PS-LB -- LoRaWAN Air Water Pressure Sensor User Manual

The Dragino PS-LB series sensors are (% style="color:blue" %)**LoRaWAN Pressure Sensor**(%%) for Internet of Things solution. PS-LB can measure Air, Water pressure and liquid level and upload the sensor data via wireless to LoRaWAN IoT server.

21

)))

22

23

(((

24

The PS-LB series sensors include (% style="color:blue" %)**Thread Installation Type**(%%) and (% style="color:blue" %)**Immersion Type**(%%), it supports different pressure range which can be used for different measurement requirement.

)))

(((

The LoRa wireless technology used in PS-LB 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.

)))

(((

PS-LB supports BLE configure and wireless OTA update which make user easy to use.

)))

(((

PS-LB is powered by (% style="color:blue" %)**8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.

)))

(((

Each PS-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.

41

)))

42

43

[[image:1675071321348-194.png]]

== 1.2 Features ==

* LoRaWAN 1.0.3 Class A

50

* Ultra-low power consumption

51

* Measure air / gas or water pressure

52

* Different pressure range available

53

* Thread Installation Type or Immersion Type

54

* Monitor Battery Level

55

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

56

* Support Bluetooth v5.1 and LoRaWAN remote configure

57

* Support wireless OTA update firmware

58

* Uplink on periodically

59

* Downlink to change configure

60

* 8500mAh Battery for long term use

61

* Controllable 3.3v,5v and 12v output to power external sensor

62

63

== 1.3 Specification ==

64

65

66

(% style="color:#037691" %)**Micro Controller:**

* MCU: 48Mhz ARM

* Flash: 256KB

* RAM: 64KB

(% style="color:#037691" %)**Common DC Characteristics:**

73

74

* Supply Voltage: 2.5v ~~ 3.6v

75

* Operating Temperature: -40 ~~ 85°C

76

77

(% style="color:#037691" %)**LoRa Spec:**

78

79

* Frequency Range, Band 1 (HF): 862 ~~ 1020 Mhz

80

* Max +22 dBm constant RF output vs.

81

* RX sensitivity: down to -139 dBm.

82

* Excellent blocking immunity

83

84

(% style="color:#037691" %)**Current Input Measuring :**

* Range: 0 ~~ 20mA

* Accuracy: 0.02mA

* Resolution: 0.001mA

89

90

(% style="color:#037691" %)**Voltage Input Measuring:**

* Range: 0 ~~ 30v

* Accuracy: 0.02v

* Resolution: 0.001v

(% style="color:#037691" %)**Battery:**

97

98

* Li/SOCI2 un-chargeable battery

99

* Capacity: 8500mAh

100

* Self-Discharge: <1% / Year @ 25°C

101

* Max continuously current: 130mA

102

* Max boost current: 2A, 1 second

103

104

(% style="color:#037691" %)**Power Consumption**

105

106

* Sleep Mode: 5uA @ 3.3v

107

* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm

108

109

== 1.4 Probe Types ==

110

111

=== 1.4.1 Thread Installation Type ===

112

113

114

[[image:1675071448299-229.png]]

115

116

* Hersman Pressure Transmitter

117

* Measuring Range: -0.1 ~~ 0 ~~ 60MPa, see order info.

118

* Accuracy: 0.2% F.S

119

* Long-Term Stability: 0.2% F.S ±0.05%

120

* Overload 200% F.S

121

* Zero Temperature Drift: 0.03% FS/℃(≤100Kpa), 0.02%FS/℃(＞100Kpa)

122

* FS Temperature Drift: 0.003% FS/℃(≤100Kpa), 0.002%FS/℃(＞100Kpa)

123

* Storage temperature: -30℃~~80℃

124

* Operating temperature: -20℃~~60℃

125

* Connector Type: Various Types, see order info

126

127

=== 1.4.2 Immersion Type ===

128

129

130

[[image:1675071521308-426.png]]

131

132

* Immersion Type, Probe IP Level: IP68

133

* Measuring Range: Measure range can be customized, up to 100m.

