netvox R718X Wireless Ultrasonic Distance Sensor with Temperature Sensor User Manual

Wireless Ultrasonic Distance Sensor with Temperature Sensor
Wireless Ultrasonic Distance Sensor
with Temperature Sensor
R718X
User Manual

Copyright© Netvox Technology Co., Ltd.
This document contains proprietary technical information which is the property of NETVOX Technology. It shall be maintained in strict confidence and shall not be disclosed to other parties, in whole or in part, without written permission of NETVOX
Technology. The specifications are subject to change without prior notice.

Introduction

The R718X is a LoRaWAN Class A device and it is compatible with LoRaWAN protocol. R718X has a built-in ultrasonic ranging sensor that can detect the distance from the sensor to the detected object (for example: detect the height of garbage in the waste bin). R718X also has the temperature detection function, it can detect the temperature of the waste bin. R718X would send out the detected data through wireless network.

LoRa Wireless Technology:

LoRa is a wireless communication technology famous for its long-distance transmission and low power consumption. Compared with other communication methods, LoRa spread spectrum modulation technique greatly extend the communication distance. It can be widely used in any use case that requires long-distance and low-data wireless communications. For example, automatic meter reading, building automation equipment, wireless security systems, industrial monitoring. It has features like small size, low power consumption, long transmission distance, strong anti-interference ability and so on.

LoRaWAN:

LoRaWAN uses LoRa technology to define end-to-end standard specifications to ensure interoperability between devices and gateways from different manufacturers.

Appearance

Main Features

• Apply SX1276 wireless communication module
• 2 sections ER14505 3.6V Lithium AA battery
• Temperature detection
• Distance detection
• The base is attached with a magnet that can be attached to a ferromagnetic material object
• Protection level: Main body IP65
• Compatible with LoRaWAN™ Class A
• Frequency hopping spread spectrum technology
• Configuration parameters can be configured through third-party software platforms, data can be read and alarms can be set via SMS text and email (optional)
• Available third-party platform: Actility / ThingPark, TTN, MyDevices/Cayenne
• Low power consumption and long battery life

Battery Life:

• Please refer to web: http://www.netvox.com.tw/electric/electric_calc.html
• At this website, users can find battery lifetime for variety models at different configurations.
  1. Actual range may vary depending on environment.
  2. Battery life is determined by sensor reporting frequency and other variables.

Set up Instruction

On/Off

indicator flashes once.
Turn off

(Restore to factory setting)

| Press and hold the function key for 5 seconds till green indicator flashes for 20 times.
Power off| Remove Batteries.
Note:| 1.    Remove and insert the battery; the device is at off state by default.
2.   On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor inductance and other energy storage components.
3.    Five seconds after power on, the device will be in engineering test mode.

Network Joining

Never joined the network| Turn on the device to search the network.
The green indicator stays on for 5 seconds: success The green indicator remains off: fail
---|---
Had joined the network| Turn on the device to search the previous network. The green indicator stays on for 5 seconds: success The green indicator remains off: fail

Function Key

Press and hold for 5 seconds| Restore to factory setting / Turn off
The green indicator flashes for 20 times: success The green indicator remains off: fail
---|---
Press once| The device is in the network: green indicator flashes once and sends a report The device is not in the network: green indicator remains off

Sleeping Mode

The device is on and in the
network| Sleeping period: Min Interval.
When the reportchange exceeds setting value or the state changes: send a data report according to
Min Interval.
---|---

Low Voltage Warning

Data Report

The device will immediately send a version packet report along with an uplink packet including status,distance, temperature, fill level of percentage.
The device sends data in the default configuration before any configuration is done.
Default Setting:
MaxTime: Max Interval = 15 min = 900s
MinTime: Max Interval = 15 min = 900s
BatteryChange = 0x01 (0.1v)
DistanceChange = 0x012C (300mm)
TemperatureChange = 0x0A (1°C)
OnDistanceThreshold = 0x01F4 (500mm)
FillMaxDistance = 0x07D0 (2000mm)
Data packet:
a. When used in waste bin detection: Distance, Temperature, FillLevel;
Status=0 (Invalid)
b. When used in parking detection: Status, Distance, Temperature;
FillLevel=0 (Invalid)
Note:
(1) The device report interval will be programmed based on the default firmware which may vary.
(2) The interval between two reports must be the minimum time.
Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver http://www.netvox.com.cn:8888/page/index to resolve uplink data.

