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

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

110

== 1.4 Probe Types ==

111

112

=== 1.4.1 Thread Installation Type ===

113

114

115

[[image:1675071448299-229.png]]

116

117

* Hersman Pressure Transmitter

118

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

119

* Accuracy: 0.2% F.S

120

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

121

* Overload 200% F.S

122

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

123

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

124

* Storage temperature: -30℃~~80℃

125

* Operating temperature: -20℃~~60℃

126

* Connector Type: Various Types, see order info

127

128

129

=== 1.4.2 Immersion Type ===

130

131

132

[[image:1675071521308-426.png]]

133

134

* Immersion Type, Probe IP Level: IP68

135

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

136

* Accuracy: 0.2% F.S

137

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

138

* Overload 200% F.S

139

* Zero Temperature Drift: ±2% F.S)

140

* FS Temperature Drift: ±2% F.S

141

* Storage temperature: -30℃~~80℃

142

* Operating temperature: -40℃~~85℃

143

* Material: 316 stainless steels

144

145

146

== 1.5 Probe Dimension ==

== 1.6 Application and Installation ==

151

152

=== 1.6.1 Thread Installation Type ===

153

154

155

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

156

157

* Hydraulic Pressure

158

* Petrochemical Industry

159

* Health and Medical

160

* Food & Beverage Processing

161

* Auto-controlling house

162

* Constant Pressure Water Supply

163

* Liquid Pressure measuring

164

165

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

166

167

[[image:1675071670469-145.png]]

168

169

170

=== 1.6.2 Immersion Type ===

171

172

173

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

174

175

Liquid & Water Pressure / Level detect.

176

177

[[image:1675071725288-579.png]]

178

179

180

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.

181

182

183

[[image:1675071736646-450.png]]

184

185

186

[[image:1675071776102-240.png]]

187

188

189

== 1.7 Sleep mode and working mode ==

190

191

192

(% 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.

193

194

(% 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.

195

196

197

== 1.8 Button & LEDs ==

198

199

200

[[image:1675071855856-879.png]]

201

202

203

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

204

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

205

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

206

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

207

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

208

)))

209

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

210

(% 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.

211

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

212

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.

213

)))

214

|(% 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.

215

216

217

== 1.9 Pin Mapping ==

218

219

220

[[image:1675072568006-274.png]]

221

222

223

== 1.10 BLE connection ==

224

225

226

PS-LB support BLE remote configure.

227

228

229

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:

230

231

* Press button to send an uplink

232

* Press button to active device.

233

* Device Power on or reset.

234

235

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

236

237

238

== 1.11 Mechanical ==

239

240

241

[[image:1675143884058-338.png]]

242

243

244

[[image:1675143899218-599.png]]

245

246

247

[[image:1675143909447-639.png]]

248

249

250

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

251

252

== 2.1 How it works ==

253

254

255

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.

256

257

258

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

259

260

261

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.

262

263

264

[[image:1675144005218-297.png]]

265

266

267

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.

268

269

270

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

271

272

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

273

274

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

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

279

280

281

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

282

283

[[image:1675144099263-405.png]]

284

285

286

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

287

288

[[image:1675144117571-832.png]]

289

290

291

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

292

293

294

[[image:1675144143021-195.png]]

295

296

297

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

298

299

[[image:1675144157838-392.png]]

300

301

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

302

303

304

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

305

306

(% 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.

307

308

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

== 2.3 Uplink Payload ==

313

314

315

Uplink payloads have two types:

316

317

* Distance Value: Use FPORT=2

318

* Other control commands: Use other FPORT fields.

319

320

The application server should parse the correct value based on FPORT settings.

321

322

323

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

324

325

326

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

327

328

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

329

330

331

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

332

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

Example parse in TTNv3

337

338

[[image:1675144504430-490.png]]

339

340

341

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

342

343

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

344

345

(% 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**:

377

378

AU915 and US915:value 0x00 ~~ 0x08

379

380

CN470: value 0x0B ~~ 0x0C

381

382

Other Bands: Always 0x00

383

384

385

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

386

387

Check the battery voltage.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

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

395

396

397

Uplink payload includes in total 9 bytes.

