CN203523077U - A Street Lamp Control System Based on Power Line Carrier Communication - Google Patents

Abstract

The utility model discloses a road lamp control system based on the power line carrier communication. The road lamp control system based on the power line carrier communication consists of three parts, namely a master control circuit, a carrier signal processing circuit and a power source in a connection way. The master control circuit consists of a minimum system circuit of a single chip microcomputer, a display circuit and a serial communication circuit in a connection way. The minimum system circuit of the single chip microcomputer comprises an integrated block U3. The display circuit comprises an integrated block U4. The serial communication circuit comprises an integrated block U6. The carrier signal processing circuit consists of a zero crossing detection circuit, a transmitting-receiving circuit and a coupling circuit in a connection way. The zero crossing detection circuit comprises integrated blocks U1 and U2 .The transmitting-receiving circuit comprises integrated blocks U8 and U9. The coupling circuit comprises a transformer T1. The power source consists of a direct current circuit. Without the laying of special communication lines, the road lamp control system based on the power line carrier communication has the advantages of low cost, easiness in management and maintenance and the like. Under the condition of not erecting special signal lines, the system can be applied to controlling and monitoring road lamps and can also be used for realizing the controllable transformation of a part of original road lamps.

Description

A Street Lamp Control System Based on Power Line Carrier Communication

technical field

The utility model relates to a street lamp control system, in particular to a street lamp control system based on power line carrier communication.

Background technique

With the continuous development of society, more and more lighting controls have made the work of the management department more and more serious, and the management and maintenance methods of the original street lighting system have been unable to meet people's requirements for the lighting quality, maintenance level and energy saving of the street lighting system. The power line carrier communication uses the ubiquitous power grid to realize data transmission without rewiring. Measure the voltage, current and power of street lamps, feed back the fault information of street lamps, and optimize the lighting strategy through the analysis of the reported information to achieve energy saving. The street lamp control system involved in this patent can monitor the operation of street lamps in real time and transmit data information through existing power lines, effectively realizing the remote collection and monitoring of street lamp information. the

Utility model content

In order to solve the above problems, the purpose of this utility model is to provide a street lamp control system based on power line carrier communication.

The notification system of the sample processing plant is to achieve the above-mentioned technical purpose and achieve the above-mentioned technical effect. The utility model is realized through the following technical solutions:

A street lamp control system based on power line carrier communication, which is composed of a main control circuit, a carrier signal processing circuit and a power supply;

The main control circuit is composed of the minimum system circuit of the single-chip microcomputer, the display circuit, and the serial communication circuit. The minimum system circuit of the single-chip microcomputer includes integrated block U3, the display circuit includes integrated block U4, and the serial communication circuit includes integrated block U6;

The carrier signal processing circuit is composed of a zero-crossing detection circuit, a transceiver circuit, and a coupling circuit. The zero-crossing detection circuit includes integrated blocks U1 and U2, the transceiver circuit includes integrated blocks U8 and U9, and the coupling circuit includes a transformer T1;

The power supply is composed of a DC voltage stabilizing circuit, and the DC voltage stabilizing circuit includes integrated blocks U5 and U7.

Further, the port connection of integrated block U3 is as follows:

Port 1 of integrated block U3 is connected in series with resistor R3 to port 40 of U3;

Port 2 of manifold U3 is connected to port 2 of manifold U1;

Port 3 of manifold U3 is connected to port 11 of manifold U6;

Port 4 of manifold U3 is connected to port 12 of manifold U6;

Port 9 of integrated block U3 connects resistor R1 to power supply VCC2, and at the same time connects capacitor C1 to ground;

Port 10 of manifold U3 is connected to port 10 of manifold U8;

Port 11 of manifold U3 is connected to port 9 of manifold U8;

Connect the No. 18 port of the integrated block U3 to the ground after connecting the capacitor C3;

The No. 19 port of the integrated block U3 is connected to the ground after the capacitor C2, and the crystal oscillator Y1 is connected between the No. 19 port and the No. 18 port of U3;

Port 20 of the integrated block U3 is grounded;

The No. 21 port of the integrated block U3 is connected in series with the resistor R14 to the base of the transistor Q1;

The No. 22 port of the integrated block U3 is connected in series with the resistor R15 to the base of the transistor Q2;

The No. 23 port of the integrated block U3 is connected in series with the resistor R16 to the base of the transistor Q3;

The No. 24 port of the integrated block U3 is connected in series with the resistor R17 to the base of the transistor Q4;

Port 32 of integrated block U3 is connected in series with resistor R13 to port 3 of integrated block U4;

Port 33 of integrated block U3 is connected in series with resistor R12 to port 5 of integrated block U4;

Port 34 of integrated block U3 is connected in series with resistor R11 to port 10 of integrated block U4;

Port No. 35 of integrated block U3 is connected in series with resistor R10 to port No. 1 of integrated block U4;

Port 36 of integrated block U3 is connected in series with resistor R9 to port 2 of integrated block U4;

Port 37 of integrated block U3 is connected in series with resistor R8 to port 4 of integrated block U4;

Port 38 of integrated block U3 is connected in series with resistor R7 to port 7 of integrated block U4;

The No. 39 port of the integrated block U3 is connected in series with the resistor R6 to the No. 11 port of the integrated block U4.