Data report configuration and sending period are as following:

Min Interval
(Unit: second)| Max Interval
(Unit: second)| Reportable Change| Current Change≥
Reportable Change| Current Change＜
Reportable Change
---|---|---|---|---
Any number between
1~65535| Any number between
1~65535| Can not be 0.| Report
per Min Interval| Report
per Max Interval

Example of data configuration
FPort：0x07

CmdID– 1 byte
DeviceType– 1 byte – Device Type of Device
NetvoxPayLoadData– var bytes (Max=9bytes)

Description

| Device|

Cm d
ID

|

DTevice
ype

| NetvoxPayLoadData
---|---|---|---|---

ConfigReport
Re

| R7 18X| 0x01| 0x34| MinTime
(2bytes Unit:s)|

MaxTime
(2bytes Unit:s)

|

BatteryChange
(lbyte Unit:0.1v)

| DistanceChange (2byte Unit: I mm )|

Temperature
Change
(2byte Unit:0.1°C)

ConfigReport
Rsp

| oxs I|

Status
(0x00 success)

|

Reserved
(8Bytes,Fixed Ox00)

ReadConfig
ReportReq

| Ox02|

Reserved
(9Bytes,Fixed Ox00)

ReadConfig
ReportRsp

|

0x82

|

MinTime
(2bytes Unit:s)

| MaxTime
(2bytes Unit:s)| BatteryChange
(lbyte Unit:0.1v)| DistanceChange
(2byte Unit: I mm)|

Temperature
Change
(2byte Unit:0.1°C)

SetOnDistanceTh
resholdRreq

| 0x03| OnDistanceThreshold
(2byte Unit: I mm)| Reserved
(7Bytes,Fixed Ox00)
SetOnDistanceTh
resholdRrsp| Ox83|

Status
(0x00_success)

|

Reserved
(8Bytes,Fixed Ox00)

GetOnDistanceTh
resholdRreq

| Ox 04|

Reserved
(9Bytes,Fixed Ox00)

GetOnDistanceTh
resholdRrsp

| 0x84| OnDistanceThreshold
(2byte Unit: I nwn)| Reserved
(7Bytes,Fixed Ox00)
SetFillMax
DistanceReq| 0x05|

FillMaxDistance
(2byte Unit:1mm)

|

Reserved
(7Bytes,Fixed Ox00)

SetFillMax
DistanceRsp| Ox85|

Status
(0x00 success)

|

Reserved
(8Bytes,Fixed Ox00)

GetFillMax
DistanceReq

| | Ox06| |

Reserved
(9Bytes,Fixed Ox00)

GetFillMax
DistanceRsp

| | 0x86| | FillMaxDistance
(2byte Unit:Imm)|

Reserved
(7Bytes,Fixed Ox00)

Set Report Time
(1) Configure device parameters MinTime = 1min, MaxTime = 1min, BatteryChange = 0.1v, DistanceChange = 500mm、
TemperatureChange=2°C
Downlink: 0134003C003C0101F40014 003C(Hex) = 60(Dec), 01F4(Hex) = 500(Dec), 14(Hex) = 20(Dec)
Device returns:
8134000000000000000000 (Configuration is successful)
8134010000000000000000 (Configuration failed)
(2) Read device parameters
Downlink: 0234000000000000000000
Device returns:
8234003C003C0101F40014 (current device parameters)
Set Total Height of The Container
(3) Setting the total height of the container, FillMaxDistance = 5000mm
Downlink: 0534138800000000000000 1388(Hex) = 5000(Dec),
Device returns:
8534000000000000000000 (Configuration is successful)
8534010000000000000000 (Configuration failed)
(4) Read the total height of the container (FillMaxDistance)
Downlink:0634000000000000000000
Device returns:
8634138800000000000000 (Device current parameter)

Switch the Mode
If the mode of the device is waste bin detection, switch it to parking detection.
(5) Set FillMaxDistance to 0
Downlink： 0534000000000000000000
Device returns：
8534000000000000000000
(6) Read FillMaxDistance, and check whether it is set successfully.
Downlink： 0634000000000000000000
Device returns：
8634000000000000000000

Set Distance Threshold
(7) Set OnDistanceThreshold to the appropriate value
Downlink： 033401F400000000000000 // 01F4 (Hex) = 500 (Dec)
Device returns：
8334000000000000000000
(8) Read OnDistanceThreshold, and check whether it is set successfully.
Downlink： 0434000000000000000000
Device returns：
833401F400000000000000

*The mode switches via setting the value of FillMaxDistance and OnDistanceThreshold.
If the current mode of the device is waste bin detection, it can be switched to the parking detection by setting FillMaxDistance to 0 first, and then setting OnDistanceThreshold.
Conversely, the current mode of the device is parking detection, it can be switched to the waste bin detection by setting OnDistanceThreshold to 0 first, and then setting FillMaxDistance.