134

* Accuracy: 0.2% F.S

135

* Long-Term Stability: ±0.2% F.S / Year

136

* Overload 200% F.S

137

* Zero Temperature Drift: ±2% F.S)

138

* FS Temperature Drift: ±2% F.S

139

* Storage temperature: -30℃~~80℃

140

* Operating temperature: -40℃~~85℃

141

* Material: 316 stainless steels

142

143

== 1.5 Probe Dimension ==

== 1.6 Application and Installation ==

148

149

=== 1.6.1 Thread Installation Type ===

150

151

152

(% style="color:blue" %)**Application:**

153

154

* Hydraulic Pressure

155

* Petrochemical Industry

156

* Health and Medical

157

* Food & Beverage Processing

158

* Auto-controlling house

159

* Constant Pressure Water Supply

160

* Liquid Pressure measuring

161

162

Order the suitable thread size and install to measure the air / liquid pressure

163

164

[[image:1675071670469-145.png]]

165

166

167

=== 1.6.2 Immersion Type ===

168

169

170

(% style="color:blue" %)**Application:**

171

172

Liquid & Water Pressure / Level detect.

173

174

[[image:1675071725288-579.png]]

175

176

177

The Immersion Type pressure sensor is shipped with the probe and device separately. When user got the device, below is the wiring to for connect the probe to the device.

178

179

180

[[image:1675071736646-450.png]]

181

182

183

[[image:1675071776102-240.png]]

184

185

186

== 1.7 Sleep mode and working mode ==

187

188

189

(% style="color:blue" %)**Deep Sleep Mode: **(%%)Sensor doesn't have any LoRaWAN activate. This mode is used for storage and shipping to save battery life.

190

191

(% style="color:blue" %)**Working Mode:** (%%)In this mode, Sensor will work as LoRaWAN Sensor to Join LoRaWAN 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.

192

193

194

== 1.8 Button & LEDs ==

195

196

197

[[image:1675071855856-879.png]]

198

199

200

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

201

|=(% style="width: 167px;" %)**Behavior on ACT**|=(% style="width: 117px;" %)**Function**|=(% style="width: 225px;" %)**Action**

202

|(% style="width:167px" %)Pressing ACT between 1s < time < 3s|(% style="width:117px" %)Send an uplink|(% style="width:225px" %)(((

203

If sensor is already Joined to LoRaWAN network, sensor will send an uplink packet, (% style="color:blue" %)**blue led** (%%)will blink once.

204

Meanwhile, BLE module will be active and user can connect via BLE to configure device.

205

)))

206

|(% style="width:167px" %)Pressing ACT for more than 3s|(% style="width:117px" %)Active Device|(% style="width:225px" %)(((

207

(% 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 JOIN LoRaWAN network.

208

(% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.

209

Once sensor is active, BLE module will be active and user can connect via BLE to configure device, no matter if device join or not join LoRaWAN network.

210

)))

211

|(% 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 PS-LB is in Deep Sleep Mode.

212

213

== 1.9 Pin Mapping ==

214

215

216

[[image:1675072568006-274.png]]

217

218

219

== 1.10 BLE connection ==

220

221

222

PS-LB support BLE remote configure.

223

224

225

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:

226

227

* Press button to send an uplink

228

* Press button to active device.

229

* Device Power on or reset.

230

231

If there is no activity connection on BLE in 60 seconds, sensor will shut down BLE module to enter low power mode.

232

233

234

== 1.11 Mechanical ==

235

236

237

[[image:1675143884058-338.png]]

238

239

240

[[image:1675143899218-599.png]]

241

242

243

[[image:1675143909447-639.png]]

244

245

246

= 2. Configure PS-LB to connect to LoRaWAN network =

247

248

== 2.1 How it works ==

249

250

251

The PS-LB is configured as (% style="color:#037691" %)**LoRaWAN OTAA Class A**(%%) mode by default. It has OTAA keys to join LoRaWAN network. To connect a local LoRaWAN network, you need to input the OTAA keys in the LoRaWAN IoT server and activate the PS-LB. It will automatically join the network via OTAA and start to send the sensor value. The default uplink interval is 20 minutes.

252

253

254

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

255

256

257

Following is an example for how to join the [[TTN v3 LoRaWAN Network>>url:https://console.cloud.thethings.network/]]. Below is the network structure; we use the [[LPS8v2>>url:https://www.dragino.com/products/lora-lorawan-gateway/item/228-lps8v2.html]] as a LoRaWAN gateway in this example.

258

259

260

[[image:1675144005218-297.png]]

261

262

263

The LPS8V2 is already set to connected to [[TTN network >>url:https://console.cloud.thethings.network/]], so what we need to now is configure the TTN server.

