Wiki source code of LDS40-NB -- NB-IoT LiDAR ToF Distance Sensor User Manual

Last modified by Xiaoling on 2024/05/15 09:43

version	line-number	content
101.2	1
	2
84.2	3	(% style="text-align:center" %)
103.2	4	[[image:image-20231017170656-1.png\|\|height="573" width="833"]]
1.1	5
	6
85.2	7
	8
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	11
103.2	12
82.23	13	Table of Contents:
30.1	14
1.1	15	{{toc/}}
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	17
	18
	19
	20
	21
31.1	22	= 1. Introduction =
1.1	23
103.2	24	== 1.1 What is LDS40-NB NB-IoT LiDAR ToF Distance Sensor ==
1.1	25
39.6	26
103.6	27	The Dragino LDS40-NB is a (% style="color:blue" %)NB-IoT LiDAR ToF (Time of Flight) Distance Sensor(%%) for Internet of Things solution. It is capable of measuring the distance to objects as close as 0m to 40m. The LiDAR probe uses (% style="color:blue" %)laser induction technology(%%) for distance measurement.
1.1	28
103.3	29	The LDS40-NB can be applied to scenarios such as horizontal distance measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, etc.
1.1	30
101.3	31	It detects the distance between the measured object and the sensor, and uploads the value via wireless to NB-IoT IoT Server.
100.3	32
103.3	33	LDS40-NB supports different uplink methods including (% style="color:blue" %)MQTT, MQTTs, UDP & TCP(%%) for different application requirement, and support uplinks to various IoT Servers.
1.1	34
103.3	35	LDS40-NB (% style="color:blue" %)supports BLE configure (%%)and(% style="color:blue" %) OTA update(%%) which make user easy to use.
1.1	36
103.3	37	LDS40-NB is powered by (% style="color:blue" %)8500mAh Li-SOCI2 battery(%%), it is designed for long-term use up to several years.
1.1	38
103.3	39	LDS40-NB has optional built-in SIM card and default IoT server connection version. Which makes it works with simple configuration.
1.1	40
103.2	41	[[image:image-20231017170816-2.png\|\|height="324" width="878"]]
1.1	42
	43
	44	== 1.2 Features ==
	45
39.6	46
70.3	47	* NB-IoT Bands: B1/B2/B3/B4/B5/B8/B12/B13/B17/B18/B19/B20/B25/B28/B66/B70/B85 @H-FDD
1.1	48	* Ultra-low power consumption
100.5	49	* Laser technology for distance detection
103.10	50	* Measure Distance: 0.1m ~~ 40m @ 90% Reflectivity; 0.1m ~~ 13.5m @ 10% Reflectivity
103.4	51	* Distance resolution: 1cm
70.3	52	* Multiply Sampling and one uplink
	53	* Support Bluetooth v5.1 remote configure and update firmware
1.1	54	* Uplink on periodically
	55	* Downlink to change configure
103.4	56	* IP65 Waterproof Enclosure
1.1	57	* 8500mAh Battery for long term use
70.3	58	* Nano SIM card slot for NB-IoT SIM
1.1	59
	60	== 1.3 Specification ==
	61
	62
82.28	63	(% style="color:blue" %)Common DC Characteristics:
1.1	64
84.4	65	* Supply Voltage: 2.5v ~~ 3.6v
1.1	66	* Operating Temperature: -40 ~~ 85°C
	67
100.5	68	(% style="color:blue" %)Probe Specification:
	69
103.10	70	* Storage temperature：-30°C~~80°C
	71	* Operating temperature: -20°C~~60°C
100.5	72	* Measure Distance:
103.10	73	** 0.1m ~~ 40m @ 90% Reflectivity
	74	** 0.1m ~~ 13.5m @ 10% Reflectivity
	75	* Distance resolution: 1cm
	76	* Ambient light immunity: 100klux
100.5	77	* Enclosure rating : IP65
103.10	78	* Light source : VCSEL
100.5	79	* Central wavelength : 850nm
103.10	80	* FOV : 3°
100.5	81	* Material of enclosure : ABS+PC
103.10	82	* Wire length : 75cm
100.5	83
82.28	84	(% style="color:blue" %)NB-IoT Spec:
1.1	85
82.28	86	(% style="color:#037691" %)NB-IoT Module: BC660K-GL
1.1	87
82.29	88	(% style="color:#037691" %)Support Bands:
70.4	89
	90	* B1 @H-FDD: 2100MHz
	91	* B2 @H-FDD: 1900MHz
	92	* B3 @H-FDD: 1800MHz
	93	* B4 @H-FDD: 2100MHz
	94	* B5 @H-FDD: 860MHz
	95	* B8 @H-FDD: 900MHz
	96	* B12 @H-FDD: 720MHz
	97	* B13 @H-FDD: 740MHz
	98	* B17 @H-FDD: 730MHz
	99	* B18 @H-FDD: 870MHz
	100	* B19 @H-FDD: 870MHz
	101	* B20 @H-FDD: 790MHz
	102	* B25 @H-FDD: 1900MHz
	103	* B28 @H-FDD: 750MHz
	104	* B66 @H-FDD: 2000MHz
	105	* B70 @H-FDD: 2000MHz
	106	* B85 @H-FDD: 700MHz
	107
82.28	108	(% style="color:blue" %)Battery:
1.1	109
	110	* Li/SOCI2 un-chargeable battery
	111	* Capacity: 8500mAh
70.5	112	* Self Discharge: <1% / Year @ 25°C
1.1	113	* Max continuously current: 130mA
	114	* Max boost current: 2A, 1 second
	115
82.28	116	(% style="color:blue" %)Power Consumption
1.1	117
70.4	118	* STOP Mode: 10uA @ 3.3v
	119	* Max transmit power: 350mA@3.3v
1.1	120
100.7	121	== 1.4 Applications ==
84.5	122
	123
86.5	124	* Horizontal distance measurement
	125	* Parking management system
	126	* Object proximity and presence detection
	127	* Intelligent trash can management system
	128	* Robot obstacle avoidance
	129	* Automatic control
	130	* Sewer
84.5	131
100.7	132	== 1.5 Sleep mode and working mode ==
84.5	133
	134
98.5	135	(% style="color:blue" %)Deep Sleep Mode: (%%)Sensor doesn't have any NB-IoT activate. This mode is used for storage and shipping to save battery life.