Example of Temperature/Distance Sensor calibration
Port:0x0E

Description

| CmdID| SensorType|

PayLoad(Fix =9 Bytes)

---|---|---|---

SetGlobal
CalibrateReq

| Ox01| Ox01 0x36|

Channel(lByte)
0 Channel 1,
1 Channe12,etc

|

Multiplier
(2bytes,Unsigned)

|

Divisor
(2bytes,Unsigned)

| DeltValue
(2bytes,Signed)|

Reserved
(2Bytes,Fixed Ox00)

SetGlobal
CalibrateRsp

| 0x81|

Channel(lByte)
O_Channell,
1Channe12,etc

| Status
(1Byte,0x00_success)|

Reserved
(7Bytes,Fixed Ox00)

GetGlobal
CalibrateReq| 0x02|

Channel
(1Byte,O_Channel1,l_Channe12,etc)

|

Reserved
(8Bytes,Fixed Ox00)

GetGlobal
CalibrateRsp

|

0x82

|

Channel(lByte)
O_Channell,
1 Channe12,etc

| Multiplier
(2bytes,Unsigned)| Divisor
(2bytes,Unsigned)| DeltValue
(2bytes,Signed)|

Reserved
(2Bytes,Fixed Ox00)

ClearGlobal
CalibrateReq

| (1\01| Reserved
(10Bytes,Fixed Ox00)
ClearGlobal
CalibrateRsp| 0x83|

Status
(1 Byte,0x00_success)

|

Reserved
(9Bytes,Fixed Ox00)

SensorType
Temperature 0x01
Distance 0x36

(1) Set the distance calibration:
If the distance between the device and detected object the R718X detects is 490mm and the actual distance is 500mm, it means
the calibration we want to make is +10mm.
SensorType =0x36, Channel 1= 00, Multiplier = 000A, Divisor = 0000, DeltValue=0001
Downlink：013600000A000000010000
Response：
8136000000000000000000（Configuration success）
(2) Check whether the setting in (1) calibration
Downlink：0236000000000000000000
Response：
823600000A000000010000 (Current configuration)
(3) Set the temperature calibration:
If the temperature the R718X detects is 26° and the actual temperature is 27°, it means the calibration we want to make is +1°.
SensorType =0x01 ,Channel 2= 01, Multiplier = 000A, Divisor = 0000, DeltValue=0001
Downlink：010101000A000000010000
Response：
8101010000000000000000（Configuration success）
(4) Check whether the setting in (3) calibration
Downlink：0201010000000000000000
Response：
820101000A000000010000（Current configuration）

Note:

1. When Multiplier is not 1, Calibration value = DeltValue*Multiplier.
2. When Divisor is not 1, Calibration value = DeltValue/Divisor.
3. The choices of the Channel would be 00-03 Channel
4. With different sensor type, it is forbidden to use that same Channel number.
5. This universal calibration supports calibration of positive and negative numbers.

Example for MinTime/MaxTime logic:
Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V

Note: MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration regardless BatteryVoltageChange value.

Mmple#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V.

Notes :

1. The device only wakes up and performs data sampling according to MinTime Interval. When it is sleeping, it does not collect data.
2. The data collected is compared with the last data reported. If the data variation is greater than the ReportableChange value, the device reports according to MinTime interval. If the data variation is not greater than the last data reported, the device reports according to MaxTime interval.
3. We do not recommend setting the MinTime Interval value too low. If the MinTime Interval is too low, the device wakes up frequently and the battery will be drained soon.
4. Whenever the device sends a report, no matter resulting from data variation, button pushed or MaxTime interval, another cycle of MinTime/MaxTime calculation is started.

