Last modified by Xiaoling on 2025/04/27 16:45
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From version < 152.3 >
edited by Xiaoling
on 2022/06/14 17:18
To version < 150.36 >
edited by Xiaoling
on 2022/06/11 09:12
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Summary

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1 1  (% style="text-align:center" %)
2 2  [[image:1654846127817-788.png]]
3 3  
4 +**Contents:**
4 4  
5 -
6 -
7 -
8 -**Table of Contents:**
9 -
10 10  {{toc/}}
11 11  
12 12  
... ... @@ -29,22 +29,42 @@
29 29  )))
30 30  
31 31  (((
28 +
29 +)))
30 +
31 +(((
32 32  It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
33 33  )))
34 34  
35 35  (((
36 +
37 +)))
38 +
39 +(((
36 36  The LoRa wireless technology used in LDDS75 allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
37 37  )))
38 38  
39 39  (((
44 +
45 +)))
46 +
47 +(((
40 40  LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
41 41  )))
42 42  
43 43  (((
52 +
53 +)))
54 +
55 +(((
44 44  Each LDDS75 pre-loads with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect if there is network coverage, after power on.
45 45  )))
46 46  
47 47  (((
60 +
61 +)))
62 +
63 +(((
48 48  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
49 49  )))
50 50  )))
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72 72  
73 73  
74 74  
91 +
75 75  == 1.3  Specification ==
76 76  
77 77  === 1.3.1  Rated environmental conditions ===
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78 78  
79 79  [[image:image-20220610154839-1.png]]
80 80  
81 -(((
82 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
83 -)))
98 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
84 84  
100 +**b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
85 85  
86 86  
103 +
87 87  === 1.3.2  Effective measurement range Reference beam pattern ===
88 88  
89 89  **(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of 7.5cm.**
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94 94  
95 95  
96 96  
97 -(((
98 98  **(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
99 -)))
100 100  
101 101  
102 102  [[image:1654852175653-550.png]](% style="display:none" %) ** **
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115 115  * Sewer
116 116  * Bottom water level monitoring
117 117  
118 -
119 -
120 120  == 1.6  Pin mapping and power on ==
121 121  
122 122  
... ... @@ -163,17 +163,11 @@
163 163  [[image:image-20220607170145-1.jpeg]]
164 164  
165 165  
166 -(((
167 167  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
168 -)))
169 169  
170 -(((
171 171  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
172 -)))
173 173  
174 -(((
175 175  **Add APP EUI in the application**
176 -)))
177 177  
178 178  [[image:image-20220610161353-4.png]]
179 179  
... ... @@ -216,15 +216,11 @@
216 216  == 2.3  ​Uplink Payload ==
217 217  
218 218  (((
219 -(((
220 220  LDDS75 will uplink payload via LoRaWAN with below payload format: 
221 -)))
222 222  
223 -(((
224 224  Uplink payload includes in total 4 bytes.
225 225  Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
226 226  )))
227 -)))
228 228  
229 229  (((
230 230  
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259 259  
260 260  === 2.3.2  Distance ===
261 261  
262 -(((
263 263  Get the distance. Flat object range 280mm - 7500mm.
264 -)))
265 265  
266 -(((
267 267  For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
268 -)))
269 269  
270 270  
271 271  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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272 272  * If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
273 273  
274 274  
275 -
276 276  === 2.3.3  Interrupt Pin ===
277 277  
278 278  This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
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301 301  
302 302  === 2.3.5  Sensor Flag ===
303 303  
304 -(((
305 305  0x01: Detect Ultrasonic Sensor
306 -)))
307 307  
308 -(((
309 309  0x00: No Ultrasonic Sensor
310 -)))
311 311  
312 312  
313 313  
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320 320  
321 321  The payload decoder function for TTN V3 is here:
322 322  
323 -(((
324 324  LDDS75 TTN V3 Payload Decoder: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LDDS75/Payload_Decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Payload_Decoder/]]
325 -)))
326 326  
327 327  
328 328  
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849 849  * Blink once when device transmit a packet.
850 850  
851 851  
852 -
853 853  == 2.8  ​Firmware Change Log ==
854 854  
855 855  
856 -(((
857 857  **Firmware download link: **[[http:~~/~~/www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_End_Node/LSE01/Firmware/]]
858 -)))
859 859  
860 -(((
861 -
862 -)))
863 863  
864 -(((
865 865  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
866 -)))
867 867  
868 868  
869 869  
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1007 1007  [[image:image-20220610172924-5.png]]
1008 1008  
1009 1009  
1010 -(((
1011 1011  In the PC, you need to set the serial baud rate to (% style="color:green" %)**9600**(%%) to access the serial console for LDDS75. LDDS75 will output system info once power on as below:
1012 -)))
1013 1013  
1014 1014  
1015 1015   [[image:image-20220610172924-6.png||height="601" width="860"]]
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1033 1033  (((
1034 1034  Format: Command Code (0x01) followed by 3 bytes time value.
1035 1035  
1036 -(((
1037 1037  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1038 -)))
1039 1039  
1040 1040  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1041 1041  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1042 1042  )))
1043 -)))
1044 1044  
1045 1045  
1025 +
1026 +)))
1046 1046  
1047 -
1048 -
1049 1049  == 3.3  Set Interrupt Mode ==
1050 1050  
1051 1051  Feature, Set Interrupt mode for GPIO_EXIT.
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1059 1059  
1060 1060  Format: Command Code (0x06) followed by 3 bytes.
1061 1061  
1062 -(((
1063 1063  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1064 -)))
1065 1065  
1066 1066  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1067 1067  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger

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