Further, the port connection of integrated block U4 is:

Port 1 of manifold U4 is connected in series with resistor R10 to port 35 of manifold U3;

Port No. 2 of integrated block U4 is connected in series with resistor R9 to port No. 36 of integrated block U3;

Port 3 of integrated block U4 is connected in series with resistor R13 to port 32 of integrated block U3;

Port 4 of integrated block U4 is connected in series with resistor R8 to port 37 of integrated block U3;

The No. 5 port of the integrated block U4 is connected in series with the resistor R12 to the No. 33 port of the integrated block U3;

Port 6 of integrated block U4 is connected to the collector of transistor Q4;

The No. 7 port of the integrated block U4 is connected in series with the resistor R7 to the No. 38 port of the integrated block U3;

Port 8 of integrated block U4 is connected to the collector of transistor Q3;

Port 9 of integrated block U4 is connected to the collector of transistor Q2;

Port No. 10 of integrated block U4 is connected in series with resistor R11 to port No. 34 of integrated block U3;

The No. 11 port of the integrated block U4 is connected in series with the resistor R6 to the No. 39 port of the integrated block U3;

The No. 12 port of the integrated block U4 is connected to the collector of the triode Q1;

The emitters of the transistors Q1, Q2, Q3 and Q4 are connected together and connected to the power supply VCC2.

Further, the port connection of the integrated block U6 is as follows:

Port 1 of integrated block U6 is connected in series with capacitor C17 to port 3 of U6;

The No. 2 port of the integrated block U6 is connected in series with the capacitor C13 to the power supply VCC2;

Port 4 of integrated block U6 is connected in series with capacitor C18 to port 5 of U6;

Port 6 of integrated block U6 is connected in series with capacitor C16 to ground;

Port 11 of manifold U6 is connected to port 3 of manifold U3;

Port 12 of manifold U6 is connected to port 4 of manifold U3;

Port 13 of manifold U6 is connected to port 3 of socket J2;

Port 14 of manifold U6 is connected to port 2 of socket J2;

Connect port 15 of integrated block U6 to ground;

The No. 16 port of the integrated block U6 is connected to the power supply VCC2 and the capacitor C11 is connected in series to the ground.

Further, the port connections of integrated blocks U1 and U2 are:

Port 1 of integrated block U2 is connected to power supply VCC2;

The No. 2 port of the integrated block U2 is connected to the No. 1 port of U1 and the resistor R2 is connected in series to the ground;

The No. 3 port of the integrated block U2 is connected to the neutral line of the AC 220V power supply;

The No. 4 port of the integrated block U2 is successively connected in series with the diode D4, and the parallel circuit of the resistors R4 and R5 is connected to the live wire of the AC 220V power supply.

Further, the port connections of integrated blocks U8 and U9 are:

Port 1 of integrated block U8 is connected in series with capacitor C25 to ground;

Port No. 2 of integrated block U8 is connected to one end of the parallel circuit of inductor L1, capacitor C5 and resistor R18;

The No. 3 port of the integrated block U8 is connected to the other end of the parallel circuit of the inductor L1, the capacitor C5 and the resistor R18;

Port No. 4 of integrated block U8 is connected in series with capacitor C24 to ground;

Connect No. 6 port of Manifold U8 to No. 3 port of Manifold U1;

Port 9 of manifold U8 is connected to port 11 of manifold U3;

Port 10 of manifold U8 is connected to port 10 of manifold U3;

Port 13 of manifold U8 is connected to port 2 of manifold U1;

Port 14 of the integrated block U8 is connected to the power supply VCC2;

Port 16 of the integrated block U8 is connected to the power supply VCC2;

The No. 17 port of the integrated block U8 is connected to the ground, and the capacitor C22 is connected between the No. 17 port and the No. 16 port of U8;

The No. 18 port of the integrated block U8 is connected to the power supply VCC2, and the series circuit composed of the resistor R23, the inductors L5, L6, the resistor R28, and the capacitor C33 is connected in series between the No. 18 port of U8 and the No. 5 port of U9, and the common circuit of the inductors L5 and L6 A capacitor C28 is connected in series to the ground, and a common terminal of the inductor L6 and the resistor R28 is connected in series with a capacitor C30 to the ground;

The No. 19 port of the integrated block U8 is connected to the parallel circuit of the resistor R26 and the capacitor C29 to the ground, and the No. 19 port is simultaneously connected to the serial circuit of the capacitor C27 and the resistor R25 to the No. 20 port;