73.2	136
98.5	137	(% style="color:blue" %)Working Mode: (%%)In this mode, Sensor will work as NB-IoT Sensor to Join NB-IoT network and send out sensor data to server. Between each sampling/tx/rx periodically, sensor will be in IDLE mode), in IDLE mode, sensor has the same power consumption as Deep Sleep mode.
73.2	138
	139
100.7	140	== 1.6 Button & LEDs ==
73.2	141
	142
6.1	143	[[image:Main.User Manual for LoRaWAN End Nodes.D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual.WebHome@1675071855856-879.png]]
1.1	144
	145
14.13	146	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
80.11	147	\|=(% style="width: 167px;background-color:#4F81BD;color:white" %)Behavior on ACT\|=(% style="width: 117px;background-color:#4F81BD;color:white" %)Function\|=(% style="width:225px;background-color:#4F81BD;color:white" %)Action
1.1	148	\|(% style="width:167px" %)Pressing ACT between 1s < time < 3s\|(% style="width:117px" %)Send an uplink\|(% style="width:225px" %)(((
73.2	149	If sensor has already attached to NB-IoT network, sensor will send an uplink packet, (% style="color:blue" %)blue led (%%)will blink once.
1.1	150	Meanwhile, BLE module will be active and user can connect via BLE to configure device.
	151	)))
	152	\|(% style="width:167px" %)Pressing ACT for more than 3s\|(% style="width:117px" %)Active Device\|(% style="width:225px" %)(((
73.2	153	(% style="color:green" %)Green led(%%) will fast blink 5 times, device will enter (% style="color:#037691" %)OTA mode(%%) for 3 seconds. And then start to attach NB-IoT network.
1.1	154	(% style="color:green" %)Green led(%%) will solidly turn on for 5 seconds after joined in network.
73.2	155	Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device attach NB-IoT network or not.
1.1	156	)))
6.1	157	\|(% style="width:167px" %)Fast press ACT 5 times.\|(% style="width:117px" %)Deactivate Device\|(% style="width:225px" %)(% style="color:red" %)Red led(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
1.1	158
99.2	159	(% style="color:red" %)Note: When the device is executing a program, the buttons may become invalid. It is best to press the buttons after the device has completed the program execution.
	160
	161
100.7	162	== 1.7 BLE connection ==
1.1	163
	164
103.8	165	LDS40-NB support BLE remote configure and firmware update.
1.1	166
	167
	168	BLE can be used to configure the parameter of sensor or see the console output from sensor. BLE will be only activate on below case:
	169
	170	* Press button to send an uplink
	171	* Press button to active device.
	172	* Device Power on or reset.
	173
	174	If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.
	175
	176
120.2	177	== 1.8 Pin Definitions , Switch & SIM Direction ==
1.1	178
73.3	179
113.2	180	[[image:image-20231107091343-1.png\|\|height="441" width="776"]]
1.1	181
43.1	182
100.7	183	=== 1.8.1 Jumper JP2 ===
43.1	184
73.3	185
	186	Power on Device when put this jumper.
	187
	188
100.7	189	=== 1.8.2 BOOT MODE / SW1 ===
73.3	190
	191
82.31	192	1) (% style="color:blue" %)ISP(%%): upgrade mode, device won't have any signal in this mode. but ready for upgrade firmware. LED won't work. Firmware won't run.
73.3	193
82.31	194	2) (% style="color:blue" %)Flash(%%): work mode, device starts to work and send out console output for further debug
73.3	195
	196
100.7	197	=== 1.8.3 Reset Button ===
73.3	198
80.2	199
73.3	200	Press to reboot the device.
	201
1.1	202
120.2	203	=== 1.8.4 SIM Card Direction ===
	204
	205
	206	See this link. [[How to insert SIM Card>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].
	207
	208
100.7	209	== 1.9 Mechanical ==
84.14	210
	211	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143884058-338.png?rev=1.1\|\|alt="1675143884058-338.png"]]
	212
	213	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143899218-599.png?rev=1.1\|\|alt="1675143899218-599.png"]]
	214
	215	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/D20-LBD22-LBD23-LB_LoRaWAN_Temperature_Sensor_User_Manual/WebHome/1675143909447-639.png?rev=1.1\|\|alt="1675143909447-639.png"]]
	216
	217
	218	(% style="color:blue" %)Probe Mechanical:
	219
88.8	220
103.11	221	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS40-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1666948963951-832.png?rev=1.1\|\|alt="1666948963951-832.png"]]
84.14	222
88.8	223
103.8	224	= 2. Use LDS40-NB to communicate with IoT Server =
1.1	225
80.2	226	== 2.1 Send data to IoT server via NB-IoT network ==
1.1	227
	228
103.8	229	The LDS40-NB is equipped with a NB-IoT module, the pre-loaded firmware in LDS40-NB will get environment data from sensors and send the value to local NB-IoT network via the NB-IoT module. The NB-IoT network will forward this value to IoT server via the protocol defined by LDS40-NB.
