User Manual for netvox models including: R718PE, Wireless Top Mounted Ultrasonic Liquid Level, Sensor
R718PE is a ClassA device based on LoRaWAN open protocol of Netvox. R718PE is a wireless communication device that can detect water level and parking space.
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...
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DocumentDocumentR718PE Wireless Top Mounted Ultrasonic Liquid Level Sensor Wireless Top Mounted Ultrasonic Liquid Level Sensor R718PE 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. Table of Content 1. Introduction...................................................................................................................... 2 2. Appearance ...................................................................................................................... 3 3. Main Feature .................................................................................................................... 3 4. Set up Instruction ............................................................................................................. 4 5. Data Report ...................................................................................................................... 5 6. Application..................................................................................................................... 11 7. Installation ..................................................................................................................... 12 8. Information about Battery Passivation .......................................................................... 16 8.1 To determine whether a battery requires activation .............................................. 16 8.2 How to activate the battery .................................................................................... 16 9. Important Maintenance Instruction ............................................................................... 17 1 1. Introduction R718PE is a ClassA device based on LoRaWAN open protocol of Netvox. R718PE is a wireless communication device that can detect water level and parking space. The device is connected to an ultrasonic sensor to detect its current water level or the status of parking space, and the detected data will be transmitted to other devices through the wireless network for display. It adopts SX1276 wireless communication module and is compatible with LoRaWAN protocol. 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 2. Appearance Indicator Func tion Key Ultrasonic Ranging Sensor 3. Main Feature Apply SX1276 wireless communication module 2 sections ER14505 3.6V Lithium AA SIZE batteries Liquid level detection Host Body Protection Level: IP65 / IP67 (optional), Ultrasonic Probe Protection Level: IP67 Compatible with LoRaWANTM 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 Note: Battery life is determined by the sensor reporting frequency and other variables, please refer to http://www.netvox.com.tw/electric/electric_calc.html. On this website, users can find battery life time for varied models at different configurations. 3 4. Set up Instruction On/Off Power on Insert batteries. (users may need a screwdriver to open) Turn on Turn off (Restore to factory setting) Press and hold the function key for 3 seconds till the green indicator flashes once. Press and hold the function key for 5 seconds till green indicator flashes 20 times. Power off Remove Batteries. 1. Remove and insert the battery; the device is at off state by default. Turn on the device to use again. Note: 2. On/off interval is suggested to be about 10 seconds to avoid the interference of capacitor inductance and other energy storage components. 3. In the first 5 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 to join. The green indicator stays on for 5 seconds: success The green indicator remains off: fail Had joined the network (not at 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 for 20 times: success The green indicator remains off: fail Press once Sleeping Mode 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 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 Low Voltage 3.2V 4 5. Data Report After power on, the device will immediately send a version packet report and an attribute packet report. The device sends data according to the default configuration before any other configuring. Default Setting Maximum time: Max Interval = 15 min Minimum time: Min Interval = 15 min BatteryVoltageChange - 0x01 (0.1V) DistanceChange - 0x012C(300mm) Note: 1. The cycle of the device sending the data report is according to the default. 