Direct-current low-voltage power line carrier module

Abstract

The utility model relates to the technical field of communication, in particular to a direct-current low-voltage power line carrier module, and aims to improve data transmission stability and communication efficiency in a low-voltage power line environment by optimizing the design of an input circuit, a coupling circuit, a low-voltage circuit line communication module, an MCU (Microprogrammed Control Unit) and an output circuit. According to the utility model, the low-voltage power line communication technology is innovated and optimized, so that the reliability, distance and anti-interference capability of data transmission are remarkably improved, and technical support is provided for wide application of low-voltage power line communication in a modern intelligent control system.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technical field, concretely relates to a direct current low voltage power carrier wave module, especially suitable for signal transmission and data communication under low voltage power line environment, can be widely applied to intelligent house, building automation, industrial automation control and power grid infrastructure etc. BACKGROUND

[0002] With the rapid development of intelligent house, building automation and industrial control field, low voltage power line communication technology (PLC) gradually becomes an important communication means. PLC technology realizes data transmission through power line, has the advantages of simple installation and low cost. However, the existing PLC technology still faces some technical challenges under low voltage power line environment, such as limited communication distance, power line interference, signal attenuation and other problems, which affect the stability and efficiency of the communication system.

[0003] When data transmission is carried out on low voltage power line, it is often affected by electromagnetic interference of power equipment, fluctuating voltage and current noise, resulting in unstable signal transmission quality. Especially in long distance transmission or large load current, the communication quality is more difficult to guarantee. Therefore, an improved low voltage power line communication module is needed to improve the stability of communication, anti-interference ability and ensure the reliability of long distance data transmission.

[0004] In order to cope with these challenges, the utility model provides a low voltage circuit line communication module, which can effectively improve the data communication quality under low voltage power line environment, reduce the influence of power line noise on signal, and meet the demand of modern intelligent control system for efficient and stable communication through optimizing circuit design and signal modulation and demodulation technology. SUMMARY

[0005] The utility model provides a direct current low voltage power carrier wave module, through the design of optimizing input circuit, coupling circuit, low voltage circuit line communication module, MCU and output circuit, aims at improving the data transmission stability and communication efficiency under low voltage power line environment.

[0006] The technical scheme of the utility model is as follows: a direct current low voltage power carrier wave module, comprising:

[0007] Input circuit: the input circuit is connected with external power supply, and is suitable for low voltage power supply of DC 10-60V;

[0008] Coupling circuit: the coupling circuit is connected with the input circuit, and is used for coupling data signal and direct current power signal, and isolating direct current;

[0009] Low-voltage power line communication module: the low-voltage power line communication module is connected with the coupling circuit and the MCU, and is used for modulating and demodulating data signals;

[0010] Output circuit: the output circuit is connected with the low-voltage power line communication module.

[0011] Preferably, it further comprises an MCU, the MCU is connected with the low-voltage power line communication module and the output circuit, and is used for receiving and processing communication data.

[0012] Preferably, the input circuit comprises a high-voltage difference LDO power supply chip and a filter capacitor, and is suitable for an input voltage range of DC 10-60V.

[0013] Preferably, the coupling circuit comprises at least two coupling capacitors, and is used for coupling signals to the power line.

[0014] Preferably, the low-voltage power line communication module supports multi-device communication of a maximum of 256 nodes.

[0015] Preferably, the output circuit comprises a voltage stabilizing diode and a filter inductor.

[0016] Preferably, the communication rate of the module is 9600bps, the data format is 1-bit start bit, 8-bit data bit and 1-bit stop bit, and there is no parity check.

[0017] Preferably, the module supports power compensation by increasing nodes to improve the problem of unstable communication caused by line attenuation.

