CN214205528U - Power line carrier transmission device - Google Patents
Power line carrier transmission device Download PDFInfo
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- CN214205528U CN214205528U CN202120163948.4U CN202120163948U CN214205528U CN 214205528 U CN214205528 U CN 214205528U CN 202120163948 U CN202120163948 U CN 202120163948U CN 214205528 U CN214205528 U CN 214205528U
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- carrier transmission
- receiving
- power line
- power supply
- line carrier
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Abstract
The utility model provides a power line carrier transmission device, including transmitting equipment and receiving arrangement, transmitting equipment includes sending terminal MCU and modulation circuit, receiving equipment includes receiving terminal MCU and demodulation circuit, sending terminal MCU's output with modulation circuit's input is connected, modulation circuit's output inserts the main power supply line, demodulation circuit's input inserts the main power supply line, demodulation circuit's output with receiving terminal MCU's input is connected. The utility model also provides a power line carrier transmission method. The beneficial effects of this utility are: the power line carrier transmission data is realized, the cost is greatly reduced, and the price threshold of use is greatly reduced.
Description
Technical Field
The utility model relates to a power line carrier especially relates to a power line carrier transmission device.
Background
With the increasing use of electronic information and intelligent products, data exchange is required in places where it is inconvenient to connect data lines, where wireless signals are transmitted and attenuated, and where it is severe, for example: the street lamp is used in the places of the existing street lamp, the household centralized control intelligent electric appliances, underwater lamps, water and electricity meter reading and the like. In consideration of convenience of construction and wiring cost, a power carrier is undoubtedly a better choice.
At present, the existing power carrier transmission device is characterized in that a high-frequency signal is loaded into a low-frequency or direct-current line on a power line, the loaded voltage is low and is easily interfered by an interference signal, so that the communication error rate is high, and high cost is needed to process the signal in order to improve the error rate, so that the product cost is high, and the wide application is difficult.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a power line carrier transmission device and a method.
The utility model provides a power line carrier transmission device, including transmitting equipment and receiving arrangement, transmitting equipment includes sending terminal MCU and modulation circuit, receiving equipment includes receiving terminal MCU and demodulation circuit, sending terminal MCU's output with modulation circuit's input is connected, modulation circuit's output inserts the main power supply line, demodulation circuit's input inserts the main power supply line, demodulation circuit's output with receiving terminal MCU's input is connected.
As a further improvement of the utility model, the output end of the receiving end MCU is connected with a user load.
As a further improvement of the present invention, neither the transmitting device nor the receiving device includes a signal amplifying circuit.
The beneficial effects of this utility are: through the scheme, the data transmission of the power line carrier is realized, the cost is greatly reduced, and the price threshold of use is greatly reduced.
Drawings
Fig. 1 is a schematic diagram of a power carrier transmission apparatus according to the present invention.
Fig. 2 is a flowchart of a main process of the power carrier transmission apparatus according to the present invention.
Fig. 3 is a flow chart of a serial port receiving interrupt response procedure of the power carrier transmission apparatus according to the present invention.
Detailed Description
The present invention will be further described with reference to the following description and embodiments.
As shown in fig. 1, a power carrier transmission apparatus includes a sending device 100 and a receiving device 200, where the sending device 100 includes a sending end MCU7 (MCU: Microcontroller Unit, micro control Unit, also called as a "microcomputer" or a "single chip") and a modulation circuit 2, the receiving device 200 includes a user load 6, a receiving end MCU8 and a demodulation circuit 4, an output end of the sending end MCU7 is connected to an input end of the modulation circuit 2, an output end of the modulation circuit 2 is connected to a main power supply line 1, an input end of the demodulation circuit 4 is connected to the main power supply line 1, an output end of the demodulation circuit 4 is connected to an input end of the receiving end MCU8, and an output end of the receiving end MC8 is connected to the user load 6.
The main power supply line 1 supplies the modulation circuit 2, the demodulation circuit 4, the user load 6 and the transmitting-end MCU7 for simultaneous use.
The control instruction of the sending end MCU7 transmits a voltage signal higher than that of the main power supply line 1 to the main power supply line 1 through the modulation circuit 2, and transmits the voltage signal to the demodulation circuit 4 through the line of the main power supply line 1, and the demodulation circuit 4 demodulates the carrier signal and then sends a control instruction to drive the user load 6 through the receiving end MCU8, so that the control is realized.