2. The interval between two reports must be the MinTime 3. R718PE defaults Max Interval = 15 min, Min Interval = 15 min. (If there are special customized shipments, the setting will be changed according to customer's requirements.) Please refer Netvox LoRaWAN Application Command document and Netvox Lora Command Resolver http://www.netvox.com.cn:8888/page/index to resolve uplink data. Example of ConfigureCmd FPort0x07 Bytes 1 1 CmdID DeviceType CmdID 1 bytes DeviceType 1 byte Device Type of Device NetvoxPayLoadData var bytes (Max=9bytes) Var(Fix =9 Bytes) NetvoxPayLoadData 5 Cmd Device Description Device ID Type NetvoxPayLoadData ConfigReport Req 0x01 MinTime (2bytes Unit: s) MaxTime (2bytes Unit: s) BatteryChange (1byte DistanceChange (2byte Unit:0.1v) Unit:1mm) Reserved (2byte) ConfigReport Rsp 0x81 Status (0x00_success) Reserved (8Bytes, Fixed 0x00) ReadConfig ReportReq ReadConfig ReportRsp SetOnDistance ThresholdRreq 0x02 0x82 0x03 Reserved (9Bytes, Fixed 0x00) MinTime (2bytes Unit: s) MaxTime (2bytes Unit: s) BatteryChange (1byte Unit: DistanceChange (2byte Unit: 0.1v) 1mm) Reserved (2byte) OnDistanceThreshold (2byte Unit: 1mm) Reserved (7Bytes, Fixed 0x00) SetOnDistance ThresholdRrsp GetOnDistanc e ThresholdRreq GetOnDistanc e ThresholdRrsp R718 PE 0x83 0x04 0x84 0x B1 SetFillMax DistanceReq 0x05 Status (0x00_success) Reserved (8Bytes, Fixed 0x00) Reserved (9Bytes, Fixed 0x00) OnDistanceThreshold (2byte Unit: 1mm) FillMaxDistance (2byte Unit: 1mm) Reserved (7Bytes, Fixed 0x00) Reserved (7Bytes, Fixed 0x00) SetFillMax DistanceRsp 0x85 Status (0x00_success) Reserved (8Bytes, Fixed 0x00) GetFillMax DistanceReq 0x06 Reserved (9Bytes, Fixed 0x00) GetFillMax DistanceRsp 0x86 FillMaxDistance (2byte Unit: 1mm) Reserved (7Bytes, Fixed 0x00) 6 (1) Configure the device parameter MinTime = 1min, MaxTime = 1min, BatteryChange = 0.1v, DistanceChange = 500mm Downlink: 01B1003C003C0101F40000 Device Return: 81B1000000000000000000 (configuration success) 81B1010000000000000000 (configuration failure) (2) Read the device parameter Downlink: 02B1000000000000000000 Device Return: 82B1003C003C0101F40000 (device current parameter) (3) Configure the device parameter FillMaxDistance = 5000mm Downlink: 05B1138800000000000000 Device Return: 85B1000000000000000000 (configuration success) 85B1010000000000000000 (configuration failure) (4) Read device parameter FillMaxDistance Downlink: 06B1000000000000000000 Device returns: 86B1138800000000000000 (device current parameter) 7 Level Sensor Calibrate configuration example: FPort:0x0E Description Cmd Sensor ID Type PayLoad(Fix =9 Bytes) SetGlobal CalibrateReq 0x01 Channel (1Byte) 0_Channel1, 1_Channel2,etc Multiplier (2bytes, Unsigned) Divisor (2bytes, Unsigned) DeltValue (2bytes, Signed) Reserved (2Bytes, Fixed 0x00) SetGlobal CalibrateRsp 0x81 0x36 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) ClearGlobal CalibrateReq 0x03 Reserved (10Bytes, Fixed 0x00) ClearGlobal CalibrateRsp 0x83 Status (1Byte,0x00_success) Reserved (9Bytes, Fixed 0x00) (1) Set the calibration (GlobalCalibrate configuration): If the distance between the device and the water R718PE detects is 490mm and the actual distance is 500mm, it means the calibration should be +10mm. Channel 1= 00, Multiplier = 000A, Divisor = 0000, DeltValue=0001 Downlink013600000A000000010000 Response: 8136000000000000000000 (Configuration success) 8136010000000000000000 (Configuration failure) (2) Check whether the setting in (1) calibration Downlink0236000000000000000000 Response823600000A000000010000 (Current configuration) (3) Clear the setting Downlink0300000000000000000000 Response8300000000000000000000 (Configuration success) 8301000000000000000000 (Configuration failure) 8 Example for MinTime/MaxTime logic: Example#1 based on MinTime = 1 Hour, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange=0.1V MaxTime MaxTime Sleeping(MinTime) Wakes up and collects data REPORTS 3.6V Sleeping(MinTime) Wakes up and collects data REPORTS 3.6V Wakes up and collects data REPORTS 3.6V Note: MaxTime=MinTime. Data will only be report according to MaxTime (MinTime) duration regardless BatteryVoltageChange value. Example#2 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V MaxTime Sleeping(MinTime) sleeping sleeping sleeping 0H 15th M 30 th M 45 th M 1H 2H Wakes up and collects data REPORT 3.6V Wakes up and collects data 3.6V Does not report Wakes up and collects data 3.6V Does not report Wakes up and collects data REPORT 3.6V 9 Example#3 based on MinTime = 15 Minutes, MaxTime= 1 Hour, Reportable Change i.e. BatteryVoltageChange= 0.1V sleeping Wakes up and collects data 3.5V |3.5-3.6|=0.1 REPORTS 3.5V sleeping ... Users push the button, REPORTS 3.5V. Recalculate MaxTime. MaxTime Wakes up and collects data 3.5V Does not report 0H Wakes up and collects data REPORTS 3.6V 15th M Wakes up and collects data 3.6V Does not report 30th M 45th M Wakes up and collects data 3.5V Does not report 1H 1H 10th M 1H 25th M Wakes up and collects data 3.5V Does not report Wakes up and collects data 3.5V Does not report 1H 40 th M 1H 55 th M 2H 10th M Wakes up and collects data 3.5V Does not report Wakes up and collects data REPORTS 3.5V 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 to set 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. 