Last modified by Xiaoling on 2025/04/27 16:45
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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 4  
5 5  
6 6  
7 -
8 8  **Table of Contents:**
9 9  
10 -{{toc/}}
11 11  
12 12  
13 13  
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15 15  
16 16  
17 17  
18 -
19 19  = 1.  Introduction =
20 20  
21 -== 1.1 ​ What is LoRaWAN Distance Detection Sensor ==
18 +== 1.1 ​ What is LoRaWAN Ultrasonic liquid level Sensor ==
22 22  
23 23  (((
24 24  
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25 25  
26 26  (((
27 27  (((
28 -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
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.
30 +
33 33  )))
34 34  
35 35  (((
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.
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**. 
37 37  )))
38 38  
39 39  (((
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*.
38 +
41 41  )))
42 42  
43 43  (((
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.
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.
45 45  )))
46 46  
47 47  (((
46 +
47 +)))
48 +
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.
51 +)))
52 +
53 +(((
54 +
55 +)))
56 +
57 +(((
58 +LDDS20 is powered by (% style="color:#4472c4" %)**8500mA Li-SOCI2 battery**(%%); It is designed for long term use up to 10 years*.
59 +)))
60 +
61 +(((
62 +
63 +)))
64 +
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 +(((
48 48  (% style="color:#4472c4" %) * (%%)Actually lifetime depends on network coverage and uplink interval and other factors.
49 49  )))
50 50  )))
51 51  )))
80 +)))
52 52  
53 53  
54 54  [[image:1654847051249-359.png]]
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70 70  * IP66 Waterproof Enclosure
71 71  * 4000mAh or 8500mAh Battery for long term use
72 72  
73 -
74 -
75 75  == 1.3  Specification ==
76 76  
77 77  === 1.3.1  Rated environmental conditions ===
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79 79  [[image:image-20220610154839-1.png]]
80 80  
81 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)**
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)**
83 83  )))
84 84  
85 85  
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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  
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153 153  )))
154 154  
155 155  (((
183 +
184 +
156 156  (% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LDDS75.
157 157  )))
158 158  
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172 172  )))
173 173  
174 174  (((
204 +
205 +
175 175  **Add APP EUI in the application**
176 176  )))
177 177  
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271 271  * If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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 -
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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848 848  * Solid ON for 5 seconds once device successful Join the network.
849 849  * Blink once when device transmit a packet.
850 850  
851 -
852 -
853 853  == 2.8  ​Firmware Change Log ==
854 854  
855 855  
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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
1068 1068  
1069 -
1070 -
1071 1071  = 4.  FAQ =
1072 1072  
1073 1073  == 4.1  What is the frequency plan for LDDS75? ==
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1127 1127  * (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1128 1128  * (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1129 1129  
1130 -
1131 -
1132 1132  = 7. ​ Packing Info =
1133 1133  
1134 1134  
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1143 1143  * Package Size / pcs : cm
1144 1144  * Weight / pcs : g
1145 1145  
1146 -
1147 -
1148 1148  = 8.  ​Support =
1149 1149  
1150 1150  * 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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