Because the signal transmission process avoids the interference signal dense area 5, the signal transmission reliability is greatly improved, the modulation and demodulation cost is reduced, and the transmitted signal can be directly identified by a common MCU chip without amplification processing, so that the demodulation cost is further reduced, in other words, the utility model realizes power carrier communication by using little modulation and demodulation cost.
As shown in fig. 2, after initialization, i.e., related settings and function definitions, the sending device and the receiving device repeatedly call a keyboard scanning program, perform key detection in the keyboard scanning program, and execute a corresponding command or a related function if a key is pressed.
As shown in fig. 3, the processing mode of the sending device and the receiving device for sending and receiving data by the serial port is that whether the serial port sends data of a character frame completely or not adopts a method of inquiring a flag bit, but whether the serial port receives data of a character frame completely or not adopts an interrupt mode, and the terminal mode comprises the following steps: entering an interrupt response, judging whether a receiving interrupt mark is 1, if so, clearing 0 the receiving interrupt mark, adding 1 to the serial port reading times, and storing data to an array; if the serial port is judged to be not read, the return is interrupted, whether the serial port is read for 4 times is judged, and if the serial port is judged to be not read, the return is interrupted; if the serial port reading time is judged to be 0; judging whether the data is sent to the local computer or not, if not, interrupting the return; if the judgment result is yes, analyzing the received command or data and executing relevant operation, and finally interrupting the return.
The utility model also provides a power carrier transmission device, on the basis of the power carrier transmission device, a higher voltage is superposed on the basis of the original power supply voltage for modulation, and the voltage transmitted to the demodulation equipment is high enough, so that the demodulation cost does not pass through links such as signal amplification, and the demodulation cost is reduced; and because the influence of line interference signals is greatly reduced after the voltage is increased, the demodulation cost is further reduced.
This practicality is at first determined a supply voltage, give the modulation board to some supplies power of supply voltage, another part supplies power for the modulation board, the modulation board is done the power and is stepped up the processing, improve about 3V as signal power, supply voltage does step-down processing simultaneously, make the available 3-5V power of inboard chip for components and parts such as chips power supply, the signal of modulation main chip with the modulation is through enlargeing back drive signal power, signal power carries out signal and power transmission and gives the modulation board on adding power supply line in addition.
After receiving the power supply with the modulation signal, the demodulation board collects the modulation signal and supplies the modulation signal to the demodulation signal end, and in addition, the main power supply is subjected to voltage reduction and is supplied to the demodulation board for use.
In the whole transmission process, the adopted transmission voltage difference is very high and far exceeds an interference dense voltage area, so that the demodulation cost is greatly reduced.
The utility model provides a pair of power line carrier transmission device and method has following advantage:
1. the demodulation cost is reduced due to the high pressure difference;
2. the high pressure difference reduces the influence of interference and improves the transmission reliability;
3. the power carrier is realized with low cost.
4. The carrier product is applied to the civil field, and the application range is greatly enlarged.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the present invention be limited to the specific embodiments set forth herein. For those skilled in the art to which the present invention pertains, a plurality of simple deductions or replacements can be made without departing from the present invention, and all of them should be considered as belonging to the protection scope of the present invention.
Claims (3)
1. A power carrier transmission apparatus, characterized in that: the receiving device comprises a receiving end MCU and a demodulation circuit, the output end of the transmitting end MCU is connected with the input end of the modulation circuit, the output end of the modulation circuit is connected with a main power supply line, the input end of the demodulation circuit is connected with the main power supply line, and the output end of the demodulation circuit is connected with the input end of the receiving end MCU.
2. The power carrier transmission apparatus according to claim 1, wherein: and the output end of the receiving end MCU is connected with a user load.
3. The power carrier transmission apparatus according to claim 1, wherein: and the transmitting equipment and the receiving equipment do not comprise signal amplification circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120163948.4U CN214205528U (en) | 2021-01-21 | 2021-01-21 | Power line carrier transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120163948.4U CN214205528U (en) | 2021-01-21 | 2021-01-21 | Power line carrier transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214205528U true CN214205528U (en) | 2021-09-14 |
Family
ID=77637071
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120163948.4U Active CN214205528U (en) | 2021-01-21 | 2021-01-21 | Power line carrier transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214205528U (en) |
-
2021
- 2021-01-21 CN CN202120163948.4U patent/CN214205528U/en active Active
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