Changes for page LDDS45 - LoRaWAN Distance Detection Sensor User Manual
Last modified by Mengting Qiu on 2025/02/26 15:04
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... ... @@ -918,7 +918,7 @@ 918 918 919 919 The LiDAR probe is based on TOF, namely, Time of Flight principle. To be specific, the product emits modulation wave of near infrared ray on a periodic basis, which will be reflected after contacting object. The product obtains the time of flight by measuring round-trip phase difference and then calculates relative range between the product and the detection object, as shown below. 920 920 921 -[[image: 1654831757579-263.png]]921 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image001.png]] 922 922 923 923 924 924 ... ... @@ -926,7 +926,7 @@ 926 926 927 927 With optimization of light path and algorithm, The LiDAR probe has minimized influence from external environment on distance measurement performance. Despite that, the range of distance measurement may still be affected by the environment illumination intensity and the reflectivity of detection object. As shown in below: 928 928 929 -[[image: 1654831774373-275.png]]929 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image002.png]] 930 930 931 931 932 932 ①Represents the detection blind zone of The LiDAR probe, 0-10cm, within which the output data is unreliable. ... ... @@ -939,12 +939,12 @@ 939 939 Vertical Coordinates: Represents the radius of light spot for The LiDAR probe at the different distances. The diameter of light spot depends on the FOV of The LiDAR probe (the term of FOV generally refers to the smaller value between the receiving angle and the transmitting angle), which is calculated as follows: 940 940 941 941 942 -[[image: 1654831797521-720.png]]942 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image003.png]] 943 943 944 944 945 945 In the formula above, d is the diameter of light spot; D is detecting range; β is the value of the receiving angle of The LiDAR probe, 3.6°. Correspondence between the diameter of light spot and detecting range is given in Table below. 946 946 947 -[[image: 1654831810009-716.png]]947 +[[image:file:///C:/Users/93456/AppData/Local/Temp/msohtmlclip1/01/clip_image004.png]] 948 948 949 949 950 950 If the light spot reaches two objects with different distances, as shown in Figure 3, the output distance value will be a value between the actual distance values of the two objects. For a high accuracy requirement in practice, the above situation should be noticed to avoid the measurement error. ... ... @@ -1077,6 +1077,7 @@ 1077 1077 ))) 1078 1078 1079 1079 1080 + 1080 1080 == 4.3 Get Firmware Version Info == 1081 1081 1082 1082 Feature: use downlink to get firmware version. ... ... @@ -1088,6 +1088,7 @@ 1088 1088 * Reply to the confirmation package: 26 01 1089 1089 * Reply to non-confirmed packet: 26 00 1090 1090 1092 + 1091 1091 Device will send an uplink after got this downlink command. With below payload: 1092 1092 1093 1093 Configures info payload: ... ... @@ -1340,6 +1340,7 @@ 1340 1340 * (% style="color:red" %)**IN865**(%%): LoRaWAN IN865 band 1341 1341 * (% style="color:red" %)**CN470**(%%): LoRaWAN CN470 band 1342 1342 1345 + 1343 1343 = 10. Packing Info = 1344 1344 1345 1345 ... ... @@ -1354,6 +1354,7 @@ 1354 1354 * Package Size / pcs : cm 1355 1355 * Weight / pcs : g 1356 1356 1360 + 1357 1357 = 11. Support = 1358 1358 1359 1359 * Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.
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