Last modified by Xiaoling on 2025/04/27 16:45
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From version < 154.2 >
edited by Xiaoling
on 2022/06/15 09:00
To version < 150.36 >
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Title
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1 -LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
1 +LDDS75 - LoRaWAN Distance Detection Sensor User Manual
Content
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1 1  (% style="text-align:center" %)
2 -[[image:1655254599445-662.png]]
2 +[[image:1654846127817-788.png]]
3 3  
4 +**Contents:**
4 4  
6 +{{toc/}}
5 5  
6 6  
7 -**Table of Contents:**
8 8  
9 9  
10 10  
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11 11  
12 12  
13 13  
14 -
15 -
16 16  = 1.  Introduction =
17 17  
18 -== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
17 +== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
19 19  
20 20  (((
21 21  
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26 26  )))
27 27  
28 28  (((
28 +
29 +)))
30 +
31 +(((
29 29  It detects the distance** (% style="color:#4472c4" %) between the measured object and the sensor(%%)**, and uploads the value via wireless to LoRaWAN IoT Server.
30 30  )))
31 31  
32 32  (((
36 +
37 +)))
38 +
39 +(((
33 33  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.
34 34  )))
35 35  
36 36  (((
44 +
45 +)))
46 +
47 +(((
37 37  LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
38 38  )))
39 39  
40 40  (((
52 +
53 +)))
54 +
55 +(((
41 41  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.
42 42  )))
43 43  
44 44  (((
60 +
61 +)))
62 +
63 +(((
45 45  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
46 46  )))
47 47  )))
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68 68  * 4000mAh or 8500mAh Battery for long term use
69 69  
70 70  
90 +
91 +
71 71  == 1.3  Specification ==
72 72  
73 73  === 1.3.1  Rated environmental conditions ===
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74 74  
75 75  [[image:image-20220610154839-1.png]]
76 76  
77 -(((
78 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
98 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
79 79  
80 -**~ 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)**
81 -)))
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)**
82 82  
83 83  
84 84  
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92 92  
93 93  
94 94  
95 -(((
96 96  **(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.**
97 -)))
98 98  
99 99  
100 100  [[image:1654852175653-550.png]](% style="display:none" %) ** **
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113 113  * Sewer
114 114  * Bottom water level monitoring
115 115  
116 -
117 117  == 1.6  Pin mapping and power on ==
118 118  
119 119  
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150 150  )))
151 151  
152 152  (((
153 -
154 -
155 155  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
156 156  )))
157 157  
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162 162  [[image:image-20220607170145-1.jpeg]]
163 163  
164 164  
165 -(((
166 166  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
167 -)))
168 168  
169 -(((
170 170  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
171 -)))
172 172  
173 -(((
174 -
175 -
176 176  **Add APP EUI in the application**
177 -)))
178 178  
179 179  [[image:image-20220610161353-4.png]]
180 180  
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217 217  == 2.3  ​Uplink Payload ==
218 218  
219 219  (((
220 -(((
221 221  LDDS75 will uplink payload via LoRaWAN with below payload format: 
222 -)))
223 223  
224 -(((
225 225  Uplink payload includes in total 4 bytes.
226 226  Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
227 227  )))
228 -)))
229 229  
230 230  (((
231 231  
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260 260  
261 261  === 2.3.2  Distance ===
262 262  
263 -(((
264 264  Get the distance. Flat object range 280mm - 7500mm.
265 -)))
266 266  
267 -(((
268 268  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.**
269 -)))
270 270  
271 271  
272 272  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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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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852 852  == 2.8  ​Firmware Change Log ==
853 853  
854 854  
855 -(((
856 856  **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/]]
857 -)))
858 858  
859 -(((
860 -
861 -)))
862 862  
863 -(((
864 864  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
865 -)))
866 866  
867 867  
868 868  
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1006 1006  [[image:image-20220610172924-5.png]]
1007 1007  
1008 1008  
1009 -(((
1010 1010  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:
1011 -)))
1012 1012  
1013 1013  
1014 1014   [[image:image-20220610172924-6.png||height="601" width="860"]]
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1032 1032  (((
1033 1033  Format: Command Code (0x01) followed by 3 bytes time value.
1034 1034  
1035 -(((
1036 1036  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1037 -)))
1038 1038  
1039 1039  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1040 1040  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1041 1041  )))
1042 -)))
1043 1043  
1044 1044  
1025 +
1026 +)))
1045 1045  
1046 -
1047 -
1048 1048  == 3.3  Set Interrupt Mode ==
1049 1049  
1050 1050  Feature, Set Interrupt mode for GPIO_EXIT.
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1058 1058  
1059 1059  Format: Command Code (0x06) followed by 3 bytes.
1060 1060  
1061 -(((
1062 1062  This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.
1063 -)))
1064 1064  
1065 1065  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1066 1066  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1067 1067  
1068 1068  
1047 +
1069 1069  = 4.  FAQ =
1070 1070  
1071 1071  == 4.1  What is the frequency plan for LDDS75? ==
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1126 1126  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1127 1127  
1128 1128  
1108 +
1129 1129  = 7. ​ Packing Info =
1130 1130  
1131 1131  
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1141 1141  * Weight / pcs : g
1142 1142  
1143 1143  
1124 +
1144 1144  = 8.  ​Support =
1145 1145  
1146 1146  * 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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