DirekTronik LDDS45 Manuale utente

LDDS45 - LoRaWAN Distance Detection Sensor

User Manual

last modiﬁed by Xiaoling

on 2022/10/27 17:11

User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual

Table of Contents

1. Introduction ........................................................................................................................................................................ 4

1.1 What is LoRaWAN Distance Detection Sensor ........................................................................................................ 4

1.2 Features ........................................................................................................................................................................ 5

1.3 Speciﬁcation .................................................................................................................................................................. 5

1.3.1 Rated environmental conditions ........................................................................................................................... 5

1.3.2 Eﬀective measurement range Reference beam pattern .................................................................................... 6

1.5 Applications ................................................................................................................................................................... 7

1.6 Pin mapping and power on ........................................................................................................................................ 7

2. Conﬁgure LDDS45 to connect to LoRaWAN network .................................................................................................. 7

2.1 How it works ................................................................................................................................................................. 7

2.2 Quick guide to connect to LoRaWAN server (OTAA) ............................................................................................. 7

2.3 Uplink Payload ............................................................................................................................................................ 13

2.3.1 Battery Info ........................................................................................................................................................... 13

2.3.2 Distance ................................................................................................................................................................. 13

2.3.3 Interrupt Pin .......................................................................................................................................................... 13

2.3.4 DS18B20 Temperature sensor .......................................................................................................................... 14

2.3.5 Sensor Flag .......................................................................................................................................................... 14

2.3.6 Decode payload in The Things Network ........................................................................................................... 14

2.4 Uplink Interval ............................................................................................................................................................ 14

2.5 Show Data in DataCake IoT Server ........................................................................................................................ 15

2.6 Frequency Plans ........................................................................................................................................................ 17

2.6.1 EU863-870 (EU868) ............................................................................................................................................ 17

2.6.2 US902-928(US915) ............................................................................................................................................. 18

2.6.3 CN470-510 (CN470) ........................................................................................................................................... 18

2.6.4 AU915-928(AU915) ............................................................................................................................................. 19

2.6.5 AS920-923 & AS923-925 (AS923) ................................................................................................................... 20

2.6.6 KR920-923 (KR920) ............................................................................................................................................ 20

2.6.7 IN865-867 (IN865) ............................................................................................................................................... 21

2.7 LED Indicator .............................................................................................................................................................. 21

2.8 Firmware Change Log ............................................................................................................................................... 21

2.9 Mechanical .................................................................................................................................................................. 22

3. Battery & How to replace ................................................................................................................................................ 22

3.1 Battery Type ................................................................................................................................................................ 22

3.2 Replace Battery ........................................................................................................................................................... 23

3.3 Power Consumption Analyze ..................................................................................................................................... 23

3.3.1 Battery Note ........................................................................................................................................................... 24

3.3.2 Replace the battery ............................................................................................................................................... 24

4. Conﬁgure LDDS45 via AT Command or LoRaWAN Downlink ................................................................................. 25

4.1 Access AT Commands ............................................................................................................................................. 25

4.2 Set Transmit Interval Time ....................................................................................................................................... 26

4.3 Set Interrupt Mode ..................................................................................................................................................... 27

5. FAQ .................................................................................................................................................................................. 27

5.1 What is the frequency plan for LDDS45? ............................................................................................................... 27

5.2 How to change the LoRa Frequency Bands/Region ............................................................................................. 27

6. Trouble Shooting ............................................................................................................................................................ 27

6.1 AT Command input doesn't work ............................................................................................................................ 27

7. Order Info ........................................................................................................................................................................ 28

8. Packing Info ..................................................................................................................................................................... 28

9. Support ............................................................................................................................................................................. 28

Page 2 / 28 - last modiﬁed by Xiaoling on 2022/10/27 17:11

User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual



Table of Contents:

•1. Introduction

•1.1 What is LoRaWAN Distance Detection Sensor

•1.2 Features

•1.3 Speciﬁcation

•1.3.1 Rated environmental conditions

•1.3.2 Eﬀective measurement range Reference beam pattern

•1.5 Applications

•1.6 Pin mapping and power on

Page 3 / 28 - last modiﬁed by Xiaoling on 2022/10/27 17:11

User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual

•2. Conﬁgure LDDS45 to connect to LoRaWAN network

•2.1 How it works

•2.2 Quick guide to connect to LoRaWAN server (OTAA)