264

265

266

(% style="color:blue" %)**Step 1:**(%%) Create a device in TTN with the OTAA keys from PS-LB.

267

268

Each PS-LB is shipped with a sticker with the default device EUI as below:

269

270

[[image:image-20230131134744-2.jpeg]]

You can enter this key in the LoRaWAN Server portal. Below is TTN screen shot:

275

276

277

(% style="color:blue" %)**Register the device**

278

279

[[image:1675144099263-405.png]]

280

281

282

(% style="color:blue" %)**Add APP EUI and DEV EUI**

283

284

[[image:1675144117571-832.png]]

285

286

287

(% style="color:blue" %)**Add APP EUI in the application**

288

289

290

[[image:1675144143021-195.png]]

291

292

293

(% style="color:blue" %)**Add APP KEY**

294

295

[[image:1675144157838-392.png]]

296

297

(% style="color:blue" %)**Step 2:**(%%) Activate on PS-LB

298

299

300

Press the button for 5 seconds to activate the PS-LB.

301

302

(% style="color:green" %)**Green led**(%%) will fast blink 5 times, device will enter (% style="color:blue" %)**OTA mode**(%%) for 3 seconds. And then start to JOIN LoRaWAN network. (% style="color:green" %)**Green led**(%%) will solidly turn on for 5 seconds after joined in network.

303

304

After join success, it will start to upload messages to TTN and you can see the messages in the panel.

305

306

307

== 2.3 Uplink Payload ==

308

309

=== 2.3.1 Device Status, FPORT~=5 ===

310

311

312

Include device configure status. Once PS-LB Joined the network, it will uplink this message to the server.

313

314

Users can also use the downlink command(0x26 01) to ask PS-LB to resend this uplink.

315

316

317

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

318

|(% colspan="6" %)**Device Status (FPORT=5)**

Example parse in TTNv3

323

324

[[image:1675144504430-490.png]]

325

326

327

(% style="color:#037691" %)**Sensor Model**(%%): For PS-LB, this value is 0x16

328

329

(% style="color:#037691" %)**Firmware Version**(%%): 0x0100, Means: v1.0.0 version

330

331

(% style="color:#037691" %)**Frequency Band**:

*0x01: EU868

*0x02: US915

*0x03: IN865

*0x04: AU915

*0x05: KZ865

*0x06: RU864

*0x07: AS923

*0x08: AS923-1

*0x09: AS923-2

*0x0a: AS923-3

*0x0b: CN470

*0x0c: EU433

*0x0d: KR920

*0x0e: MA869

(% style="color:#037691" %)**Sub-Band**:

363

364

AU915 and US915:value 0x00 ~~ 0x08

365

366

CN470: value 0x0B ~~ 0x0C

367

368

Other Bands: Always 0x00

369

370

371

(% style="color:#037691" %)**Battery Info**:

372

373

Check the battery voltage.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

=== 2.3.2 Sensor value, FPORT~=2 ===

381

382

383

Uplink payload includes in total 9 bytes.

384

385

386

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

387

|(% style="width:97px" %)(((

388

**Size(bytes)**

389

390

|(% style="width:97px" %)Value|(% style="width:48px" %)[[BAT>>||anchor="H2.3.4BatteryInfo"]]|(% style="width:71px" %)[[Probe Model>>||anchor="H2.3.5ProbeModel"]]|(% style="width:98px" %)[[0 ~~~~ 20mA value>>||anchor="H2.3.607E20mAvalue28IDC_IN29"]]|(% style="width:73px" %)[[0 ~~~~ 30v value>>||anchor="H2.3.707E30Vvalue28pinVDC_IN29"]]|(% style="width:122px" %)[[IN1 &IN2 Interrupt flag>>||anchor="H2.3.8IN126IN226INTpin"]]

391

392

[[image:1675144608950-310.png]]

393

394

395

=== 2.3.3 Battery Info ===

396

397

398

Check the battery voltage for PS-LB.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

=== 2.3.4 Probe Model ===

406

407

408

PS-LB has different kind of probe, 4~~20mA represent the full scale of the measuring range. So a 12mA output means different meaning for different probe.

For example.

