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Last modified by Xiaoling on 2025/04/27 16:45
From version 150.36
edited by Xiaoling
on 2022/06/11 09:12
Change comment: There is no comment for this version
To version 154.2
edited by Xiaoling
on 2022/06/15 09:00
Change comment: There is no comment for this version

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Title
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1 -LDDS75 - LoRaWAN Distance Detection Sensor User Manual
1 +LDDS20 - LoRaWAN Ultrasonic Liquid Level Sensor User Manual
Content
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1 1  (% style="text-align:center" %)
2 -[[image:1654846127817-788.png]]
2 +[[image:1655254599445-662.png]]
3 3  
4 -**Contents:**
5 5  
6 -{{toc/}}
7 7  
8 8  
7 +**Table of Contents:**
9 9  
10 10  
11 11  
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12 12  
13 13  
14 14  
14 +
15 +
15 15  = 1.  Introduction =
16 16  
17 -== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
18 +== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
18 18  
19 19  (((
20 20  
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25 25  )))
26 26  
27 27  (((
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 -(((
40 40  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.
41 41  )))
42 42  
43 43  (((
44 -
45 -)))
46 -
47 -(((
48 48  LDDS75 is powered by (% style="color:#4472c4" %)** 4000mA or 8500mAh Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
49 49  )))
50 50  
51 51  (((
52 -
53 -)))
54 -
55 -(((
56 56  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.
57 57  )))
58 58  
59 59  (((
60 -
61 -)))
62 -
63 -(((
64 64  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
65 65  )))
66 66  )))
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87 87  * 4000mAh or 8500mAh Battery for long term use
88 88  
89 89  
90 -
91 -
92 92  == 1.3  Specification ==
93 93  
94 94  === 1.3.1  Rated environmental conditions ===
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95 95  
96 96  [[image:image-20220610154839-1.png]]
97 97  
98 -**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);**
77 +(((
78 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
99 99  
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)**
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 +)))
101 101  
102 102  
103 103  
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111 111  
112 112  
113 113  
95 +(((
114 114  **(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 +)))
115 115  
116 116  
117 117  [[image:1654852175653-550.png]](% style="display:none" %) ** **
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130 130  * Sewer
131 131  * Bottom water level monitoring
132 132  
116 +
133 133  == 1.6  Pin mapping and power on ==
134 134  
135 135  
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166 166  )))
167 167  
168 168  (((
153 +
154 +
169 169  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
170 170  )))
171 171  
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176 176  [[image:image-20220607170145-1.jpeg]]
177 177  
178 178  
165 +(((
179 179  For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
167 +)))
180 180  
169 +(((
181 181  Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
171 +)))
182 182  
173 +(((
174 +
175 +
183 183  **Add APP EUI in the application**
177 +)))
184 184  
185 185  [[image:image-20220610161353-4.png]]
186 186  
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223 223  == 2.3  ​Uplink Payload ==
224 224  
225 225  (((
220 +(((
226 226  LDDS75 will uplink payload via LoRaWAN with below payload format: 
222 +)))
227 227  
224 +(((
228 228  Uplink payload includes in total 4 bytes.
229 229  Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
230 230  )))
228 +)))
231 231  
232 232  (((
233 233  
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262 262  
263 263  === 2.3.2  Distance ===
264 264  
263 +(((
265 265  Get the distance. Flat object range 280mm - 7500mm.
265 +)))
266 266  
267 +(((
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.**
269 +)))
268 268  
269 269  
270 270  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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299 299  
300 300  === 2.3.5  Sensor Flag ===
301 301  
304 +(((
302 302  0x01: Detect Ultrasonic Sensor
306 +)))
303 303  
308 +(((
304 304  0x00: No Ultrasonic Sensor
310 +)))
305 305  
306 306  
307 307  
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314 314  
315 315  The payload decoder function for TTN V3 is here:
316 316  
323 +(((
317 317  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 +)))
318 318  
319 319  
320 320  
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844 844  == 2.8  ​Firmware Change Log ==
845 845  
846 846  
855 +(((
847 847  **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 +)))
848 848  
859 +(((
860 +
861 +)))
849 849  
863 +(((
850 850  **Firmware Upgrade Method: **[[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
865 +)))
851 851  
852 852  
853 853  
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991 991  [[image:image-20220610172924-5.png]]
992 992  
993 993  
1009 +(((
994 994  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 +)))
995 995  
996 996  
997 997   [[image:image-20220610172924-6.png||height="601" width="860"]]
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1015 1015  (((
1016 1016  Format: Command Code (0x01) followed by 3 bytes time value.
1017 1017  
1035 +(((
1018 1018  If the downlink payload=0100003C, it means set the END Node’s Transmit Interval to 0x00003C=60(S), while type code is 01.
1037 +)))
1019 1019  
1020 1020  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1021 1021  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1022 1022  )))
1042 +)))
1023 1023  
1024 1024  
1025 -
1026 -)))
1027 1027  
1046 +
1047 +
1028 1028  == 3.3  Set Interrupt Mode ==
1029 1029  
1030 1030  Feature, Set Interrupt mode for GPIO_EXIT.
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1038 1038  
1039 1039  Format: Command Code (0x06) followed by 3 bytes.
1040 1040  
1061 +(((
1041 1041  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 +)))
1042 1042  
1043 1043  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1044 1044  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1045 1045  
1046 1046  
1047 -
1048 1048  = 4.  FAQ =
1049 1049  
1050 1050  == 4.1  What is the frequency plan for LDDS75? ==
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1105 1105  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1106 1106  
1107 1107  
1108 -
1109 1109  = 7. ​ Packing Info =
1110 1110  
1111 1111  
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1121 1121  * Weight / pcs : g
1122 1122  
1123 1123  
1124 -
1125 1125  = 8.  ​Support =
1126 1126  
1127 1127  * 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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1 +XWiki.Xiaoling
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