[0018] The low-voltage power line communication module of the application realizes efficient and stable data transmission in a low-voltage power line environment by optimizing the design of the input circuit, the coupling circuit, the low-voltage power line communication module and the output circuit. The action process is as follows:

[0019] Power input and voltage stabilization: the external power supply (DC 10-60V) is first connected to the module through the input circuit. The input circuit comprises a high-voltage difference LDO power supply chip, which is used for adjusting the input voltage to a stable power supply voltage (such as 5V). The filter capacitor is used to remove noise in the input power supply, so as to ensure stable voltage supply and support normal work of the module.

[0020] Signal coupling and isolation: the voltage-stabilized power supply is coupled with the data signal of the external control device through the coupling circuit. The coupling circuit uses coupling capacitors to transmit data signals to the power line, while ensuring that the direct-current power supply signal in the power line is isolated from the alternating-current data signal, so as to avoid the interference of power supply noise in the power line on the signal.

[0021] Data modulation and demodulation: The data signal is modulated and demodulated by the low-voltage circuit line communication module. This module converts the transmitted data signal into a signal suitable for power line transmission through the modulator, and restores the received signal to the original data through the demodulator. This process is based on the RS-485 communication interface, ensuring efficient and stable data transmission.

[0022] Signal output and transmission: The demodulated data is transmitted from the low-voltage circuit line communication module to the output circuit. The output circuit smoothens the signal output through the voltage stabilizing diode and filter inductor, ensuring the stability and anti-interference ability of the output signal. The output circuit transmits the processed signal to the external control device to perform specific control tasks.

[0023] Multi-node communication and expansion: This module supports up to 256 nodes, suitable for smart home, building automation, industrial control and other systems. Each node can independently receive and send data, ensuring stable communication between multiple devices.

[0024] System control and data processing (through MCU): In this invention, the MCU is responsible for receiving and analyzing the demodulated data from the low-voltage circuit line communication module, and executing actions according to specific control logic. For example, the MCU can control the switching of devices, adjust parameters (such as brightness, temperature, speed, etc.) and feedback the results to the control system. The tasks of the MCU are only described in the dependent claims as additional functions to support communication and control.

[0025] This invention transmits data signals through low-voltage power lines, ensuring efficient and stable communication in low-voltage power line environments. By optimizing signal coupling, modulation and demodulation, and output circuit, the module can effectively deal with noise, interference and voltage fluctuations in the power line, and provide a reliable data transmission channel. In addition, the system can be expanded to multiple nodes, suitable for large-scale intelligent control and automation applications.

[0026] The low-voltage circuit line communication module provided by the utility model, through the optimization design of input circuit, coupling circuit, low-voltage circuit line communication module, MCU and output circuit, can realize efficient and stable data communication in low-voltage power line environment, and effectively overcome the shortcomings of traditional PLC technology in low-voltage power line transmission. The specific technical effects are as follows:

[0027] Improve communication stability: This invention optimizes the voltage stabilizing power supply and filter circuit in the input circuit, ensuring stable power supply support in the DC 10-60V low-voltage range. This design effectively reduces the impact of power fluctuations and noise on communication signals, thereby improving the communication stability of the entire system.

[0028] Enhanced Anti-interference Capability: The coupling circuit effectively isolates the DC signal in the power line, so that the noise and current fluctuations in the power line do not directly affect data transmission. At the same time, the low-voltage circuit line communication module realizes efficient signal transmission through modulation and demodulation technology, greatly reducing the influence of power line interference.

[0029] Extended communication distance: The low-voltage circuit line communication module of the present application supports a communication distance of 500 meters, far exceeding the limitations of traditional PLC technology. Through the optimization of signal modulation and demodulation, the communication signal maintains a low attenuation during long-distance transmission, ensuring stable data transmission over long distances.

[0030] Support for multi-node communication: The module supports up to 256 nodes of device connection, suitable for large-scale smart home, building automation, industrial control and other systems. Each node can independently receive and send data, effectively improving the scalability and flexibility of the system.

[0031] Low cost, easy to implement: Since the present application uses existing low-voltage power lines as data transmission media, there is no need to lay additional communication lines, greatly reducing installation and wiring costs. In addition, the module has a simple structure and compact design, easy to integrate into various control systems.