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

414

|**Part Number**|**Probe Used**|**4~~20mA scale**|**Example: 12mA meaning**

415

|PS-LB-I3|immersion type with 3 meters cable|0~~3 meters|1.5 meters pure water

416

|PS-LB-I5|immersion type with 5 meters cable|0~~5 meters|2.5 meters pure water

417

|PS-LB-T20-B|T20 threaded probe|0~~1MPa|0.5MPa air / gas or water pressure

418

419

The probe model field provides the convenient for server to identical how it should parse the 4~~20mA sensor value and get the correct value.

420

421

422

=== 2.3.5 0~~20mA value (IDC_IN) ===

423

424

425

The output value from **Pressure Probe**, use together with Probe Model to get the pressure value or water level.

426

427

(% style="color:#037691" %)**Example**:

428

429

27AE(H) = 10158 (D)/1000 = 10.158mA.

430

431

432

Instead of pressure probe, User can also connect a general 4~~20mA in this port to support different types of 4~~20mA sensors. below is the connection example:

433

434

[[image:image-20230225154759-1.png||height="408" width="741"]]

435

436

437

=== 2.3.6 0~~30V value ( pin VDC_IN) ===

438

439

440

Measure the voltage value. The range is 0 to 30V.

441

442

(% style="color:#037691" %)**Example**:

443

444

138E(H) = 5006(D)/1000= 5.006V

445

446

447

=== 2.3.7 IN1&IN2&INT pin ===

448

449

450

IN1 and IN2 are used as digital input pins.

451

452

(% style="color:#037691" %)**Example**:

453

454

09 (H): (0x09&0x08)>>3=1 IN1 pin is high level.

455

456

09 (H): (0x09&0x04)>>2=0 IN2 pin is low level.

457

458

459

This data field shows if this packet is generated by (% style="color:blue" %)**Interrupt Pin** (%%)or not. [[Click here>>||anchor="H3.2SetInterruptMode"]] for the hardware and software set up. Note: The Internet Pin is a separate pin in the screw terminal.

460

461

(% style="color:#037691" %)**Example:**

462

463

09 (H): (0x09&0x02)>>1=1 The level of the interrupt pin.

464

465

09 (H): 0x09&0x01=1 0x00: Normal uplink packet.

466

467

0x01: Interrupt Uplink Packet.

468

469

=== (% id="cke_bm_109176S" style="display:none" %) (%%)2.3.8 Sensor value, FPORT~=7 ===

470

471

472

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:508.222px" %)

473

|(% style="width:94px" %)(((

474

**Size(bytes)**

475

)))|(% style="width:43px" %)2|(% style="width:367px" %)n

476

|(% style="width:94px" %)**Value**|(% style="width:43px" %)[[BAT>>||anchor="H2.3.4BatteryInfo"]]|(% style="width:367px" %)(((

477

Voltage value, each 2 bytes is a set of voltage values.

478

)))

479

480

[[image:image-20230220171300-1.png||height="207" width="863"]]

481

482

Multiple sets of data collected are displayed in this form：

483

484

[voltage value1], [voltage value2], [voltage value3],…[voltage value n/2]

485

486

487

=== 2.3.9 Decode payload in The Things Network ===

488

489

490

While using TTN network, you can add the payload format to decode the payload.

491

492

493

[[image:1675144839454-913.png]]

494

495

496

PS-LB TTN Payload Decoder: [[https:~~/~~/github.com/dragino/dragino-end-node-decoder>>url:https://github.com/dragino/dragino-end-node-decoder]]

497

498

499

== 2.4 Uplink Interval ==

500

501

502

The PS-LB by default uplink the sensor data every 20 minutes. User can change this interval by AT Command or LoRaWAN Downlink Command. See this link: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.1ChangeUplinkInterval>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/#H4.1ChangeUplinkInterval||style="background-color: rgb(255, 255, 255);"]]

503

504

505

== 2.5 Show Data in DataCake IoT Server ==

506

507

508

[[DATACAKE>>url:https://datacake.co/]] provides a human friendly interface to show the sensor data, once we have data in TTN, we can use [[DATACAKE>>url:https://datacake.co/]] to connect to TTN and see the data in DATACAKE. Below are the steps:

509

510

511

(% style="color:blue" %)**Step 1: **(%%)Be sure that your device is programmed and properly connected to the network at this time.

