netvox R311LA Wireless Infrared Proximity Sensor User Manual

netvox R311LA Wireless Infrared Proximity Sensor 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.

1.   Introduction

**** R311LA is a Wireless Infrared Proximity Sensor for Netvox Class type devices based on the Lora WAN open protocol.
It has an infrared proximity sensor that can detect if there is object existing within its detection range and transmits the detected data to Gateway for display via a wireless network.

LoRa Wireless Technology:
LoRa is a wireless communication technology dedicated to long distance and low power consumption. Compared with other communication methods, LoRa spread spectrum modulation method greatly increases to expand the communication distance. Widely used in long-distance, low-data wireless communications. For example, automatic meter reading, building automation equipment, wireless security systems, industrial monitoring. Main features include small size, low power consumption, transmission distance, 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.

2.   Appearance

3. Main Feature

• Compatible with LoRaWAN™ Class A
• Adopt SX1276 wireless communication module
• 2 sections 3V CR2450 button batteries power supply
• Infrared Proximity Sensor
• Frequency hopping spread spectrum technology
• Configuration parameters can be configured via a third-party software platform, data can be read and alerts can be set via SMS text and email (optional)
• Available third-party platform: Activity / Thing Park, TTN, My Devices/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 life time for various models at different configurations.

1. Actual range may vary depending on
2. Battery life is determined by sensor reporting frequency and other

4.Set up Instruction

On/Off

Power on| Insert batteries (users may need a screwdriver to open )

Insert two sections 3V CR2450 button batteries and close the battery cover. Note: Require 2 button batteries to supply power at the same time.

Turn on| Press any function key and the indicator flashes once.
Turn off

(Restore to factory setting)

| Press and hold the function key for 5 seconds and the green indicator flashes 20 times.
Power off| Remove Batteries
**** Note:| 1.Remove and insert the battery, and the device memorizes previous on/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.If press any function key and insert batteries at the same time, it will enter engineer testing mode.

**Network Joining
** Never joined the network| Turn on the device to search the network to join. The green indicator stays on for 5 seconds: success The green indicator remains off: fail
Had joined the network (not restore to factory setting)| Turn on the device to search the previous network to join. The green indicator stays on for 5 seconds: success The green indicator remains off: fail
**** Fail to join the network| Suggest to check the device verification information on the gateway or consult your platform server provider.

Function Key

**** Press and hold for 5 seconds| Restore to factory setting / Turn off

The green indicator flashes 20 times: success The green indicator remains off: fail

**** Press once| The device is in the network: the green indicator flashes once and sends a report

The device is not in the network: the green indicator remains off

Sleeping Mode
**** The device is on and in the network| Sleeping period: Min Interval.

When the report change exceeds setting value or the state changes, a data report is sent according to Min Interval.

Low Voltage Warning

5.   Data Report

**** After the device is powered, it will immediately send a version package and an attribute report data that reports the current status of the object and the raw data of infrared range.

The device sends data according to the default configuration before any other configuring.

Default Setting

Maximum time: 3600s
Minimum time: 3600s (By default, the current is detected every Min Time.) Battery: 0x01 (0.1V)
On Distance Threshold :0xC409 little-endian (2500)

• Distance Threshold value is used little-endian;

When you need configure distance threshold default setting, please change to little-endian, for example 2500(Hex) =9C4(Dec) is big-endian and 0xC409 is little-endian

Note:

1. The cycle of the device sending the data report is according to the
2. The interval between two reports must be the Min Time.
3. If there are special customized shipments, the settings will be changed according to customer’s

The device reported data parsing please refer to

Netvox Lora WAN Application Command document and Netvox Lora Command Resolver

http://loraresolver.netvoxcloud.com:8888/page/index

Determining the status of the object

• The raw data of detection of infrared ranging is greater than the On Distance Threshold parameter setting value, the status would be 1, indicating the presence of the
• The raw data of detection of infrared ranging is smaller than the On Distance Threshold parameter setting value, the status would be 0, indicating the absence of the object

Threshold setting instructions

1. First of all, fix the location of the
2. When first detection appears no object, the device detects RawSenseData (infrared ranging data), assuming A (2400)
3. Then detect again appears there is object, the device detects RawSenseData (infrared ranging data), assuming B (4000)
4. The range of Threshold(X) is set: A（2400）< X < B（4000）, it would recommend to take a value in the middle of range.

Note：

The RawSenseData value has no unit and is a signal value of a distance. The closer the device is to the detected object, the larger the value; The farther the device is to the detected object, the smaller the value.

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

5.1   Configure Cmd

Fport : 0x07

Description

|

Device

|

Cmd ID

|

Device Type

|

Netvox Pay Load Data

---|---|---|---|---
Config Report Req|

R311LA

|

0x01

|

0xAA

| Min Time (2bytes Unit: s)| Max Time (2bytes Unit: s)| Battery Change (1byte Unit: 0.1v)| Reserved (4Bytes, Fixed

0x00)

Config Report Rsp|

0x81

| Status (0x00_success)| Reserved (8Bytes, Fixed 0x00)
Read Config Reporter|

0x02

| Reserved (9Bytes, Fixed 0x00)

Read Config ReportRsp

|

0x82

| MinTime (2bytes Unit: s)| MaxTime (2bytes Unit: s)| Battery Change (1byte Unit: 0.1v)| Reserved (4Bytes, Fixed 0x00)

Set On Distance ThresholdRreq

|

0x03

| OnDistanceThreshold (2byte )| Reserved (7Bytes, Fixed 0x00)

SetOnDistance ThresholdRrsp

|

0x83

| Status (0x00_success)| Reserved (8Bytes, Fixed 0x00)

GetOnDistance ThresholdRreq

|

0x04

| Reserved (9Bytes, Fixed 0x00)

GetOnDistance ThresholdRrsp

|

0x84

| OnDistanceThreshold (2byte )| Reserved (7Bytes, Fixed 0x00)

Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. Battery Voltage Change=0.1V

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

Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. Battery Voltage Change= 0.1V.

Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. Battery Voltage Change= 0.1V.

Notes:

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

5.2   Global Calibrate Cmd

Fport : 0x0E

Description

| Cmd ID| Sensor Type|

PayLoad(Fix =9 Bytes)

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

SetGlobal CalibrateReq

|

0x01

|

0x36

| Channel (1Byte) 0_Channel 1, 1_Channel 2,etc|

Multiplier (2bytes,Unsigned)

|

Divisor (2bytes,Unsigned)

|

DeltValue (2bytes,Signed)

|

Reserved (2Bytes,Fixed 0x00)

SetGlobal CalibrateRsp

|

0x81

| Channel (1Byte) 0_Channel1,

1_Channel2,etc

|

Status (1Byte,0x00_success)

|

Reserved (7Bytes,Fixed 0x00)

GetGlobal CalibrateReq

|

0x02

| Channel (1Byte) 0_Channel1, 1_Channel2,etc|

Reserved (8Bytes,Fixed 0x00)

GetGlobal CalibrateRsp

|

0x82

| Channel (1Byte) 0_Channel1, 1_Channel2,etc|

Multiplier (2bytes,Unsigned)

|

Divisor (2bytes,Unsigned)

|

DeltValue (2bytes,Signed)

|

Reserved (2Bytes,Fixed 0x00)

| | | | | | | | | |

Note:

1. When Multiplier does not = 0, Calibration value = DeltValue*Multiplier. When Divisor does not = 0, Calibration value = DeltValue/Divisor.
2. The choices of the Channel would be 00-03. Channel
3. This universal calibration supports calibration of positive and negative
4. This universal calibration supports calibration of positive and negative numbers.

5.3   ReportDataCmd

Fport: 0x06

R311LA| 0x AA| 0x01| Battery (1Byte, unit:0.1V)| Status (1Byte,0x01_On 0x00_Off)| RawSenseData (2Bytes)| Reserved (4Bytes,fixed 0x00)
---|---|---|---|---|---|---

Uplink：01 AA 01 1E 01 0BB8 00000000 , 0BB8 Hex=3000Dec

6.   Installation

1. **** Remove the 3M release paper on the back of the device and attach the device to the smooth wall (please do not stick it to the rough wall to avoid falling off after a long-time usage).

Note

• Wipe the wall surface before installation to avoid dust on the wall surface that affect the effect of the
• Do not install the device in a metal shielded box or other electrical equipment around it to avoid affecting the wireless transmission of the

2. According to the situation of different paper boxes, choose the appropriate installation Take the large roll paper box as an example, as the right figure.
3. The status bits for judging whether there is toilet paper are as follows:
   A. The raw data of infrared distance measurement (RawSenseData) is greater than the setting value of parameter — The status bit is 1 indicating that there is toilet paper.
   A. The raw data of infrared distance measurement (RawSenseData) detection is less than or equal to the setting value of parameter — OnDistanceThreshold. The status bit is 0 indicating that there is no toilet

Note:

RawSenseData is the approach signal value. The closer the device is to the detected object, the larger the value; otherwise, the smaller the value. R311LA can be used in the toilet to detect whether the toilet paper is used up.

Battery Installation Steps:

Warning: When replacing the battery, it must be done by professionals.
Please must use 2 CR2450 batteries for this device, and a single battery specification is 3V. Please note that the positive and negative poles of the battery are not reversed.

Step 1: Use a screwdriver, along the opening of the back cover (the red frame in the Fig. 1.), gently press it toward the center of the device, and then remove the battery back cover toward the back of the device (with sticker).

Step 2: Put 2 batteries into the battery slot, please note that the positive pole of the battery is facing up and the negative pole is facing down.

Step 3: First align the side groove of the battery back cover with the protruding points of the host body (the red frame in Fig. 2.), and then close the battery back cover.

7. Important Maintenance Instruction

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

• Keep the equipment dry. Rain, moisture and various liquids or water may contain minerals that can corrode electronic circuits. In case the device is wet, please dry it
• Do not use or store in dusty or dirty areas. This way can damage its detachable parts and electronic
• Do not store in excessive heat place. High temperatures can shorten the life of electronic devices, destroy batteries, and deform or melt some plastic
• Do not store in excessive cold place. Otherwise, when the temperature rises to normal temperature, moisture will form inside which will destroy the
• Do not throw, knock or shake the Treating equipment roughly can destroy internal circuit boards and delicate structures.
• Do not wash with strong chemicals, detergents or strong
• Do not paint the device. Smudges can make debris block detachable parts up and affect normal operation.
• Do not throw the battery into the fire to prevent the battery from exploding. Damaged batteries may also explode.

All the above suggestions apply equally to your device, batteries and accessories. If any device is not operating properly.

Please take it to the nearest authorized service facility for repairing.

References

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