1.1	230
80.2	231	Below shows the network structure:
1.1	232
103.7	233	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LDS40-NB_NB-IoT_LiDAR_ToF_Distance_Sensor_User_Manual/WebHome/image-20231017170816-2.png?width=878&height=324&rev=1.1\|\|alt="image-20231017170816-2.png"]]
1.1	234
	235
103.8	236	There are two version: (% style="color:blue" %)-GE(%%) and (% style="color:blue" %)-1D(%%) version of LDS40-NB.
1.1	237
	238
101.4	239	(% style="color:blue" %)GE Version(%%): This version doesn't include SIM card or point to any IoT server. User needs to use AT Commands to configure below two steps to set LDS12-NB send data to IoT server.
1.1	240
82.19	241	* Install NB-IoT SIM card and configure APN. See instruction of [[Attach Network>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H2.AttachNetwork]].
80.4	242
82.19	243	* Set up sensor to point to IoT Server. See instruction of [[Configure to Connect Different Servers>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.Configuretoconnecttodifferentservers]].
1.1	244
80.2	245	Below shows result of different server as a glance.
1.1	246
80.9	247	(% border="1" cellspacing="4" style="width:515px" %)
81.2	248	\|(% style="background-color:#4f81bd; color:white; width:100px" %)Servers\|(% style="background-color:#4f81bd; color:white; width:300px" %)Dash Board\|(% style="background-color:#4f81bd; color:white; width:115px" %)Comments
82.24	249	\|(% style="width:127px" %)[[Node-Red>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.5A0Node-RedA028viaA0MQTT29]]\|(% style="width:385px" %)(((
	250	(% style="text-align:center" %)
	251	[[image:image-20230819113244-8.png\|\|height="183" width="367"]]
	252	)))\|(% style="width:170px" %)
	253	\|(% style="width:127px" %)[[DataCake>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]]\|(% style="width:385px" %)(((
	254	(% style="text-align:center" %)
82.25	255	[[image:image-20230819113244-9.png\|\|height="119" width="367"]]
82.24	256	)))\|(% style="width:170px" %)
80.9	257	\|(% style="width:127px" %)[[Tago.IO>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.7A0Tago.ioA028viaA0MQTT29]]\|(% style="width:385px" %) \|(% style="width:170px" %)
	258	\|(% style="width:127px" %)[[General UDP>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.1GeneralA0UDPA0Connection]]\|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board\|(% style="width:170px" %)
	259	\|(% style="width:127px" %)[[General MQTT>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.2GeneralA0MQTTA0Connection]]\|(% style="width:385px" %)Raw Payload. Need Developer to design Dash Board\|(% style="width:170px" %)
82.24	260	\|(% style="width:127px" %)[[ThingSpeak>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.3A0ThingSpeakA028viaA0MQTT29]]\|(% style="width:385px" %)(((
	261	(% style="text-align:center" %)
82.25	262	[[image:image-20230819113244-10.png\|\|height="104" width="367"]]
82.24	263	)))\|(% style="width:170px" %)
	264	\|(% style="width:127px" %)[[ThingsBoard>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.6A0ThingsBoard.CloudA028viaA0MQTT29]]\|(% style="width:385px" %)(((
	265	(% style="text-align:center" %)
82.25	266	[[image:image-20230819113244-11.png\|\|height="141" width="367"]]
82.24	267	)))\|(% style="width:170px" %)
80.2	268
103.8	269	(% style="color:blue" %)1D Version(%%): This version has 1NCE SIM card pre-installed and configure to send value to DataCake. User Just need to select the sensor type in DataCake and Activate LDS40-NB and user will be able to see data in DataCake. See here for [[DataCake Config Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/General%20Configure%20to%20Connect%20to%20IoT%20server%20for%20-NB%20%26%20-NS%20NB-IoT%20models/#H3.4Datacake]].
80.2	270
	271
	272	== 2.2 Payload Types ==
	273
	274
103.8	275	To meet different server requirement, LDS40-NB supports different payload type.
1.1	276
81.2	277	Includes:
1.1	278
82.21	279	* [[General JSON format payload>>\|\|anchor="H2.2.1GeneralJsonFormat28Type3D529"]]. (Type=5)
80.7	280
82.21	281	* [[HEX format Payload>>\|\|anchor="H2.2.2HEXformatPayload28Type3D029"]]. (Type=0)
80.7	282
82.21	283	* [[ThingSpeak Format>>\|\|anchor="H2.2.4ThingSpeakPayload28Type3D129"]]. (Type=1)
80.7	284
82.21	285	* [[ThingsBoard Format>>\|\|anchor="H2.2.3ThingsBoardPayload28Type3D329"]]. (Type=3)
1.1	286
80.3	287	User can specify the payload type when choose the connection protocol. Example:
1.1	288
81.2	289	(% style="color:#037691" %)AT+PRO=2,0 (%%) ~/~/ Use UDP Connection & hex Payload
1.1	290
80.8	291	(% style="color:#037691" %)AT+PRO=2,5 (%%) ~/~/ Use UDP Connection & Json Payload
1.1	292
81.2	293	(% style="color:#037691" %)AT+PRO=3,5 (%%) ~/~/ Use MQTT Connection & Json Payload
1.1	294
	295
82.20	296	=== 2.2.1 General Json Format(Type~=5) ===
1.1	297
80.8	298
80.3	299	This is the General Json Format. As below:
1.1	300
117.1	301	(% style="color:#4472c4" %){"IMEI":"866207052559857","Model":"LDS40-NB","ds18b20_temperature":-0.1,"distance":357,"distance_signal_strength":1285,"temperature":29,"battery":3.51,"signal":22,"1":{358,1301,27,2023/11/06 10:01:07},"2":{357,1293,27,2023/11/06 09:46:07},"3":{67,3047,27,2023/11/06 08:56:32},"4":{12,1262,27,2023/11/06 08:21:48},"5":{10,5873,29,2023/11/06 07:52:21},"6":{2175,736,46,2023/11/06 07:05:43},"7":{2204,843,51,2023/11/06 06:42:58},"8":{2252,995,58,2023/11/06 06:27:58}}
1.1	302
117.1	303	[[image:image-20231107092434-3.png\|\|height="712" width="955"]]
93.2	304
	305
81.2	306	(% style="color:red" %)Notice, from above payload:
1.1	307
104.2	308	* DS18b20_temperature, Distance, Distance signal strength, Temperature, Battery & Signal are the value at uplink time.
