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Last modified by Xiaoling on 2025/04/27 16:45
From version 154.3
edited by Xiaoling
on 2022/06/15 09:04
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To version 151.13
edited by Xiaoling
on 2022/06/11 09:39
Change comment: There is no comment for this version

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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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22 22  
23 23  (((
24 24  (((
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
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.
27 27  )))
28 28  
29 29  (((
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31 31  )))
32 32  
33 33  (((
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**. 
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.
35 35  )))
36 36  
37 37  (((
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39 39  )))
40 40  
41 41  (((
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.
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.
43 43  )))
44 44  
45 45  (((
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47 47  )))
48 48  
49 49  (((
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.
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*.
51 51  )))
52 52  
53 53  (((
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55 55  )))
56 56  
57 57  (((
58 -LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
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.
59 59  )))
60 60  
61 61  (((
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63 63  )))
64 64  
65 65  (((
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 -(((
76 76  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
77 77  )))
78 78  )))
79 79  )))
80 -)))
81 81  
82 82  
83 83  [[image:1654847051249-359.png]]
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99 99  * IP66 Waterproof Enclosure
100 100  * 4000mAh or 8500mAh Battery for long term use
101 101  
89 +
90 +
91 +
92 +
102 102  == 1.3  Specification ==
103 103  
104 104  === 1.3.1  Rated environmental conditions ===
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106 106  [[image:image-20220610154839-1.png]]
107 107  
108 108  (((
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)**
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)**
112 112  )))
113 113  
114 114  
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144 144  * Sewer
145 145  * Bottom water level monitoring
146 146  
136 +
137 +
138 +
139 +
147 147  == 1.6  Pin mapping and power on ==
148 148  
149 149  
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180 180  )))
181 181  
182 182  (((
183 -
184 -
185 185  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
186 186  )))
187 187  
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201 201  )))
202 202  
203 203  (((
204 -
205 -
206 206  **Add APP EUI in the application**
207 207  )))
208 208  
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302 302  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
303 303  * 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.
304 304  
294 +
295 +
296 +
297 +
305 305  === 2.3.3  Interrupt Pin ===
306 306  
307 307  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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877 877  * Solid ON for 5 seconds once device successful Join the network.
878 878  * Blink once when device transmit a packet.
879 879  
873 +
874 +
875 +
876 +
880 880  == 2.8  ​Firmware Change Log ==
881 881  
882 882  
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1067 1067  * Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
1068 1068  * Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
1069 1069  )))
1067 +
1070 1070  )))
1071 1071  
1072 1072  
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1093 1093  * Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1094 1094  * Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1095 1095  
1094 +
1095 +
1096 +
1097 +
1096 1096  = 4.  FAQ =
1097 1097  
1098 1098  == 4.1  What is the frequency plan for LDDS75? ==
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1152 1152  * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1153 1153  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1154 1154  
1157 +
1158 +
1159 +
1160 +
1155 1155  = 7. ​ Packing Info =
1156 1156  
1157 1157  
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1166 1166  * Package Size / pcs : cm
1167 1167  * Weight / pcs : g
1168 1168  
1175 +
1169 1169  = 8.  ​Support =
1170 1170  
1171 1171  * 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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Author
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1 -XWiki.Xiaoling
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