what is lora

What is Lora Wireless Technology

Lora

LoRa is a spread spectrum wireless technology, developed by Semtech Corporation. It has been developed to allow long distance transmission of low rate data.

The low rate data is collected by remote field sensors and actuators, and is used for Internet of Things and M2M applications. Lora uses the 868 Mhz unlicensed radio spectrum, in what is known as the ISM (Industrial, Scientific and Medical) bands to wirelessly facilitate low power, wide area data communication between the remote sensors and gateway devices, which connect to the Internet, or other network.

Lora is not suitable for every Industrial Internet Of Things IIOT application.

For example, if you wanted to transmit wireless CCTV images, then Lorawan would not be suitable, due to its low rate of data transfer.

What Lora excels in, however, is in transmitting small amounts of data long distances, and at low power consumption.

Low power consumption is important to wireless IIOT because some of the field sensors which record the data may be in remote locations.

Remote locations include roads and fields, which will be time-consuming and therefore expensive to get to.

By having a low power consumption rate, Lora enabled sensors do not have to have their batteries replaced very often.

Devices can be engineered to run on the same battery power supply for a few years.

Liquid Level Monitoring

LoraWAN can be used to transmit liquid level monitoring sensor data.

Examples of liquids include fuels, water, lubricants, and coolants.

The sensor by Tekelek uses ultrasonic technology to monitor liquid levels.

Using ultrasonic sensors connected to a Lora network offers accurate and reliable liquid measurement.

The battery life is more than ten years.

Using Lora long-range technology gives up to 9.5 miles range, which is 15 kilometres.

Internet of Things | Two Way Radio Wireless Communications – Yesway Communications

lorawan integration

LoraWAN Advantages for IOT

LoraWAN advantages for the Internet of Things, also known as IoT, are discussed in this article.

LoraWAN is a useful technology for business process improvement.

LoraWAN is a low data rate, low power, long-distance wireless technology.

The ‘Lora’ part of the name, stands for ‘LOng RAnge’.

LoraWAN is designed for Internet of Things (IoT) uses.

LoRa technology offers bi-directional communication, end-to-end security, mobility and localisation options.

Lora typically operates within license-free ISM (Industrial, Scientific, Medical) radio frequency bands located below 1 Gigahertz (GHz).

Operating in the ISM frequency bands, allows anyone to build a LoraWAN network, without the cost of Ofcom (in the UK) spectrum operating licences.

Lora technology provides a very long-transmission range, compared with Wifi & Bluetooth etc, while using exceptionally low power consumption.

There are of course IOT applications that are better suited to other wireless technologies, such as Wifi.

LoraWAN can only transmit small amounts of data at a time, so is not suitable for streaming video for example.

Lorawan Advantages are listed below:-

Long-range and deep penetration

LoraWAN is good at penetrating into buildings, or even underground. Therefore Sensors can be located indoors, outdoors and even underground, and still be able to communicate with the receiving Gateway device.

Distances of up to 50Km can be achieved in open areas and up to 10km within a town or city.

Low Power

LoraWAN’s advantage for IoT is offering low data bit rates, which results in low energy consumption.


Environmental Sensors such as Smart Parking or Soil sensors are designed with Lora technology, to send small amounts of data when required.

How often the small amounts of data are sent can be designed to be event-driven or at a scheduled time period.

This enables battery life to last for up to 10 years.

High Network Capacity

Lora uses an adaptive data rate and features a multi-channel multi-modem transceiver in the gateway device.

This allows for simultaneous messages to be received on multiple channels.

Therefore a LoRaWAN network has very high capacity and scalability options..

Open Standard, unlicensed band

The LoRaWAN specification is supported and maintained by the LoRa Alliance.

LoraWAN mostly operates in the licence free ISM (Industrial Scientific Medical) bands.

In Europe the frequency is 868MHz, and 915 in the USA etc.

The advantage of LoraWAN operating in an ISM band is that there are no expensive licence fees to be paid to local regulatory bodies (Ofcom in the UK, for example).

A potential disadvantage of using unlicenced frequency spectrum is interference from other users.

Security

Lora has AES-128 encryption built in as standard.

Ease of Installation

As Lora connected Sensors consume only tiny amounts of power, they can run from batteries for a number of years. This makes installation simple, as time-consuming & expensive cabling isn’t required.