[0032] Improve system energy efficiency: The present application reduces power consumption on the power line through efficient power management and communication signal optimization, improving the overall energy efficiency of the system, especially suitable for energy-saving smart home and industrial control fields.

[0033] The utility model innovatively optimizes the low-voltage power line communication technology, significantly improves the reliability, distance and anti-interference capability of data transmission, and provides technical support for the wide application of low-voltage power line communication in modern intelligent control systems. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is the overall structure schematic diagram of the utility model;

[0035] Figure 2 is the circuit schematic diagram of the circuit line communication module of the utility model. DETAILED DESCRIPTION

[0036] Example 1:

[0037] A DC low-voltage power carrier module, comprising

[0038] Input circuit: The input circuit is connected with the external power supply, suitable for DC 10-60V low-voltage power supply;

[0039] Coupling circuit: the coupling circuit is connected with the input circuit, and is used for coupling the data signal with the direct current power signal and isolating the direct current;

[0040] Low-voltage power line communication module: the low-voltage power line communication module is connected with the coupling circuit and the MCU, and is used for modulating and demodulating the data signal;

[0041] Output circuit: the output circuit is connected with the low-voltage power line communication module.

[0042] Embodiment 2:

[0043] The difference between this embodiment and embodiment 1 is that this embodiment further comprises the following technical features:

[0044] It further comprises an MCU, which is connected with the low-voltage power line communication module and the output circuit, and is used for receiving and processing the communication data

[0045] The input circuit comprises a high-voltage difference LDO power chip and a filter capacitor, and is suitable for an input voltage range of DC 10-60V.

[0046] Preferably, the input circuit comprises a high-voltage difference LDO power chip and a filter capacitor, and is suitable for an input voltage range of DC 10-60V.

[0047] Preferably, the coupling circuit comprises at least two coupling capacitors, which are used for coupling the signal to the power line.

[0048] Preferably, the low-voltage power line communication module supports multi-device communication of a maximum of 256 nodes.

[0049] Preferably, the output circuit comprises a voltage stabilizing diode and a filter inductor.

[0050] Preferably, the communication rate of the module is 9600bps, the data format is 1-bit start bit, 8-bit data bit, 1-bit stop bit, and there is no parity check.

[0051] Preferably, the module supports power compensation by increasing nodes to improve the communication instability problem caused by line attenuation.

Claims

1. A DC low-voltage power line carrier module, characterized in that: include Input circuit: The input circuit is connected to an external power supply and is suitable for low-voltage power supply of DC10-60V; Coupling circuit: The coupling circuit is connected to the input circuit and is used to couple the data signal to the DC power supply signal and isolate the DC power. Low-voltage power line communication module: The low-voltage power line communication module is connected to the coupling circuit and MCU and is used for modulation and demodulation of data signals; Output circuit: Output circuit and low-voltage power line communication module.

2. The DC low-voltage power line carrier module according to claim 1, characterized in that, It also includes an MCU, which is connected to a low-voltage power line communication module and output circuit to receive and process communication data.

3. The DC low-voltage power line carrier module according to claim 1, characterized in that, The input circuit includes a high-differential-voltage LDO power supply chip and a filter capacitor, and is suitable for an input voltage range of DC10-60V.

4. The DC low-voltage power line carrier module according to claim 1, characterized in that, The coupling circuit includes at least two coupling capacitors for coupling signals to the power line.

5. The DC low-voltage power line carrier module according to claim 1, characterized in that, The low-voltage power line communication module supports multi-device communication with up to 256 nodes.

6. The DC low-voltage power line carrier module according to claim 1, characterized in that, The output circuit includes a Zener diode and a filter inductor.

7. The DC low-voltage power line carrier module according to claim 1, characterized in that, The module has a communication rate of 9600bps, and the data format consists of 1 start bit, 8 data bits, and 1 stop bit, with no parity check.

8. The DC low-voltage power line carrier module according to claim 1, characterized in that, The module supports improving communication instability caused by line attenuation by adding node power compensation.

Images