398

399

400

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

401

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

402

**Size(bytes)**

403

404

|(% style="width:97px" %)Value|(% style="width:48px" %)[[BAT>>||anchor="H2.3.3BatteryInfo"]]|(% style="width:71px" %)[[Probe Model>>||anchor="H2.3.4ProbeModel"]]|(% style="width:98px" %)[[0 ~~~~ 20mA value>>||anchor="H2.3.507E20mAvalue28IDC_IN29"]]|(% style="width:73px" %)[[0 ~~~~ 30v value>>||anchor="H2.3.607E30Vvalue28pinVDC_IN29"]]|(% style="width:122px" %)[[IN1 &IN2 Interrupt flag>>||anchor="H2.3.7IN126IN226INTpin"]]

405

406

[[image:1675144608950-310.png]]

407

408

409

(% class="wikigeneratedid" %)

410

=== 2.3.3 Sensor value, FPORT~=7 ===

411

412

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:543px" %)

413

|(% style="width:99px" %)(((

414

**Size(bytes)**

415

)))|(% style="width:63px" %)2|(% style="width:378px" %)n

416

|(% style="width:99px" %)Value|(% style="width:63px" %)[[BAT>>||anchor="H2.3.3BatteryInfo"]]|(% style="width:378px" %)(((

417

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

)))

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

422

423

424

=== 2.3.3 Battery Info ===

425

426

427

Check the battery voltage for PS-LB.

Ex1: 0x0B45 = 2885mV

Ex2: 0x0B49 = 2889mV

=== 2.3.4 Probe Model ===

436

437

438

PS-LB has different kind of probe, 0~~20mA represent the full scale of the measuring range. So a 15mA output means different meaning for different probe.

For example.

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

444

|(% style="width:111px" %)**Part Number**|(% style="width:158px" %)**Probe Used**|**0~~20mA scale**|**Example: 10mA meaning**

445

|(% style="width:111px" %)PS-LB-I3|(% style="width:158px" %)immersion type with 3 meters cable|0~~3 meters|1.5 meters pure water

446

|(% style="width:111px" %)PS-LB-I5|(% style="width:158px" %)immersion type with 5 meters cable|0~~5 meters|2.5 meters pure water

447

448

The probe model field provides the convenient for server to identical how it should parse the 0~~20mA sensor value and get the correct value.

449

450

451

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

452

453

454

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

455

456

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

457

458

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

459

460

461

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

462

463

464

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

465

466

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

467

468

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

469

470

471

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

472

473

474

IN1 and IN2 are used as digital input pins.

475

476

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

477

478

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

479

480

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

481

482

483

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.

484

485

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

486

487

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

488

489

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

490

491

0x01: Interrupt Uplink Packet.

492

493

494

=== 2.3.8 Decode payload in The Things Network ===

495

496

497

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

498

499

500

[[image:1675144839454-913.png]]

501

502

503

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

504

505

506

== 2.4 Uplink Interval ==

507

508

509

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);"]]

510

511

512

== 2.5 Show Data in DataCake IoT Server ==

513

514

515

[[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:

516

517

518

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

519

520

(% 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:

521

522

523

[[image:1675144951092-237.png]]

524

525

526

[[image:1675144960452-126.png]]

527

528

529

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

530

531

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

532

533

[[image:1675145004465-869.png]]

534

535

536

[[image:1675145018212-853.png]]

[[image:1675145029119-717.png]]

542

543

544

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

545

546

[[image:1675145051360-659.png]]

547

548

549

[[image:1675145060812-420.png]]

550

551

552

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

553

554

555

[[image:1675145081239-376.png]]

556

557

558

== 2.6 Frequency Plans ==

559

560

561

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.

562

563

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

564

565

566

== 2.7 Firmware Change Log ==

567

568

569

**Firmware download link:**

570

571

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

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

576

577

578

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

579

580

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

581

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

582

583

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

584

585

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

586

587

These commands are to configure:

588

589

* General system settings like: uplink interval.

590

* LoRaWAN protocol & radio related command.

591

592

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

593

594

[[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/]]

595

596

597

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

598

599

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

600

601

602

== 3.1 Set Transmit Interval Time ==

603

604

605

Feature: Change LoRaWAN End Node Transmit Interval.