10 6. Application In the case of detecting the water level of a water tower/tank, install the device on the top of the water tower/tank and power on the device after the fixation is completed. The device collects the distance between the water level and the sensor and the percentage of the water level in the water tower/tank once in a while. H: the height of the water tank (this value can be set with the payload command; the "fillmaxdistance" in payload means H) D: the distance between the device and the water (this value is "distance" in uplinks) L: the water level (this value can be calculated by the "distance" in uplink and "fillmaxdistance" in payload) Calculation: L = fillmaxdistacnce - distance FillLevel: the percentage of the water level in the water tank. FillLevel = ((H - D) / H) * 100% Note: (1) The detecting range of the device is 250mm~8000mm (2) When the device is used as water level detection or trash can detection, the detected distance (Distance) and the percentage of water level or garbage (FillLevel) are reported. Otherwise, the parking status (Status) is not reported (in this case, Status is 0 by default). (3) When the device is used as parking space detection, it will report the detected distance (Distance) and the parking status (Status) (with car report "on", without car report "off" ), but FillLevel is not reported. (At this time, FillLevel defaults 0.) 11 Illustration 7. Installation Kindly note the illustration is only for reference. 1. The device can be installed in the middle or anywhere of the top of the container that is flat enough to ensure the ultrasonic detection direction will be vertical to the detected object, so the accuracy can be maintained. 2. When the use case is water tank, the diameter of the water tank is recommended to be larger than 60cm. 3. Customers can refer to the below formula to see if the container is suitable: tan7.5°=A / B A is the radius of the container (water tank), B is the height of the container (water tank); 12 tan7.5° A B 3.9 30 6.6 50 13.2 100 19.7 150 26.3 200 32.9 250 39.5 300 46.1 350 0.1316 52.6 400 59.2 450 65.8 500 72.4 550 79.0 600 85.5 650 92.1 700 98.7 750 105.3 800 Reference Form Unit: cm A B 4. If the top of the water tank can be opened, it is recommended to make a hole of diameter 32mm on the top of the water tank. 13 5. If the top of the water tank cannot be opened, the hole made on the top of the water tank is recommended to be 45mm diameter. It is recommended to add a gasket (size: 32.4*57.4*3mm) between the hole and the sensor. 14 A 6. The place directly below the ultrasonic probe should avoid to be put in some position to reduce the impact on measurement accuracy. For example, the position that the liquid level is violently fluctuating such as the water inlet and outlet, and the position that foam floats are easy to accumulate. 7. There should be no obstacles within the radiation range of the ultrasonic beam to avoid affecting the measurement. For example, when installing in a well, it should avoid escalators, water inlet and outlet pipes and other facilities in the well. 8. The installation site should be far away from the equipment that produces strong electromagnetic interference. 9. 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. 15 8. 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. 8.1 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. 8.2 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 16 9. 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 completely. · Do not use or store in dusty or dirty areas. This way can damage its detachable parts and electronic components. · Do not store in excessive heat place. High temperatures can shorten the life of electronic devices, destroy batteries, and deform or melt some plastic parts. · Do not store in excessive cold place. 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. Treating equipment roughly can destroy internal circuit boards and delicate structures. · Do not wash with strong chemicals, detergents or strong detergents. · 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. 17netvox eng Adobe PDF Library 11.0