1.1	309
119.1	310	* Json entry 1 ~~ 8 are the last 1 ~~ 8 sampling data as specify by (% style="color:#037691" %)AT+NOUD=8 (%%)Command. Each entry includes (from left to right): Distance, Distance signal strength, LIDAR Temperature, Sampling time.
1.1	311
81.2	312	=== 2.2.2 HEX format Payload(Type~=0) ===
1.1	313
	314
80.3	315	This is the HEX Format. As below:
1.1	316
107.2	317	(% style="color:#4472c4" %)f86620705255985710640dba1a01000000000b04e3001c65489ec5000a16f1001d65489b35087f02e0002e65489047089c034b003365488af208cc03e3003a6548876e08bb018c001e6548806a08cb018f001e654879d308cf018d001e6548764e08d60189001d654872ca
1.1	318
117.1	319	[[image:image-20231107092040-2.png\|\|height="199" width="1215"]]
6.1	320
1.1	321
91.2	322	If we use the MQTT client to subscribe to this MQTT topic, we can see the following information when the NB sensor uplink data.
	323
	324
107.2	325	[[image:image-20231106161710-2.png\|\|height="758" width="1012"]]
91.2	326
80.4	327	(% style="color:blue" %)Version:
1.1	328
80.3	329	These bytes include the hardware and software version.
1.1	330
107.2	331	(% style="color:#037691" %)Higher byte:(%%) Specify Sensor Model: 0x10 for LDS40-NB
1.1	332
91.4	333	(% style="color:#037691" %)Lower byte:(%%) Specify the software version: 0x64=100, means firmware version 1.0.0
1.1	334
	335
81.2	336	(% style="color:blue" %)BAT (Battery Info):
1.1	337
91.4	338	Ex1: 0x0DB4 = 3508mV
1.1	339
	340
101.5	341	(% style="color:blue" %)DS18B20 Temperature sensor:
1.1	342
101.4	343	This is optional, user can connect external DS18B20 sensor to the +3.3v, 1-wire and GND pin . and this field will report temperature.
1.1	344
101.4	345	Example:
1.1	346
101.4	347	If payload is: 0105H: (0105 & FC00 == 0), temp = 0105H /10 = 26.1 degree
1.1	348
101.4	349	If payload is: FF3FH : (FF3F & FC00 == 1) , temp = (FF3FH - 65536)/10 = -19.3 degrees.
1.1	350
	351
101.5	352	(% style="color:blue" %)Distance:
1.1	353
103.12	354	Represents the distance value of the measurement output, the default unit is cm, and the value range parsed as a decimal number is 0-4000. In actual use, when the signal strength value Strength.
1.1	355
101.4	356	Example:
1.1	357
103.12	358	If the data you get from the register is __0x0B 0xEA__, the distance between the sensor and the measured object is 0BEA(H) = 3050 (D)/10 = 305cm.
91.4	359
	360
101.5	361	(% style="color:blue" %)Distance signal strength:
91.4	362
103.14	363	Refers to the signal strength, the default output value will be between 0-65535. When the ranging gear is fixed, the farther the ranging, the lower the signal strength.
101.4	364
103.14	365	In actual use, when the signal strength value Strength≤60, the measured value of Dist is considered unreliable, and the default output is 4500. When the signal strength is greater than 60 and the actual distance is and the actual distance is 45~~60m, the output value of Dist is 4500. When the signal strength is greater than 60 and the actual distance is more than 60m, there will be over-period data appearing as 0 or other abnormal values.
	366
101.4	367	Example:
	368
	369	If payload is: 01D7(H)=471(D), distance signal strength=471, 471>100,471≠65535, the measured value of Dist is considered credible.
	370
	371	Customers can judge whether they need to adjust the environment based on the signal strength.
	372
	373
101.5	374	(% style="color:blue" %)Interrupt Pin & Interrupt Level:
101.4	375
101.10	376	This data field shows if this packet is generated by interrupt or not.
101.4	377
101.10	378	(% style="color:red" %)Note: The Internet Pin is a separate pin in the screw terminal.
101.4	379
	380	Example:
	381
	382	If byte[0]&0x01=0x00 : Normal uplink packet.
	383
	384	If byte[0]&0x01=0x01 : Interrupt Uplink Packet.
	385
	386
101.5	387	(% style="color:blue" %)LiDAR temp:
101.4	388
	389	Characterize the internal temperature value of the sensor.
	390
	391	Example:
101.5	392
120.1	393	If payload is: 001C(H) <<24>>24=28(D), LiDAR temp=28°C.
101.4	394
120.1	395	If payload is: FFF2(H) <<24>>24=-14(D), LiDAR temp=-14°C.
101.4	396
	397
112.1	398	(% style="color:blue" %)TimeStamp:
103.12	399
112.1	400	Unit TimeStamp Example: 64d49439(H) = 1691653177(D)
103.12	401
112.1	402	Put the decimal value into this link([[https:~~/~~/www.epochconverter.com)>>https://www.epochconverter.com]]) to get the time.