512

513

(% style="color:blue" %)**Step 2:**(%%) To configure the Application to forward data to DATACAKE you will need to add integration. To add the DATACAKE integration, perform the following steps:

514

515

516

[[image:1675144951092-237.png]]

517

518

519

[[image:1675144960452-126.png]]

520

521

522

(% style="color:blue" %)**Step 3:**(%%) Create an account or log in Datacake.

523

524

(% style="color:blue" %)**Step 4:** (%%)Create PS-LB product.

525

526

[[image:1675145004465-869.png]]

527

528

529

[[image:1675145018212-853.png]]

[[image:1675145029119-717.png]]

535

536

537

(% style="color:blue" %)**Step 5: **(%%)add payload decode

538

539

[[image:1675145051360-659.png]]

540

541

542

[[image:1675145060812-420.png]]

543

544

545

After added, the sensor data arrive TTN, it will also arrive and show in Datacake.

546

547

548

[[image:1675145081239-376.png]]

549

550

551

== 2.6 Frequency Plans ==

552

553

554

The PS-LB uses OTAA mode and below frequency plans by default. If user want to use it with different frequency plan, please refer the AT command sets.

555

556

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20Frequency%20Band/]]

557

558

559

== 2.7 Firmware Change Log ==

560

561

562

**Firmware download link:**

563

564

[[https:~~/~~/www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0>>url:https://www.dropbox.com/sh/gf1glloczbzz19h/AABbuYI4WY6VdAmpXo6o1V2Ka?dl=0]]

565

566

567

= 3. Configure PS-LB via AT Command or LoRaWAN Downlink =

568

569

570

Use can configure PS-LB via AT Command or LoRaWAN Downlink.

571

572

* AT Command Connection: See [[FAQ>>||anchor="H7.FAQ"]].

573

* LoRaWAN Downlink instruction for different platforms: See [[IoT LoRaWAN Server>>http://wiki.dragino.com/xwiki/bin/view/Main/]] section.

574

575

There are two kinds of commands to configure PS-LB, they are:

576

577

* (% style="color:#037691" %)**General Commands**

578

579

These commands are to configure:

580

581

* General system settings like: uplink interval.

582

* LoRaWAN protocol & radio related command.

583

584

They are same for all Dragino Device which support DLWS-005 LoRaWAN Stack. These commands can be found on the wiki:

585

586

[[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/>>http://wiki.dragino.com/xwiki/bin/view/Main/End%20Device%20AT%20Commands%20and%20Downlink%20Command/]]

587

588

589

* (% style="color:#037691" %)**Commands special design for PS-LB**

590

591

These commands only valid for PS-LB, as below:

592

593

594

== 3.1 Set Transmit Interval Time ==

595

596

597

Feature: Change LoRaWAN End Node Transmit Interval.

598

599

(% style="color:blue" %)**AT Command: AT+TDC**

600

601

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

602

|=(% style="width: 156px;" %)**Command Example**|=(% style="width: 137px;" %)**Function**|=**Response**

603

|(% style="width:156px" %)AT+TDC=?|(% style="width:137px" %)Show current transmit Interval|(((

604

30000

605

OK

606

the interval is 30000ms = 30s

607

)))

608

|(% style="width:156px" %)AT+TDC=60000|(% style="width:137px" %)Set Transmit Interval|(((

609

OK

610

Set transmit interval to 60000ms = 60 seconds

611

)))

612

613

(% style="color:blue" %)**Downlink Command: 0x01**

614

615

Format: Command Code (0x01) followed by 3 bytes time value.

616

617

If the downlink payload=0100003C, it means set the END Node's Transmit Interval to 0x00003C=60(S), while type code is 01.

618

619

* Example 1: Downlink Payload: 0100001E ~/~/ Set Transmit Interval (TDC) = 30 seconds

620

* Example 2: Downlink Payload: 0100003C ~/~/ Set Transmit Interval (TDC) = 60 seconds

621

622

== 3.2 Set Interrupt Mode ==

623

624

625

Feature, Set Interrupt mode for GPIO_EXIT.