Application scenario

In the use case of detecting the garbage in waste bin, the device should be installed on the top of the waste bin.
After the device is installed and powered, turn on the device and it will detect the distance between the device and the garbage as well as the percentage of the garbage in the waste bin.
H means the height of the waste bin (this value can be set with the payload command; the “fillmaxdistance” in payload means H)
D means the distance between the device and the garbage (this value is “distance” in uplinks)
L means the garbage (this value can be calculated by the “distance” in uplink and “fillmaxdistance” in payload)
Calculation: L = fillmaxdistacnce – distance

FillLevel means the percentage of the garbage in the waste bin.
FillLevel = ((H – D) / H) * 100%

Illustration 1.

Illustration 2.
If the R718X is installed as the following way, then the measured distance needs to add the height of the device itself which is 28mm.

Note:
(1) The default value of OnDistanceThreshold is 500mm, and the default value of FillMaxDistance is 2000mm.
(2) The detecting range of the device is 200mm~3500mm.

Installation

The waste bin with frame

The waste bin without the frame but an upper cover

The waste bin without the frame but an upper cover needs to be drilled out the required mounting holes in the cover, and then install the sensor on the cover. User should find and make sure the installation location that is parallel to the bottom of the waste bin. Namely, the detecting direction is perpendicular to the bottom of the waste bin.

When the device is installed under the cover of the waste bin, the appearance may be like the figure below.

Plastic Bucket Installation

Use screws and locking nuts to fix the device, as the figure for reference.

1. After finding the installation position, use the tool to drill 2 holes in the upper cover.
   M4 screws can be inserted into the hole.
   

2. Insert the screw with the gasket into the hole to install the device.
   

3. se a tool to tighten the locking nut.
   

Note:

1. The installation location can not be at the center of the cover.
   Suggest that installing the sensor should be outside the area of the circle with radius 5cm from the center of the cover.
   If the ultrasonic sensor is installed in the center, the ultrasonic signal will generate gain which will affect the measurement result
   

2. Please do not disassemble the device unless it is required to replace the batteries.
   Do not touch the waterproof gasket, LED indicator light, function keys when replacing the batteries.
   Please use suitable screwdriver to tighten the screws (if using an electric screwdriver, it is recommended to set the torque as 4kgf) to ensure the device is impermeable.

Information about Battery Passivation

Many of Netvox devices are powered by 3.6V ER14505 Li-SOCl2 (lithium-thionyl chloride) batteries that offer many advantages including low self-discharge rate and high energy density.
However, primary lithium batteries like Li-SOCl2 batteries will form a passivation layer as a reaction between the lithium anode and thionyl chloride if they are in storage for a long time or if the storage temperature is too high. This lithium chloride layer prevents rapid self-discharge caused by continuous reaction between lithium and thionyl chloride, but battery passivation may also lead to voltage delay when the batteries are put into operation, and our devices may not work correctly in this situation.
As a result, please make sure to source batteries from reliable vendors, and the batteries should be produced within the last three months.
If encountering the situation of battery passivation, users can activate the battery to eliminate the battery hysteresis.

To determine whether a battery requires activation

Connect a new ER14505 battery to a 68ohm resistor in parallel, and check the voltage of the circuit.
If the voltage is below 3.3V, it means the battery requires activation.

How to activate the battery

a. Connect a battery to a 68ohm resistor in parallel
b. Keep the connection for 6~8 minutes
c. The voltage of the circuit should be ≧3.3V

Important Maintenance Instruction

Kindly pay attention to the following in order to achieve the best maintenance of the product:

• Keep the device dry. Rain, moisture, or any liquid might contain minerals and thus corrode electronic circuits. If the device gets wet, please dry it completely.
• Do not use or store the device in dusty or dirty environment. It might damage its detachable parts and electronic components.
• Do not store the device under excessive heat condition. High temperature can shorten the life of electronic devices, destroy batteries, and deform or melt some plastic parts.
• Do not store the device in places that are too cold. Otherwise, when the temperature rises to normal temperature, moisture will form inside, which will destroy the board.
• Do not throw, knock or shake the device. Rough handling of equipment can destroy internal circuit boards and delicate structures.
• Do not clean the device with strong chemicals, detergents or strong detergents.
• Do not apply the device with paint. Smudges might block in the device and affect the operation.
• Do not throw the battery into the fire, or the battery will explode. Damaged batteries may also explode.

All of the above applies to your device, battery and accessories. If any device is not working properly, please take it to the nearest authorized service facility for repair.

Read User Manual Online (PDF format)

Download This Manual (PDF format)

Download this manual  >>