103.12	403
	404
81.2	405	=== 2.2.3 ThingsBoard Payload(Type~=3) ===
1.1	406
80.8	407
80.3	408	Type3 payload special design for ThingsBoard, it will also configure other default server to ThingsBoard.
1.1	409
111.2	410	(% style="color:#4472c4" %)** { "IMEI": "866207052559857",
	411	"Model": "LDS40-NB",
	412	"ds18b20_temperature": -0.1,
	413	"distance": 356,
	414	"distance_signal_strength": 1298,
	415	"temperature": 28,
	416	"battery": 3.49,
	417	"signal": 22
	418	}**
46.1	419
111.2	420	[[image:image-20231106173419-7.png\|\|height="586" width="1127"]]
1.1	421
97.2	422
81.2	423	=== 2.2.4 ThingSpeak Payload(Type~=1) ===
1.1	424
80.8	425
119.1	426	This payload meets ThingSpeak platform requirement. It includes six fields. Form 1~~6 are:
1.1	427
119.1	428	DS18b20_temperature, Distance, Distance signal strength, Temperature, Battery & Signal. This payload type only valid for ThingsSpeak Platform.
14.22	429
80.3	430	As below:
1.1	431
111.3	432	(% style="color:#4472c4" %)field1=Distance value&field2=Distance signal strength value&field3=Temperature value&field4=Battery value&field5=Signal value&field6=DS18B20_temperature value
1.1	433
110.2	434	[[image:image-20231106165759-6.png\|\|height="891" width="876"]]
84.24	435
93.2	436
111.3	437	== 2.3 Test Uplink and Change Update Interval ==
101.3	438
	439
80.4	440	By default, Sensor will send uplinks (% style="color:blue" %)every 2 hours(%%) & AT+NOUD=8
1.1	441
80.4	442	User can use below commands to change the (% style="color:blue" %)uplink interval.
1.1	443
82.2	444	(% style="color:#037691" %)AT+TDC=600 (%%) ~/~/ Set Update Interval to 600s
1.1	445
80.3	446	User can also push the button for more than 1 seconds to activate an uplink.
1.1	447
	448
111.3	449	== 2.4 Multi-Samplings and One uplink ==
39.5	450
126.1	451	(% style="color:red" %)Notice: The AT+NOUD feature is upgraded to Clock Logging, please refer [[Clock Logging Feature>>\|\|anchor="H2.8Clocklogging28Sincefirmwareversionv1.2.129"]]
80.4	452
103.8	453	To save battery life, LDS40-NB will sample distance data every 15 minutes and send one uplink every 2 hours. So each uplink it will include 8 stored data + 1 real-time data. They are defined by:
1.1	454
82.6	455	* (% style="color:#037691" %)AT+TR=900 (%%) ~/~/ The unit is seconds, and the default is to record data once every 900 seconds (15 minutes, the minimum can be set to 180 seconds)
1.1	456
82.12	457	* (% style="color:#037691" %)AT+NOUD=8 (%%)~/~/ The device uploads 8 sets of recorded data by default. Up to 32 sets of record data can be uploaded.
1.1	458
80.3	459	The diagram below explains the relationship between TR, NOUD, and TDC more clearly:
1.1	460
82.2	461	[[image:1692424376354-959.png]]
1.1	462
	463
111.3	464	== 2.5 Trggier an uplink by external interrupt ==
1.1	465
80.5	466
103.8	467	LDS40-NB has an external trigger interrupt function. Users can use the PB15 pin to trigger the upload of data packets.
39.5	468
80.5	469	(% style="color:blue" %)AT command:
46.1	470
82.6	471	* (% style="color:#037691" %)AT+INTMOD (%%) ~/~/ Set the trigger interrupt mode
46.1	472
82.6	473	* (% style="color:#037691" %)AT+INTMOD=0 (%%) ~/~/ Disable Interrupt
1.1	474
82.6	475	* (% style="color:#037691" %)AT+INTMOD=1 (%%) ~/~/ Trigger by rising and falling edge
80.5	476
82.6	477	* (% style="color:#037691" %)AT+INTMOD=2 (%%) ~/~/ Trigger by falling edge
80.5	478
82.6	479	* (% style="color:#037691" %)AT+INTMOD=3 (%%) ~/~/ Trigger by rising edge
80.5	480
118.2	481	== 2.6 LiDAR ToF Measurement ==
101.6	482
111.3	483	=== 2.6.1 Principle of Distance Measurement ===
101.6	484
	485
	486	The LiDAR probe is based on TOF, namely, Time of Flight principle. To be specific, the product emits modulation wave of near infrared ray on a periodic basis, which will be reflected after contacting object. The product obtains the time of flight by measuring round-trip phase difference and then calculates relative range between the product and the detection object, as shown below.
	487
	488	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LLDS12-LoRaWAN%20LiDAR%20ToF%20Distance%20Sensor%20User%20Manual/WebHome/1654831757579-263.png?rev=1.1\|\|alt="1654831757579-263.png"]]
	489
	490
111.3	491	=== 2.6.2 Distance Measurement Characteristics ===
101.6	492
	493
103.16	494	The detection angle of the LDS40-NB is 3 degrees, and the size of the light spot at different distances is the side length of the detection range. The size of the light spot at different distances is the side length of the detection range. The side length of the detection range (the shape is square), as shown.
