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| Home > About Us >Industry News |
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| What is the LoRa Tech& application? |
| 2021.01.20 |
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.png) What’s LoRa
LoRa is innvoated 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 comsuption, seems its hard to realize.
However LoRa did it, just like its name: LoRa: Long range radio, the biggest advantage is wireless transmission raido is longer a lot at the same power comsuption condition. So it has realized low voltage and long range 2in1. At the same comsuption, the wireless radio can be enlarged 3-5 times.
Features of LoRa
Transmittion distance: towns/city: 2-5km.
Downtowns: 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
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LoRaWanProtocol stack
From the above figure, LoRa is a subset of LoRaWan, LoRa only includes the physical layer definition, and LoRaWan 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,
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Here the LoRa Wireless barrier is hot for selling and first innovated in market.
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LoRa Wireless Barrier
Features
1. With LoRa Wireless Technologies, longer for transmission distance.
2. With wireless transmission design, convenient for installation and operation.
3. Fuzzing logic analysis & advanced signal process Tech, automatically analysis human signals, lesser false alarm.
4. IP66 High standard waterproof performance.
5. Fully-sealed PC Tube adopted, better against dust or water.
6. Low Voltage alert, As soon as voltage lower than 2.9V, the barrier will upload alarm to alarm center.
7. Frequency: default LoRa 433Mhz , for LoRa 868MHZ is optional.
8. Lightning protection design, better avoid struck by lightning.
Parameters
|
Model |
ABI-10W（432L） |
ABI-10W（654L） |
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Beams |
2 Beams |
4 Beams |
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Detection method |
Block adjacent 2beams , give out alarms. |
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Trigger time |
≥40ms |
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Working current |
TX＜100uA |
TX＜120uA |
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RX＜150uA |
RX＜150uA |
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Battery life |
3 years |
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Max detection distance |
10m |
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communication method |
LoRa（433MHz） |
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Wireless transmission distance |
2000m in the open air. |
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Water-proof grade |
IP66 |
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Dimensions（mm） |
39*39*462mm |
39*39*648mm |
For more items, please visit this link: https://www.aleansecurity.com/alarm-systems/iot-sensors/
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