626

627

(% style="color:blue" %)**AT Command: AT+INTMOD**

628

629

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

630

|=(% style="width: 154px;" %)**Command Example**|=(% style="width: 196px;" %)**Function**|=(% style="width: 157px;" %)**Response**

631

|(% style="width:154px" %)AT+INTMOD=?|(% style="width:196px" %)Show current interrupt mode|(% style="width:157px" %)(((

632

0

633

OK

634

the mode is 0 =Disable Interrupt

635

)))

636

|(% style="width:154px" %)AT+INTMOD=2|(% style="width:196px" %)(((

637

Set Transmit Interval

638

0. (Disable Interrupt),

639

~1. (Trigger by rising and falling edge)

640

2. (Trigger by falling edge)

641

3. (Trigger by rising edge)

642

)))|(% style="width:157px" %)OK

643

644

(% style="color:blue" %)**Downlink Command: 0x06**

645

646

Format: Command Code (0x06) followed by 3 bytes.

647

648

This means that the interrupt mode of the end node is set to 0x000003=3 (rising edge trigger), and the type code is 06.

649

650

* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode

651

* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger

652

653

== 3.3 Set the output time ==

654

655

656

Feature, Control the output 3V3 , 5V or 12V.

657

658

(% style="color:blue" %)**AT Command: AT+3V3T**

659

660

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:474px" %)

661

|=(% style="width: 154px;" %)**Command Example**|=(% style="width: 201px;" %)**Function**|=(% style="width: 116px;" %)**Response**

662

|(% style="width:154px" %)AT+3V3T=?|(% style="width:201px" %)Show 3V3 open time.|(% style="width:116px" %)(((

0

OK

)))

|(% style="width:154px" %)AT+3V3T=0|(% style="width:201px" %)Normally open 3V3 power supply.|(% style="width:116px" %)(((

OK

default setting

)))

|(% style="width:154px" %)AT+3V3T=1000|(% style="width:201px" %)Close after a delay of 1000 milliseconds.|(% style="width:116px" %)(((

671

OK

672

)))

673

|(% style="width:154px" %)AT+3V3T=65535|(% style="width:201px" %)Normally closed 3V3 power supply.|(% style="width:116px" %)(((

OK

)))

(% style="color:blue" %)**AT Command: AT+5VT**

678

679

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:470px" %)

680

|=(% style="width: 155px;" %)**Command Example**|=(% style="width: 196px;" %)**Function**|=(% style="width: 114px;" %)**Response**

681

|(% style="width:155px" %)AT+5VT=?|(% style="width:196px" %)Show 5V open time.|(% style="width:114px" %)(((

0

OK

)))

|(% style="width:155px" %)AT+5VT=0|(% style="width:196px" %)Normally closed 5V power supply.|(% style="width:114px" %)(((

OK

default setting

)))

|(% style="width:155px" %)AT+5VT=1000|(% style="width:196px" %)Close after a delay of 1000 milliseconds.|(% style="width:114px" %)(((

690

OK

691

)))

692

|(% style="width:155px" %)AT+5VT=65535|(% style="width:196px" %)Normally open 5V power supply.|(% style="width:114px" %)(((

OK

)))

(% style="color:blue" %)**AT Command: AT+12VT**

697

698

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:443px" %)

699

|=(% style="width: 156px;" %)**Command Example**|=(% style="width: 199px;" %)**Function**|=(% style="width: 83px;" %)**Response**

700

|(% style="width:156px" %)AT+12VT=?|(% style="width:199px" %)Show 12V open time.|(% style="width:83px" %)(((

0

OK

)))

|(% style="width:156px" %)AT+12VT=0|(% style="width:199px" %)Normally closed 12V power supply.|(% style="width:83px" %)OK

705

|(% style="width:156px" %)AT+12VT=500|(% style="width:199px" %)Close after a delay of 500 milliseconds.|(% style="width:83px" %)(((

OK

)))

(% style="color:blue" %)**Downlink Command: 0x07**

710

711

Format: Command Code (0x07) followed by 3 bytes.

712

713

The first byte is which power, the second and third bytes are the time to turn on.

714

715

* Example 1: Downlink Payload: 070101F4 **~-~-->** AT+3V3T=500

716

* Example 2: Downlink Payload: 0701FFFF **~-~-->** AT+3V3T=65535

717

* Example 3: Downlink Payload: 070203E8 **~-~-->** AT+5VT=1000

718

* Example 4: Downlink Payload: 07020000 **~-~-->** AT+5VT=0

719

* Example 5: Downlink Payload: 070301F4 **~-~-->** AT+12VT=500

720

* Example 6: Downlink Payload: 07030000 **~-~-->** AT+12VT=0

721

722

== 3.4 Set the Probe Model ==

723

724

725

Users need to configure this parameter according to the type of external probe. In this way, the server can decode according to this value, and convert the current value output by the sensor into water depth or pressure value.