101.6	495
103.16	496	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:510px" %)
	497	\|(% style="width:240px" %)Distance(m)\|(% style="width:26px" %)1\|(% style="width:35px" %)2\|(% style="width:36px" %)3\|(% style="width:32px" %)5\|(% style="width:33px" %)7\|(% style="width:34px" %)10\|(% style="width:43px" %)20\|(% style="width:41px" %)30\|(% style="width:41px" %)40
	498	\|(% style="width:240px" %)Detection range side length (cm)\|(% style="width:26px" %)5\|(% style="width:35px" %)10\|(% style="width:36px" %)16\|(% style="width:32px" %)26\|(% style="width:33px" %)37\|(% style="width:34px" %)52\|(% style="width:43px" %)105\|(% style="width:41px" %)156\|(% style="width:41px" %)208
101.6	499
103.17	500	Note that generally, the side length of the detected target object should be greater than the side length of the detection range of the LDS40-NB; when the detected object is smaller than the detection range side length; when the detected object is smaller than the detection range side length, the effective range of the radar will be reduced.
101.6	501
	502
111.3	503	=== 2.6.3 Notice of usage ===
101.6	504
	505
	506	Possible invalid /wrong reading for LiDAR ToF tech:
	507
	508	* Measure high reflectivity object such as: Mirror, Smooth ceramic tile, static milk surface, will have possible wrong readings.
103.19	509
101.6	510	* While there is transparent object such as glass, water drop between the measured object and the LiDAR sensor, the reading might be wrong.
103.19	511
101.6	512	* The LiDAR probe is cover by dirty things; the reading might be wrong. In this case, need to clean the probe.
103.19	513
101.6	514	* The sensor window is made by Acrylic. Don't touch it with alcohol material. This will destroy the sensor window.
	515
111.3	516	=== 2.6.4 Reflectivity of different objects ===
101.6	517
	518
	519	(% border="1" cellspacing="5" style="background-color:#f2f2f2; width:379px" %)
	520	\|=(% style="width: 54px;background-color:#4F81BD;color:white" %)Item\|=(% style="width: 231px;background-color:#4F81BD;color:white" %)Material\|=(% style="width: 94px;background-color:#4F81BD;color:white" %)Relectivity
	521	\|(% style="width:53px" %)1\|(% style="width:229px" %)Black foam rubber\|(% style="width:93px" %)2.4%
	522	\|(% style="width:53px" %)2\|(% style="width:229px" %)Black fabric\|(% style="width:93px" %)3%
	523	\|(% style="width:53px" %)3\|(% style="width:229px" %)Black rubber\|(% style="width:93px" %)4%
	524	\|(% style="width:53px" %)4\|(% style="width:229px" %)Coal (different types of coal)\|(% style="width:93px" %)4~~8%
	525	\|(% style="width:53px" %)5\|(% style="width:229px" %)Black car paint\|(% style="width:93px" %)5%
	526	\|(% style="width:53px" %)6\|(% style="width:229px" %)Black Jam\|(% style="width:93px" %)10%
	527	\|(% style="width:53px" %)7\|(% style="width:229px" %)Opaque black plastic\|(% style="width:93px" %)14%
	528	\|(% style="width:53px" %)8\|(% style="width:229px" %)Clean rough board\|(% style="width:93px" %)20%
	529	\|(% style="width:53px" %)9\|(% style="width:229px" %)Translucent plastic bottle\|(% style="width:93px" %)62%
	530	\|(% style="width:53px" %)10\|(% style="width:229px" %)Carton cardboard\|(% style="width:93px" %)68%
	531	\|(% style="width:53px" %)11\|(% style="width:229px" %)Clean pine\|(% style="width:93px" %)70%
	532	\|(% style="width:53px" %)12\|(% style="width:229px" %)Opaque white plastic\|(% style="width:93px" %)87%
	533	\|(% style="width:53px" %)13\|(% style="width:229px" %)White Jam\|(% style="width:93px" %)90%
	534	\|(% style="width:53px" %)14\|(% style="width:229px" %)Kodak Standard Whiteboard\|(% style="width:93px" %)100%
	535	\|(% style="width:53px" %)15\|(% style="width:229px" %)(((
	536	Unpolished white metal surface
	537	)))\|(% style="width:93px" %)130%
	538	\|(% style="width:53px" %)16\|(% style="width:229px" %)Glossy light metal surface\|(% style="width:93px" %)150%
	539	\|(% style="width:53px" %)17\|(% style="width:229px" %)stainless steel\|(% style="width:93px" %)200%
	540	\|(% style="width:53px" %)18\|(% style="width:229px" %)Reflector plate, reflective tape\|(% style="width:93px" %)>300%
	541
111.3	542	== 2.7 Set Transmit Interval Time ==
101.6	543
101.14	544
	545	(((
101.16	546	Feature: Change NB-IoT End Node Transmit Interval.
101.14	547	)))
	548
	549	(((
	550	(% style="color:blue" %)AT Command: AT+TDC
	551	)))
	552
	553	(% border="1" cellspacing="4" style="background-color:#f2f2f2; width:510px" %)
	554	\|=(% style="width: 156px;background-color:#4F81BD;color:white" %)Command Example\|=(% style="width: 137px;background-color:#4F81BD;color:white" %)Function\|=(% style="background-color:#4F81BD;color:white" %)Response
	555	\|(% style="width:156px" %)AT+TDC=?\|(% style="width:137px" %)Show current transmit Interval\|(((
	556	30000
	557	OK
	558	the interval is 30000ms = 30s
	559	)))
	560	\|(% style="width:156px" %)AT+TDC=60000\|(% style="width:137px" %)Set Transmit Interval\|(((
	561	OK
	562	Set transmit interval to 60000ms = 60 seconds
	563	)))
	564
	565	(((
	566	(% style="color:blue" %)Downlink Command: 0x01
	567	)))
	568
	569	(((
	570	Format: Command Code (0x01) followed by 3 bytes time value.
	571	)))
	572
	573	(((
	574	If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.
	575	)))
	576
	577	* (((
	578	Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds
	579	)))
	580	* (((
	581	Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds
124.1	582	)))
118.3	583
124.1	584	== 2.8 Clock logging (Since firmware version v1.2.1) ==
	585
124.2	586
124.1	587	Sometimes when we deploy lots of end nodes in field. We want all sensors sample data at the same time, and upload these data together for analyze. In such case, we can use clock loging feature.