606

607

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

608

609

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

610

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

611

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

612

30000

613

OK

614

the interval is 30000ms = 30s

615

)))

616

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

617

OK

618

Set transmit interval to 60000ms = 60 seconds

619

)))

620

621

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

622

623

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

624

625

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

626

627

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

628

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

629

630

631

== 3.2 Set Interrupt Mode ==

632

633

634

Feature, Set Interrupt mode for GPIO_EXIT.

635

636

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

637

638

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

639

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

640

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

641

0

642

OK

643

the mode is 0 = No interruption

644

)))

645

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

646

Set Transmit Interval

647

~1. (Disable Interrupt),

648

2. (Trigger by rising and falling edge)

649

3. (Trigger by falling edge)

650

4. (Trigger by rising edge)

651

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

652

653

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

654

655

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

656

657

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

658

659

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

660

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

661

662

663

== 3.3 Set the output time ==

664

665

666

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

667

668

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

669

670

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

671

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

672

|(% 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" %)(((

681

OK

682

)))

683

|(% 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**

688

689

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

690

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

691

|(% 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" %)(((

700

OK

701

)))

702

|(% 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**

707

708

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

709

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

710

|(% 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

715

|(% 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**

720

721

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

722

723

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

724

725

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

726

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

727

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

728

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

729

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

730

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

731

732

733

== 3.4 Set the Probe Model ==

734

735

736

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

737

738

(% border="1" cellspacing="4" style="background-color:#f7faff; color:black; width:448px" %)

739

|=(% style="width: 154px;" %)**Command Example**|=(% style="width: 204px;" %)**Function**|=(% style="width: 85px;" %)**Response**

740

|(% style="width:154px" %)AT +PROBE =?|(% style="width:204px" %)Get or Set the probe model.|(% style="width:85px" %)(((

0

OK

)))

|(% style="width:154px" %)AT +PROBE =0003|(% style="width:204px" %)Set water depth sensor mode, 3m type.|(% style="width:85px" %)OK

745

|(% style="width:154px" %)AT +PROBE =0101|(% style="width:204px" %)Set pressure transmitters mode, first type.|(% style="width:85px" %)(((

746

OK

747

)))

748

|(% style="width:154px" %)AT +PROBE =0000|(% style="width:204px" %)Initial state, no settings.|(% style="width:85px" %)(((

OK

)))

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

760

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

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**

765

766

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

767

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

768

|(% style="width:156px" %)AT+STDC=?|(% style="width:137px" %)(((

769

Get the mode of multiple acquisitions and one uplink

)))|(((

1,10,18

OK

)))

|(% style="width:156px" %)AT+STDC=1,10,18|(% style="width:137px" %)Set the mode of multiple acquisitions and one uplink|(((

OK

aa:

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

780

781

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

782

783

bb: Each collection interval (s), the value is 1~~65535

784

785

cc: the number of collection times, the value is 1~~120

786

)))

787

788

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

789

790

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

791

792

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

793

794

= 4. Battery & how to replace =

795

796

== 4.1 Battery Type ==

797

798

799

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.

800

801

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

802

803

[[image:1675146710956-626.png]]

804

805

806

Minimum Working Voltage for the PS-LB:

PS-LB: 2.45v ~~ 3.6v

== 4.2 Replace Battery ==

812

813

814

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

815

816

And make sure the positive and negative pins match.

817

818

819

== 4.3 Power Consumption Analyze ==

820

821

822

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.

823

824

Instruction to use as below:

825

826

(% 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]]

827

828

(% 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.

835

836

[[image:1675146895108-304.png]]

837

838

839

The battery related documents as below:

840

841

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

842

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

843

* [[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]]

844

845

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

846

847

848

=== 4.3.1 Battery Note ===

849

850

851

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.

852

853

854

=== 4.3.2 Replace the battery ===

855

856

857

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.

858

859

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)

860

861

862

= 5. Remote Configure device =

863

864

== 5.1 Connect via BLE ==

865

866

867

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/]]

868

869

870

== 5.2 AT Command Set ==

= 6. OTA firmware update =

875

876

877

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? ==

883

884

885

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]]

886

887

888

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

889

890

891

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]]

892

893

894

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

895

896

897

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

898

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**:

911

912

* PS-LB LoRaWAN Pressure Sensor

913

914

(% 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.

926

927

* 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]]

928

929

930

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

Applications

Navigation