What is the Lo-Ra Tech& application?

What’s Lo-Ra
Lo-Ra is innovated by a company named semtech, its a low voltage ethernet wireless standard. Low voltage normally hardly to cover to long range transmission distance. It will be spent large consumption, seems its hard to realize.
However LoRa did it, just like its name: LoRa: Long range radio, the biggest advantage is wireless transmission radio is longer a lot at the same power consumption condition. So it has realized low voltage and long range 2in1. At the same consumption, the wireless radio can be enlarged 3-5 times.

Features of LoRa

Transmission distance: towns/city: 2-5km.

Down towns: 15KM max.

Working frequency: ISM

Frequency: 433mhz, 868mhz, 915mhz. Alean default frequency is 433mhz, if need other frequency, its able to change the module.

Standard: IEE802 15.4g.

Modulation method: Based on spread spectrum technology, a variant of linear modulation spread spectrum (CSS), with forward error correction (FEC) capability, proprietary patented technology of semtech.

Capacity: A LoRa gateway can connect to thousands of LoRa nodes. Battery life: up to 10 years.

Security: AES128 encryption.

Transmission rate: hundreds to tens of Kbps, the lower the rate, the longer the transmission distance.

This is like a person picking things, picking more and not going too far, and less can go far.

>LoRa & LoRaWan
LoRa & LoRaWan is easy to mixed it

>LoRa Wan Protocol stack
From the above figure, LoRa is a subset of LoRa Wan, LoRa only includes the physical layer definition, and LoRa Wan also includes the link layer.

LoRaWan

This picture is the network architecture diagram of LoRaWan.

On the left are various application sensors, including smart water meters, smart trash cans, logistics tracking, vending machines, etc. On the right is the LoRaWan gateway, gateway conversion protocol, which converts the data of LoRa sensors into The format of TCP/IP is sent to the Internet. The LoRa gateway is used in the long-distance star architecture, which is multi-channel, multi-modulation transceiver, and multi-channel simultaneous demodulation.

Due to the LoRa feature, multiple signals can be demodulated simultaneously on the same channel. The gateway uses an RF device that is different from the terminal node and has a higher capacity. It acts as a transparent bridge to relay messages between the terminal device and the central network server.

The gateway is connected to the network server through a standard IP connection, and the terminal device uses unicast wireless communication messages to one or more gateways.

In fact, LoRaWan is not a complete communication protocol, because it only defines the physical layer and the link layer, the network layer and the transport layer are not, the functions are not perfect, there is no roaming, there is no main function of the communication protocol such as network management.

LoRa Technology used in Alean wireless alarm System

For Alean, there is complete series of LoRa alarm control panels with alarm detectors.

The alarm panel has AL-238PL , Q800-300 Models, Q800-300 is a touch screen linux operation system alarm panels.

Alean LoRa detectors includes:

PIR Detector         :EAP-150XT(Lora) ,

LoRa Beam Barrier   : ABI-10W(432L&654L) LoRa,

LoRa Panic button    :AL-01A(Lora),

LoRa Smoke Detector :JA-5198A(Lora),

LoRa Gas Detector   :JA-5188(Lora),

LoRa Door Mangetic  :EP-15 (Lora)  etc,