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An Internet of Things household electrical appliance interconnection system based on PLC

An interconnection system and Internet of Things technology, which is applied in the field of PLC-based Internet of Things home appliance interconnection system, can solve problems such as limitations, inability to transmit signals, and large attenuation of data information transmission, so as to achieve flexible transformation, improve anti-interference ability, and wide application foreground effect

Active Publication Date: 2014-02-19
HAIER GRP CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, PLC (Power Line Communicaiton, power line carrier communication) is rarely used in the field of IoT home appliances. The reason is that IoT home appliances require high anti-interference, high transmission speed, high operation stability, and moderate transmission distance.
While the carrier signal is transmitted on the power line in the home, the carrier signal will be greatly attenuated after passing through some air switches (the air switches mentioned in this article refer to the air switches that attenuate the transmission signal greatly) and other equipment. , the interference of other devices on the line will also have a certain impact on the carrier signal, resulting in a large attenuation during data information transmission, and the operation stability of digital home appliances will be seriously affected
[0003] In addition, when the signals belong to the three phases A, B, and C on the power line, the signals between the three phases often cannot be transmitted.
At the same time, when users request to add new carrier devices, they need to automatically form the same network system with the new devices and old home appliances on site, and the previous solutions cannot meet the requirements well.
Thus limiting the current application of power line carrier communication in IoT home appliances

Method used

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  • An Internet of Things household electrical appliance interconnection system based on PLC
  • An Internet of Things household electrical appliance interconnection system based on PLC

Examples

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Embodiment 1

[0032] figure 1 It is a schematic structural diagram of the PLC-based Internet of Things home appliance interconnection system described in Embodiment 1 of the present invention, as figure 1 As shown, the system includes: a power line 100, an air switch 200, a first signal converter 300, a first home appliance 400, a second signal converter 500, a second home appliance 600, a home appliance controller 700, and a signal coupler 800 and server 900.

[0033] The air switch 200 is arranged on the power line 100 . Generally, the power line 100 first passes through an air switch 200 after entering the home, and then the output end of the air switch 200 is connected in parallel with multiple loads, such as TVs and washing machines. like figure 1 As shown, the power line 100 generally has three phases A, B, and C, and a neutral line N before entering the home; after entering the home, the live line L and the neutral line N are output from the air switch 200 .

[0034] The first si...

Embodiment 2

[0048] figure 2 It is a schematic structural diagram of the PLC-based Internet of Things home appliance interconnection system described in Embodiment 2 of the present invention, as figure 2 As shown, the system described in this embodiment is basically the same as the system described in Embodiment 1, the only difference being that the signal coupler 800 in this embodiment uses an inductor, and generally includes two inductors. The two inductors complete the transmission of the high-frequency carrier signal through electromagnetic induction to enhance the signal strength.

[0049] Specifically, when the first signal converter 300 and the first home appliance 400 are located on both sides of the air switch 200 on the power line 100, the first inductance of the signal coupler 800 is wound On the power line at one side of the air switch 200, a second inductor is wound on the power line at the other side of the air switch 200, and the first inductor is connected to the second ...

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Abstract

The invention discloses an Internet of Things household electrical appliance interconnection system based on PLC. In the system, an air switch is disposed on a power line; a first signal converter is connected with the power line and is used for achieving conversion between digital signals and carrier signals; a first household electrical appliance is connected with the power line and is used for receiving the carrier signals, executing a corresponding work task according to the carrier signals, and transmitting the operation status information of the first household electrical appliance itself via the power line; when the first signal converter and the first household electrical appliance are disposed on the two sides of the air switch on the power line, a signal coupler is also provided and connected with the power lines on the two sides of the air switch; and the signal coupler employs a capacitor and an inductor. With the signal coupler, the system overcomes a problem of attenuation when the carrier signals pass air switch or out-phase power line transmission. In addition, a software mode resolves an automatic network forming problem of new devices, achieves flexible conversion of a modulation mode, and enhances the anti-interference capability of the carrier signals.

Description

technical field [0001] The invention relates to the technical field of the Internet of Things, in particular to a PLC-based Internet of Things home appliance interconnection system. Background technique [0002] At present, PLC (Power Line Communication, power line carrier communication) is rarely used in the field of IoT home appliances. The reason is that IoT home appliances require high anti-interference, high transmission speed, high operation stability, and moderate transmission distance. While the carrier signal is transmitted on the power line in the home, the carrier signal will be greatly attenuated after passing through some air switches (the air switches mentioned in this article refer to the air switches that attenuate the transmission signal greatly) and other equipment. , The interference of other equipment on the line will also have a certain impact on the carrier signal, resulting in a large attenuation during data information transmission, and the operation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04B3/54
Inventor 陈艳丽刘绪强张传民
Owner HAIER GRP CORP
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