Last modified by Xiaoling on 2025/04/27 16:45
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From version < 151.2 >
edited by Xiaoling
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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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21 21  
22 22  (((
23 23  (((
24 -The Dragino LDDS75 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS75 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
25 +(((
26 +The Dragino LDDS20 is a (% style="color:#4472c4" %)**LoRaWAN Ultrasonic liquid level sensor**(%%) for Internet of Things solution. It uses (% style="color:#4472c4" %)**none-contact method **(%%)to measure the height of liquid in a container without opening the container, and send the value via LoRaWAN network to IoT Server
25 25  )))
26 26  
27 27  (((
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29 29  )))
30 30  
31 31  (((
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.
34 +The LDDS20 sensor is installed directly below the container to detect the height of the liquid level. User doesn’t need to open a hole on the container to be tested. The (% style="color:#4472c4" %)**none-contact measurement makes the measurement safety, easier and possible for some strict situation**. 
33 33  )))
34 34  
35 35  (((
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37 37  )))
38 38  
39 39  (((
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.
42 +LDDS20 uses ultrasonic sensing technology for distance measurement. LDDS20 is of high accuracy to measure various liquid such as: (% style="color:#4472c4" %)**toxic substances**(%%), (% style="color:#4472c4" %)**strong acids**(%%), (% style="color:#4472c4" %)**strong alkalis**(%%) and (% style="color:#4472c4" %)**various pure liquids**(%%) in high-temperature and high-pressure airtight containers.
41 41  )))
42 42  
43 43  (((
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45 45  )))
46 46  
47 47  (((
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*.
50 +The LoRa wireless technology used in LDDS20 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.
49 49  )))
50 50  
51 51  (((
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53 53  )))
54 54  
55 55  (((
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.
58 +LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
57 57  )))
58 58  
59 59  (((
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61 61  )))
62 62  
63 63  (((
66 +Each LDDS20 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.
67 +)))
68 +
69 +(((
70 +
71 +)))
72 +)))
73 +
74 +(((
75 +(((
64 64  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
65 65  )))
66 66  )))
67 67  )))
80 +)))
68 68  
69 69  
70 70  [[image:1654847051249-359.png]]
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86 86  * IP66 Waterproof Enclosure
87 87  * 4000mAh or 8500mAh Battery for long term use
88 88  
89 -
90 -
91 -
92 -
93 93  == 1.3  Specification ==
94 94  
95 95  === 1.3.1  Rated environmental conditions ===
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97 97  [[image:image-20220610154839-1.png]]
98 98  
99 99  (((
100 -**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)**
109 +**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
110 +
111 +**~ 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)**
101 101  )))
102 102  
103 103  
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169 169  )))
170 170  
171 171  (((
183 +
184 +
172 172  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
173 173  )))
174 174  
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188 188  )))
189 189  
190 190  (((
204 +
205 +
191 191  **Add APP EUI in the application**
192 192  )))
193 193  
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1052 1052  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1053 1053  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1054 1054  )))
1070 +)))
1055 1055  
1056 1056  
1057 -
1058 -)))
1059 1059  
1074 +
1075 +
1060 1060  == 3.3  Set Interrupt Mode ==
1061 1061  
1062 1062  Feature, Set Interrupt mode for GPIO_EXIT.
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1077 1077  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1078 1078  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1079 1079  
1080 -
1081 1081  = 4.  FAQ =
1082 1082  
1083 1083  == 4.1  What is the frequency plan for LDDS75? ==
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1137 1137  * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1138 1138  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1139 1139  
1140 -
1141 1141  = 7. ​ Packing Info =
1142 1142  
1143 1143  
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1152 1152  * Package Size / pcs : cm
1153 1153  * Weight / pcs : g
1154 1154  
1155 -
1156 1156  = 8.  ​Support =
1157 1157  
1158 1158  * 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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