•2.3 Uplink Payload

•2.3.1 Battery Info

•2.3.2 Distance

•2.3.3 Interrupt Pin

•2.3.4 DS18B20 Temperature sensor

•2.3.5 Sensor Flag

•2.3.6 Decode payload in The Things Network

•2.4 Uplink Interval

•2.5 Show Data in DataCake IoT Server

•2.6 Frequency Plans

•2.6.1 EU863-870 (EU868)

•2.6.2 US902-928(US915)

•2.6.3 CN470-510 (CN470)

•2.6.4 AU915-928(AU915)

•2.6.5 AS920-923 & AS923-925 (AS923)

•2.6.6 KR920-923 (KR920)

•2.6.7 IN865-867 (IN865)

•2.7 LED Indicator

•2.8 Firmware Change Log

•2.9 Mechanical

•3. Battery & How to replace

•3.1 Battery Type

•3.2 Replace Battery

•3.3 Power Consumption Analyze

•3.3.1 Battery Note

•3.3.2 Replace the battery

•4. Conﬁgure LDDS45 via AT Command or LoRaWAN Downlink

•4.1 Access AT Commands

•4.2 Set Transmit Interval Time

•4.3 Set Interrupt Mode

•5. FAQ

•5.1 What is the frequency plan for LDDS45?

•5.2 How to change the LoRa Frequency Bands/Region

•6. Trouble Shooting

•6.1 AT Command input doesn't work

•7. Order Info

•8. Packing Info

•9. Support

1. Introduction

1.1 What is LoRaWAN Distance Detection Sensor



The Dragino LDDS45 is a 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

ultrasonic sensingtechnology for distance measurement, and temperature compensation is performed

internally to improve the reliability of data. The LDDS45 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.

It detects the distance between the measured object and the sensor, and uploads the value via wireless to

LoRaWAN IoT Server.

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User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual

The LoRa wireless technology used in LDDS45 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.

LDDS45 is powered by 8500mAh Li-SOCI2 battery; It is designed for long term use up to 10 years*.

Each LDDS45 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.

*Actually lifetime depends on network coverage and uplink interval and other factors.



1.2 Features

• LoRaWAN 1.0.3 Class A

• Ultra-low power consumption

• Distance Detection by Ultrasonic technology

• Flat object range 30mm - 4500mm

• Accuracy: ±(1cm+S*0.3%) (S: Distance)

• Measure Angle: 60°

• Cable Length : 25cm

• Bands: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865

• AT Commands to change parameters

• Uplink on periodically

• Downlink to change conﬁgure

• IP66 Waterproof Enclosure

• 8500mAh Battery for long term use

1.3 Speciﬁcation

1.3.1 Rated environmental conditions

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User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual

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)

1.3.2 Eﬀective measurement range Reference beam pattern

(1) The tested object is a white cylindrical tube made of PVC, with a height of 100cm and a diameter of

7.5cm.

(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.

Page 6 / 28 - last modiﬁed by Xiaoling on 2022/10/27 17:11

User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual

1.5 Applications

• 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

1.6 Pin mapping and power on

2. Conﬁgure LDDS45 to connect to LoRaWAN

network

2.1 How it works

The LDDS45 is conﬁgured as LoRaWAN OTAA Class A mode by default. It has OTAA keys to join LoRaWAN

network. To connect a LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and power

on the LDDS45. If there is coverage of the LoRaWAN network, it will automatically join the network via OTAA and

start to send the sensor value

In case you can't set the OTAA keys in the LoRaWAN OTAA server, and you have to use the keys from the server,

you can use AT Commandsto set the keys in the LDDS45.

2.2 Quick guide to connect to LoRaWAN server (OTAA)

Following is an example for how to join the TTN v3 LoRaWAN Network. Below is the network structure; we use the

LG308 as a LoRaWAN gateway in this example.



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User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual



The LG308 is already set to connected to TTN network, so what we need to now is conﬁgure the TTN server.



Step 1: Create a device in TTN with the OTAA keys from LDDS45.

Each LDDS45 is shipped with a sticker with the default device keys, user can ﬁnd this sticker in the box. it looks like

below.

For OTAA registration, we need to set APP EUI/ APP KEY/ DEV EUI. Some server might no need to set APP EUI.

Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:

Add APP EUI in the application

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User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual

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User Manual for LoRaWAN End Nodes - LDDS45 - LoRaWAN Distance Detection Sensor User Manual

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