	588
	589	We can use this command to set the start time of data recording and the time interval to meet the requirements of the specific collection time of data.
	590
	591	* (% style="color:blue" %)AT Command: AT+CLOCKLOG=a,b,c,d
	592
	593	(% style="color:blue" %)a:(%%) 0: Disable Clock logging. 1: Enable Clock Logging
	594
124.2	595	(% style="color:blue" %)b:(%%) Specify First sampling start second: range (0 ~~ 3599, 65535) ~/~/ (% style="color:red" %)Note:(%%) If parameter b is set to 65535, the log period starts after the node accesses the network and sends packets.
124.1	596
	597	(% style="color:blue" %)c:(%%) Specify the sampling interval: range (0 ~~ 255 minutes)
	598
	599	(% style="color:blue" %)d:(%%) How many entries should be uplink on every TDC (max 32)
	600
	601	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/SPH01-NB_NB-IoT_Soil_pH_Sensor_User_Manual/WebHome/image-20240315141254-1.png?rev=1.1\|\|alt="image-20240315141254-1.png"]]
	602
	603	Example:
	604
	605	AT+CLOCKLOG=1,65535,1,5
	606
	607	After the node sends the first packet, data is recorded to the memory at intervals of 1 minute. For each TDC uplink, the uplink load will include: battery information + the last 5 memory records (payload + timestamp).
	608
	609	(% class="wikigeneratedid" %)
	610	[[image:image-20240316092934-1.png\|\|height="481" width="1159"]]
	611
	612	(% class="wikigeneratedid" %)
	613	(% style="color:red" %)Note: Users need to synchronize the server time before configuring this command. If the server time is not synchronized before this command is configured, the command takes effect only after the node is reset.
	614
	615
124.2	616	== 2.9 Example Query saved historical records ==
124.1	617
	618
	619	* (% style="color:blue" %)AT Command: AT+CDP
	620
	621	This command can be used to search the saved history, recording up to 32 groups of data, each group of historical data contains a maximum of 100 bytes.
	622
	623	(% class="wikigeneratedid" %)
	624	[[image:image-20240316093055-2.png\|\|height="596" width="773"]]
	625
	626
125.2	627	== 2.10 Uplink log query ==
	628
	629
	630	* (% style="color:blue" %)AT Command: AT+GETLOG
	631
	632	This command can be used to query upstream logs of data packets.
	633
	634	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/PS-NB-NA_NB-IoT_Analog_Sensor_User_Manual/WebHome/image-20240407191922-2.png?width=903&height=631&rev=1.1\|\|alt="image-20240407191922-2.png"]]
	635
	636
126.2	637	== 2.11 Scheduled domain name resolution ==
125.2	638
	639
126.2	640	This command is used to set up scheduled domain name resolution.
125.2	641
126.2	642	(% style="color:blue" %)AT command:
	643
	644	* (% style="color:#037691" %)AT+DNSTIMER=XX (%%)~/~/ Unit: hour
	645
	646	After setting this command, domain name resolution will be performed regularly.
	647
	648
103.8	649	= 3. Configure LDS40-NB =
86.11	650
16.4	651	== 3.1 Configure Methods ==
1.1	652
	653
103.8	654	LDS40-NB supports below configure method:
1.1	655
	656	* AT Command via Bluetooth Connection (Recommended): [[BLE Configure Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]].
80.6	657
11.1	658	* AT Command via UART Connection : See [[UART Connection>>http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H2.3UARTConnectionforSN50v3basemotherboard]].
80.6	659
82.8	660	== 3.2 AT Commands Set ==
1.1	661
	662
82.8	663	AT+<CMD>? : Help on <CMD>
1.1	664
82.8	665	AT+<CMD> : Run <CMD>
1.1	666
82.8	667	AT+<CMD>=<value> : Set the value
1.1	668
82.8	669	AT+<CMD>=? : Get the value
1.1	670
	671
82.10	672	(% style="color:blue" %)General Commands
1.1	673
82.8	674	AT : Attention
1.1	675
82.9	676	AT? : Short Help
1.1	677
82.9	678	ATZ : MCU Reset
1.1	679
82.9	680	AT+TDC : Application Data Transmission Interval
1.1	681
82.9	682	AT+CFG : Print all configurations
1.1	683
82.8	684	AT+CFGMOD : Working mode selection
1.1	685
82.9	686	AT+DEUI : Get or set the Device ID
1.1	687
82.8	688	AT+INTMOD : Set the trigger interrupt mode
1.1	689
82.8	690	AT+5VT : Set extend the time of 5V power
1.1	691
82.8	692	AT+PRO : Choose agreement
1.1	693
82.9	694	AT+RXDL : Extend the sending and receiving time
1.1	695
82.9	696	AT+DNSCFG : Get or Set DNS Server
1.1	697
82.8	698	AT+GETSENSORVALUE : Returns the current sensor measurement
1.1	699
82.9	700	AT+NOUD : Get or Set the number of data to be uploaded
1.1	701
82.8	702	AT+CDP : Read or Clear cached data
1.1	703
118.1	704	AT+ALARM: Get or Set alarm of distance
1.1	705
82.9	706	AT+SERVADDR : Server Address
1.1	707
82.9	708
1.1	709
82.10	710	(% style="color:blue" %)MQTT Management
1.1	711
82.8	712	AT+CLIENT : Get or Set MQTT client
1.1	713
82.8	714	AT+UNAME : Get or Set MQTT Username
1.1	715
82.8	716	AT+PWD : Get or Set MQTT password
1.1	717
82.9	718	AT+PUBTOPIC : Get or Set MQTT publish topic
1.1	719
82.9	720	AT+SUBTOPIC : Get or Set MQTT subscription topic
1.1	721
	722
82.10	723	(% style="color:blue" %)Information
1.1	724
82.9	725	AT+FDR : Factory Data Reset
1.1	726
82.9	727	AT+PWORD : Serial Access Password
1.1	728
82.9	729	AT+LDATA : Get the last upload data
39.6	730
82.9	731	AT+CDP : Read or Clear cached data
1.1	732
82.9	733
16.4	734	= 4. Battery & Power Consumption =
14.45	735
1.1	736
103.8	737	LDS40-NB use ER26500 + SPC1520 battery pack. See below link for detail information about the battery info and how to replace.