726

727

**AT Command: AT** **+PROBE**

AT+PROBE=aabb

When aa=00, it is the water depth mode, and the current is converted into the water depth value; bb is the probe at a depth of several meters.

732

733

When aa=01, it is the pressure mode, which converts the current into a pressure value;

734

735

bb represents which type of pressure sensor it is.

736

737

(A->01,B->02,C->03,D->04,E->05,F->06,G->07,H->08,I->09,J->0A,K->0B,L->0C)

738

739

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

740

|**Command Example**|**Function**|**Response**

741

|AT +PROBE =?|Get or Set the probe model.|0

742

OK

743

|AT +PROBE =0003|Set water depth sensor mode, 3m type.|OK

|(((

AT +PROBE =000A

)))|Set water depth sensor mode, 10m type.|OK

749

|AT +PROBE =0101|Set pressure transmitters mode, first type(A).|OK

750

|AT +PROBE =0000|Initial state, no settings.|OK

751

752

**Downlink Command: 0x08**

753

754

Format: Command Code (0x08) followed by 2 bytes.

755

756

* Example 1: Downlink Payload: 080003 **~-~-->** AT+PROBE=0003

757

* Example 2: Downlink Payload: 080101 **~-~-->** AT+PROBE=0101

758

759

== 3.5 Multiple collections are one uplink（Since firmware V1.1） ==

760

761

762

Added AT+STDC command to collect the voltage of VDC_INPUT multiple times and upload it at one time.

763

764

(% style="color:blue" %)**AT Command: AT** **+STDC**

AT+STDC=aa,bb,bb

(% style="color:#037691" %)**aa:**(%%)

769

**0:** means disable this function and use TDC to send packets.

770

**1:** means enable this function, use the method of multiple acquisitions to send packets.

771

(% style="color:#037691" %)**bb:**(%%) Each collection interval (s), the value is 1~~65535

772

(% style="color:#037691" %)**cc:**(%%)** **the number of collection times, the value is 1~~120

773

774

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:510px" %)

775

|**Command Example**|**Function**|**Response**

776

|AT+STDC=?|Get the mode of multiple acquisitions and one uplink.|1,10,18

777

OK

778

|AT+STDC=1,10,18|Set the mode of multiple acquisitions and one uplink, collect once every 10 seconds, and report after 18 times.|(((

779

Attention:Take effect after ATZ

OK

)))

|AT+STDC=0, 0,0|(((

Use the TDC interval to send packets.(default)

)))|(((

Attention:Take effect after ATZ

OK

)))

(% style="color:blue" %)**Downlink Command: 0xAE**

794

795

Format: Command Code (0x08) followed by 5 bytes.

796

797

* Example 1: Downlink Payload: AE 01 02 58 12** ~-~-->** AT+STDC=1,600,18

798

799

= 4. Battery & how to replace =

800

801

== 4.1 Battery Type ==

802

803

804

PS-LB is equipped with a [[8500mAH ER26500 Li-SOCI2 battery>>https://www.dropbox.com/sh/w9l2oa3ytpculph/AAAPtt-apH4lYfCj-2Y6lHvQa?dl=0]]. The battery is un-rechargeable battery with low discharge rate targeting for 8~~10 years use. This type of battery is commonly used in IoT target for long-term running, such as water meter.

805

806

The discharge curve is not linear so can’t simply use percentage to show the battery level. Below is the battery performance.

807

808

[[image:1675146710956-626.png]]

809

810

811

Minimum Working Voltage for the PS-LB:

PS-LB: 2.45v ~~ 3.6v

== 4.2 Replace Battery ==

817

818

819

Any battery with range 2.45 ~~ 3.6v can be a replacement. We recommend to use Li-SOCl2 Battery.

820

821

And make sure the positive and negative pins match.

822

823

824

== 4.3 Power Consumption Analyze ==

825

826

827

Dragino Battery powered product are all runs in Low Power mode. We have an update battery calculator which base on the measurement of the real device. User can use this calculator to check the battery life and calculate the battery life if want to use different transmit interval.

