.98
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Jundong Fu, Qing Chen, Yunxia Qiu, Cong Ye. Indoor Light Environment Simulation Based on Light Energy Transfer Method[J]. Laser & Optoelectronics Progress, 2019, 56(11): 111502
Paper Information
Category: Machine Vision
Received: Dec. 17, 2018
Accepted: Jan. 2, 2019
Published Online: Jun. 13, 2019
The Author Email: Jundong Fu (8755915@qq.com)
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