Uses of LoraWAN

LoraWAN is great for a number of application areas. Some of these are listed below:

Smart Agriculture

Smart agriculture is a term that refers to using sensor technology monitor environmental factors.

Environmental factors that are monitored include soil Ph, moisture content, water levels etc.

The data from the sensors is fed back to the internet or local server, for analysis and processing.

As Lora is a two-way technology, it can also be used to send data commands out to equipment in the fields, as well as receive data.

This could for example allow water valves to be remotely controlled when the sensors detect a field that needs watering.

Smart Cities

Smart cities monitor environmental conditions and adjust and respond.

Lora is a perfect technology for sensors, as batteries can last for years, and it is long range.

An example application of LoraWAN as part of a Smart City ecosystem is its use in Smart Parking systems.

Smart parking systems use sensors embedded into the floor of a car park, to detect whether there is a car in a parking space.

This data is used to direct motorists to available free parking, and to make cities run smoother.

Yesway is based in Lincoln, UK.

+44 (01522) 740818

This article was written by Yesway engineer Craig Miles

Internet of Things | Two Way Radio Wireless Communications – Yesway Communications

Induction Motor

Preventive Maintenance For Electric Motors

Preventative Maintenance

Preventive maintenance programmes  are the key to reliable, long-life operation of electric motors.
Whilst AC Induction Motors are particularly reliable in service, almost all electrical equipment requires periodic planned inspection and maintenance. Planned preventive maintenance ensures electrical motors, and starters are kept in good working condition at all times. This is critical for businesses that rely on electric motors. A scheduled routine of motor inspection should be carried out throughout the motor’s life. Periodic motor inspection helps prevent serious damage to motors by locating potential problems early.

Periodic Inspections

Planned electric motor maintenance programmes are designed to help prevent breakdowns, rather than having to repair motors after a breakdown. In industrial operations, unscheduled stoppage of production or long repair shutdowns is expensive, and in marine shipping environments, a potential safety issue. Periodic inspections of motors are therefore necessary to ensure best operational reliability.

Preventative maintenance programmes require detailed checks to be effective. All motors onsite (factory, ship etc) should be given their own individual identification (ID) number and have a record log. The record log is usually computerised these days. The motor records kept should identify the motor, brand, inspection dates and descriptions of any repairs previously carried out. By record keeping, the cause of any previous breakdowns can help indicate the cause of any future problems that might occur.

All preventative maintenance programmes should refer to the equipment manufacturer’s technical documentation prior to performing equipment checks.

There are simple routine maintenance checks that can be applied to three phase induction motors, which help ensure a long service life to a motor. 

The Simple checks that can be carried out, include a review of the service history, noise and vibration inspections. Previous noise issues could for example be due to motor single phasing. Previous vibration may have been due to worn bearings, which allow the Stator to turn. Other checks include visual inspections (damage and burning), windings tests (insulation resistance & continuity), brush and commutator maintenance (dc motors) and bearings and lubrication.

Inspection frequency and the degree of inspection detail may vary depending on such factors as the critical nature of the motor, it’s function and the motor’s operating environment. An inspection schedule, therefore, must be flexible and adapted to the needs of each industrial or marine environment.

A modern approach to electric motor preventative maintenance is to connect the motor to the Internet cloud, or local company server network. This can form part of your ongoing business improvement process.

Motor performance parameters such as phase current, rotational speed, heat and vibration, can all be recorded using sensors.

The sensors are attached either directly to the motor, in the case of vibration sensing, or connected to the power supply feed cable.

Wireless technologies such as LoraWAN can be used to connect remote machinery to the Internet of Things Cloud.

This is also known as IOT or IIOT.

(c) Craig Miles 2019.  craigmiles.co.uk & yesway Ltd

For bespoke electrical training for business & individuals with Craig, call Yesway on  +44 (01522) 740818

two way radio

What is a LoraWAN Gateway

A LoraWAN Gateway is a device that receives (and potentially sends) the wireless data from your lora enabled sensors, and then connects it to the Internet.

These sensors are typically low powered devices capable of detecting such things as moisture of the soil, pollution levels, or pretty much whatever you wish to measure.

The LoraWAN Gateway can be connected to the Internet in a variety of ways, such as Ethernet, 3G,4G and 4G LTE.

Manufacturers include Link-Labs, MultiTech and Kerlink

LORA itself is a low power network technology that is an alternative technology to other standards such as Sigfox.

Internet of Things