828

829

Instruction to use as below:

830

831

(% style="color:blue" %)**Step 1:**(%%) Downlink the up-to-date DRAGINO_Battery_Life_Prediction_Table.xlsx from: [[https:~~/~~/www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0>>https://www.dropbox.com/sh/zwex6i331j5oeq2/AACIMf9f_v2qsJ39CuMQ5Py_a?dl=0]]

832

833

(% style="color:blue" %)**Step 2:**(%%) Open it and choose

* Product Model

* Uplink Interval

* Working Mode

And the Life expectation in difference case will be shown on the right.

840

841

[[image:1675146895108-304.png]]

842

843

844

The battery related documents as below:

845

846

* [[Battery Dimension>>https://www.dropbox.com/s/ox5g9njwjle7aw3/LSN50-Battery-Dimension.pdf?dl=0]],

847

* [[Lithium-Thionyl Chloride Battery datasheet, Tech Spec>>https://www.dropbox.com/sh/d4oyfnp8o94180o/AABQewCNSh5GPeQH86UxRgQQa?dl=0]]

848

* [[Lithium-ion Battery-Capacitor datasheet>>https://www.dropbox.com/s/791gjes2lcbfi1p/SPC_1520_datasheet.jpg?dl=0]], [[Tech Spec>>https://www.dropbox.com/s/4pkepr9qqqvtzf2/SPC1520%20Technical%20Specification20171123.pdf?dl=0]]

849

850

[[image:image-20230131145708-3.png]]

851

852

853

=== 4.3.1 Battery Note ===

854

855

856

The Li-SICO battery is designed for small current / long period application. It is not good to use a high current, short period transmit method. The recommended minimum period for use of this battery is 5 minutes. If you use a shorter period time to transmit LoRa, then the battery life may be decreased.

857

858

859

=== 4.3.2 Replace the battery ===

860

861

862

You can change the battery in the PS-LB.The type of battery is not limited as long as the output is between 3v to 3.6v. On the main board, there is a diode (D1) between the battery and the main circuit. If you need to use a battery with less than 3.3v, please remove the D1 and shortcut the two pads of it so there won't be voltage drop between battery and main board.

863

864

The default battery pack of PS-LB includes a ER26500 plus super capacitor. If user can't find this pack locally, they can find ER26500 or equivalence, which will also work in most case. The SPC can enlarge the battery life for high frequency use (update period below 5 minutes)

865

866

867

= 5. Remote Configure device =

868

869

== 5.1 Connect via BLE ==

870

871

872

Please see this instruction for how to configure via BLE: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/BLE%20Bluetooth%20Remote%20Configure/]]

873

874

875

== 5.2 AT Command Set ==

= 6. OTA firmware update =

880

881

882

Please see this link for how to do OTA firmware update: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/>>url:http://wiki.dragino.com/xwiki/bin/view/Main/Firmware%20OTA%20Update%20for%20Sensors/]]

= 7. FAQ =

== 7.1 How to use AT Command to access device? ==

888

889

890

See: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]

891

892

893

== 7.2 How to update firmware via UART port? ==

894

895

896

See: [[http:~~/~~/wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware>>url:http://wiki.dragino.com/xwiki/bin/view/Main/UART%20Access%20for%20LoRa%20ST%20v4%20base%20model/#H1.LoRaSTv4baseHardware]]

897

898

899

== 7.3 How to change the LoRa Frequency Bands/Region? ==

900

901

902

You can follow the instructions for [[how to upgrade image>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]].

903

When downloading the images, choose the required image file for download.

= 8. Order Info =

[[image:image-20230131153105-4.png]]

= 9. Packing Info =

(% style="color:#037691" %)**Package Includes**:

916

917

* PS-LB LoRaWAN Pressure Sensor

918

919

(% style="color:#037691" %)**Dimension and weight**:

* Device Size: cm

* Device Weight: g

* Package Size / pcs : cm

* Weight / pcs : g

= 10. Support =

* 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.

930

931

* 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.com>>url:http://../../../../../../D:%5C%E5%B8%82%E5%9C%BA%E8%B5%84%E6%96%99%5C%E8%AF%B4%E6%98%8E%E4%B9%A6%5CLoRa%5CLT%E7%B3%BB%E5%88%97%5Csupport@dragino.com]]

932

933

Wiki source code of PS-LB -- LoRaWAN Air Water Pressure Sensor User Manual

Applications

Navigation