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Data communication using wires? [Copy link]

 

Today I saw a colleague testing a router. For product use, this router has a new technology that can communicate data through wires. I think this technology is quite powerful. If you need to communicate through wires, then you need to modulate and demodulate the power signal? What do you think of this wire communication? Do you think it is a gimmick or real strength?

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Because the high-frequency carrier signal needs to be injected at the zero-crossing point of the power waveform, the zero-crossing quality will be introduced, which is equivalent to introducing high-frequency harmonics on the power line, which has a great impact on some high-frequency devices on the power line.   Details Published on 2023-10-11 12:53
 
 

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Power line carrier is not the right approach, but I think wrapping the optical cable into the cable should be possible.

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Then the wiring must be done in advance, and isn’t it a bit bad to put strong and weak electricity together?  Details Published on 2023-10-11 09:22
 
 
 

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Two-bus technology similar to fire protection

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Power line carrier?

It seems like many years ago, when the company was small, I used this thing. When the cleaning lady was charging the electric car battery on the wall, the whole company had no network.

Just unplug it. Other people's high-power chargers will also affect people nearby. Later, I stopped using them.

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Well, it seems that this is not a new technology, but I just don’t know much about it. . .  Details Published on 2023-10-11 09:23
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By utilizing power lines for data transmission, applications such as broadband access, smart home, and energy management can be realized.

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New stuff. I didn't know it before. Is it related to Star Flash?
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Power line carrier has been around for more than 10 years and has been used in the power information collection industry. From the previous narrowband carrier, to the later broadband carrier, to the current HPLC high-speed broadband carrier, and the dual-mode (HPLC+micropower wireless) that is being promoted now, the advantage is that it uses the power line directly, without the need to run a separate  Details Published on 2023-10-11 09:23
Power line carrier has been around for more than 10 years and has been used in the power information collection industry. From the previous narrowband carrier, to the later broadband carrier, to the current HPLC high-speed broadband carrier, and the dual-mode (HPLC+micropower wireless) that is being promoted now, the advantage is that it uses the power line directly, without the need to run a separate  Details Published on 2023-10-10 08:45
 
 
 

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Nowadays, household electricity meters all communicate in this way to achieve remote meter reading. In the past, wireless meter reading was done for a period of time, using LORA, but now it has been changed to power line carrier meter reading.

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I think LoRa still has limitations, and power line carrier can solve these limitations.  Details Published on 2023-10-11 09:24
 
 
 

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Azuma Simeng posted on 2023-10-10 07:16 New stuff. I didn't know about it before. Is it related to Star Flash?

Power line carrier has been around for more than 10 years and has been used in the power information collection industry, from narrowband carrier to broadband carrier, to HPLC high-speed broadband carrier, and now the dual-mode (HPLC + micro-power wireless) being promoted.

The advantage is that it uses power lines directly without running separate lines. The disadvantage is that it is sensitive to power quality and it itself will also affect the power quality.

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[It will also affect the power quality.] What aspects of the power supply will be affected?  Details Published on 2023-10-11 09:25
 
 
 

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Powerline cats have been around for a few years, but they were later eliminated because they were not easy to use!
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bigbat posted on 2023-10-9 16:50 Power line carrier should not be the right way. I think wrapping the optical cable into the cable should be possible.

Then the wiring must be done in advance, and isn’t it a bit bad to put strong and weak electricity together?

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wsmysyn posted on 2023-10-9 20:10 Power line carrier? It seems to have been many years. Seven or eight years ago, when the company was small, I used this thing. When the cleaning lady was charging the electric car battery on the wall, the whole...

Well, it seems that this is not a new technology, but I just don’t know much about it. . .

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The disadvantages are obvious, which may be the reason why it is not well known by the public. I feel that this is not very practical for daily use at home. There are many problems. The company also bought branded products before, and later bought more expensive ones. When encountering batteries and high-power equipment, no matter how expensive the power cat is, it is useless. Other industry problems  Details Published on 2023-10-11 09:54
 
 
 

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Azuma Simeng posted on 2023-10-10 07:16 New stuff. I didn't know about it before. Is it related to Star Flash?

Haha, it seems we are of the same generation and have never understood each other.

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hjl2832 Published on 2023-10-10 08:12 Nowadays, the electric meters at home all communicate in this way to realize remote meter reading. In the past, wireless meter reading was done for a period of time, using LORA, but now it has been changed to electric...

I think LoRa still has limitations, and power line carrier can solve these limitations.

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Posted by Extreme Zero on 2023-10-10 08:45 Power line carrier has been around for more than 10 years and has been used in the power information collection industry, from the previous narrowband carrier, to the later broadband carrier, to the current HPLC ...

[It will also affect the power quality.] What aspects of the power supply will be affected?

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Because the high-frequency carrier signal needs to be injected at the zero-crossing point of the power waveform, the zero-crossing quality will be introduced, which is equivalent to introducing high-frequency harmonics on the power line, which has a great impact on some high-frequency devices on the power line.  Details Published on 2023-10-11 12:53
 
 
 

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wangerxian posted on 2023-10-11 09:23 Well, it doesn’t seem to be a new technology, it’s just that I don’t have much knowledge. . .

The obvious shortcomings may also be a reason why it is not well known to the public.

I feel that this is not very practical for daily use at home. There are many problems. I used to buy branded products at work, and later I bought more expensive ones. When it comes to batteries and high-power equipment, no matter how expensive the power cat is, it is useless.

Other industries do not have much problem, such as remote meter reading.

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Does that mean that there are various high-frequency signals transmitted on the 220 city wires? Wouldn't it be a huge current surge and everything would be gone?
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Power line carrier is only used in the substation area, that is, the secondary side of the transformer. When there is frequency fluctuation and other poor power quality, the communication will be disconnected. Power line carrier is used for meter reading at midnight. At that time, the factory information and interference are small.  Details Published on 2023-10-11 12:51
 
 
 

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Azuma Simeng posted on 2023-10-11 12:28 Does this mean that there are still various high-frequency signal transmissions in the 220 city wires? Wouldn't it be a large current surge and everything would be gone?

Power line carrier is only used in the substation area, that is, the secondary side of the transformer. When there is frequency fluctuation and other poor power quality, the communication will be disconnected. Power line carrier is used for meter reading at midnight. At that time, the factory information and interference are small.

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wangerxian posted on 2023-10-11 09:25 [It also affects the power quality] What aspects of the power supply will be affected?

Because the high-frequency carrier signal needs to be injected at the zero-crossing point of the power waveform, the zero-crossing quality will be introduced, which is equivalent to introducing high-frequency harmonics on the power line, which has a great impact on some high-frequency devices on the power line.

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