1.1	738
	739	[[Battery Info & Power Consumption Analyze>>http://wiki.dragino.com/xwiki/bin/view/Main/How%20to%20calculate%20the%20battery%20life%20of%20Dragino%20sensors%3F/]] .
	740
	741
82.11	742	= 5. Firmware update =
1.1	743
	744
82.11	745	User can change device firmware to::
1.1	746
13.1	747	* Update with new features.
82.11	748
13.1	749	* Fix bugs.
1.1	750
103.22	751	Firmware and changelog can be downloaded from : [[Firmware download link>>https://www.dropbox.com/sh/bol5zyj6l4t6ge4/AAAtUvkHQ1tKwbVi_RCCmqFQa?dl=0]]
1.1	752
31.1	753	Methods to Update Firmware:
1.1	754
82.12	755	* (Recommended way) OTA firmware update via BLE: [[Instruction>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE_Firmware_Update_NB_Sensors_BC660K-GL/]].
82.14	756
121.1	757	* Update through UART TTL interface : [[Instruction>>http://wiki.dragino.com/xwiki/bin/view/Main/UART_Access_for_NB_ST_BC660K-GL/#H4.2UpdateFirmware28Assumethedevicealreadyhaveabootloader29]].
1.1	758
31.1	759	= 6. FAQ =
1.1	760
82.15	761	== 6.1 How can I access t BC660K-GL AT Commands? ==
1.1	762
	763
82.15	764	User can access to BC660K-GL directly and send AT Commands.
1.1	765
82.15	766	[[See BC660K-GL AT Command set>>url:https://www.dropbox.com/sh/5f6ssda5fum8rvs/AABT68l8ZzWOvZ5eg2qwOoFda?dl=0]]
1.1	767
	768
86.7	769	= 7. Trouble Shooting =
84.24	770
101.19	771	== 7.1 Significant error between the output distant value of LiDAR and actual distance ==
84.16	772
86.7	773
101.19	774	(((
	775	(% style="color:blue" %)Cause ①(%%)：Due to the physical principles of The LiDAR probe, the above phenomenon is likely to occur if the detection object is the material with high reflectivity (such as mirror, smooth floor tile, etc.) or transparent substance. (such as glass and water, etc.)
	776	)))
86.7	777
101.19	778	(((
	779	(% style="color:red" %)Troubleshooting(%%): Please avoid use of this product under such circumstance in practice.
	780	)))
86.7	781
	782
101.19	783	(((
	784	(% style="color:blue" %)Cause ②(%%): The IR-pass filters are blocked.
	785	)))
86.7	786
101.19	787	(((
	788	(% style="color:red" %)Troubleshooting(%%): please use dry dust-free cloth to gently remove the foreign matter.
	789	)))
86.7	790
	791
84.16	792	= 8. Order Info =
	793
	794
103.8	795	Part Number: (% style="color:blue" %)LDS40-NB-XX
1.1	796
82.15	797	(% style="color:red" %)XX(%%):
1.1	798
82.15	799	* (% style="color:#037691" %)GE(%%): General version ( Exclude SIM card)
1.1	800
82.15	801	* (% style="color:#037691" %)1D(%%): with 1NCE* 10 years 500MB SIM card and Pre-configure to DataCake server
1.1	802
82.31	803	(% style="color:#037691" %)1NCE SIM Card NB-IoT network coverage(%%): Austria, Belgium, Bulgaria, Croatia, Czech Republic, Denmark, Finland, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Latvia, Malta, Netherlands, Norway, Puerto Rico, Russia, Slovak , Republic, Slovenia, Spain, Sweden, Switzerland, Taiwan, USA, US Virgin Islands
1.1	804
	805
84.16	806	= 9. Packing Info =
1.1	807
39.6	808
39.1	809	(% style="color:#037691" %)Package Includes:
1.1	810
103.8	811	* LDS40-NB NB-IoT LiDAR ToF Distance sensor x 1
1.1	812
82.16	813	* External antenna x 1
	814
39.1	815	(% style="color:#037691" %)Dimension and weight:
1.1	816
82.24	817	* Device Size: 13.0 x 5 x 4.5 cm
1.1	818
82.24	819	* Device Weight: 150g
1.1	820
82.24	821	* Package Size / pcs : 14.0 x 8x 5 cm
1.1	822
82.24	823	* Weight / pcs : 180g
1.1	824
84.16	825	= 10. Support =
1.1	826
	827
31.1	828	* 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.
39.6	829
	830	* Provide as much information as possible regarding your enquiry (product models, accurately describe your problem and steps to replicate it etc) and send a mail to [[Support@dragino.cc>>mailto:Support@dragino.cc]].
75.2	831
80.9	832	(% style="display:none" %) (%%)

Wiki source code of LDS40-NB -- NB-IoT LiDAR ToF Distance Sensor User Manual

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