The No. 22 port of the integrated block U8 and the connection end of the capacitor C26 are commonly grounded;

Connect the No. 24 port of the integrated block U8 to the ground after connecting the capacitor C20;

The No. 25 port of the integrated block U8 is connected to the ground after the capacitor C21, and the parallel circuit of the crystal oscillator Y2 and the resistor R22 is connected between the No. 25 port and the No. 24 port of U8;

Port 26 of the integrated block U8 is grounded;

The No. 28 port of the integrated block U8 is connected to the power supply VCC2, and the capacitor C26 is also connected between the No. 28 port of U8 and No. 26;

Connect port 1 of integrated block U9 to ground;

The No. 2 port of the integrated block U9 connects the series circuit of the capacitor C8 and the resistor R20 to the No. 5 port of the transformer T1;

Port 3 of the integrated block U9 is connected to the power supply VCC;

Connect the No. 4 port of the integrated block U9 to the ground after connecting the capacitor C34;

Port No. 5 of integrated block U9 is connected in series with capacitor C33, resistor R28, inductors L6, L5, and resistor R23 to port No. 18 of U8. The common end of inductors L5 and L6 is connected in series with capacitor C28 to ground, and inductors L6 and The common end of the resistor R28 is connected in series with the capacitor C30 to ground;

Connect the No. 6 port of the integrated block U9 to the ground after connecting the capacitor C35;

The No. 7 port of the integrated block U9 is connected to the power supply VCC;

Connect the No. 8 port of the integrated block U9 to the ground after connecting the capacitor C36;

Port 11 of the integrated block U9 is connected to the power supply VCC;

Port 15 of manifold U9 is connected to port 4 of manifold U1;

Port 16 of the integrated block U9 is connected to the power supply VCC;

Connect the No. 17 port of the integrated block U9 to the ground after connecting the capacitor C32;

The No. 19 port of the integrated block U9 is connected to the power supply VCC after connecting the resistor R30, and the No. 19 port of U9 is also connected to the No. 20 and No. 21 ports;

Connect the No. 21 port of the integrated block U9 to the ground after connecting the resistor R29;

Connect port 22 of integrated block U9 to ground;

Connect port 23 of integrated block U9 to ground;

The No. 24 port of the integrated block U9 connects the series circuit of the capacitor C31 and the resistor R27 to the No. 3 port of the transformer T1.

Further, the port connection of transformer T1 is as follows:

The No. 1 port of the transformer T1 is connected to the neutral line of the AC 220V power supply, and the No. 1 port of T1 is connected to the series circuit of the resistors R31 and R21 to the live wire of the AC 220V power supply;

The No. 2 port of transformer T1 is connected in series with capacitor C9 and then connected to the live wire of AC 220V power supply, and the No. 2 port and No. 1 port of T1 have indirect protection diode Z2;

Terminal 4 of transformer T1 is connected to ground;

The No. 5 port of the transformer T1 is connected to the series circuit of R20 and C8 to the No. 2 port of the integrated block U9, the No. 5 port of T1 is connected to the resistor R19, the series circuit of the capacitor C6 and the inductor L2 is connected to the No. 3 port of the integrated block U8, and the T1 Connect protection diode Z1 to ground on port 5;

Port 3 of transformer T1 connects the series circuit of R27 and C31 to port 24 of manifold U9, port 3 of T1 connects resistor R24, the series circuit of capacitor C23 and inductor L4 to port 2 of manifold U8, and T1 Port No. 3 is connected to the protection diode Z3 to the ground, and the common terminal of the capacitor C23 and the resistor R24 is connected to the parallel circuit of the capacitor C7 and the inductor L3 to the common terminal of the capacitor C6 and the resistor R19.

Further, the port connections of integrated blocks U5 and U7 are:

The No. 1 port of the integrated block U5 is connected to the No. 2 port of the rectifier bridge D2, and the No. 1 port of U5 is connected to the capacitor C10 to the ground at the same time;

The No. 2 port of the integrated block U5 is grounded;

The No. 3 port of the integrated block U5 is connected to the power supply VCC, and the No. 3 port of U5 is connected to the parallel circuit of C12 and C14 to the ground at the same time;

Port 1 of the integrated block U7 is grounded;

The No. 2 port of the integrated block U7 is connected to the power supply VCC2, and the No. 2 port of U7 is simultaneously connected to the parallel circuit of C15 and C19 to the ground;

Port 3 of the integrated block U7 is connected to the power supply VCC;

Connect No. 1 port of rectifier bridge D2 to No. 3 port of power socket J1;

The No. 3 port of the rectifier bridge D2 is connected to the No. 1 port of the power socket J1;

Port 4 of the rectifier bridge D2 is grounded.       

The working principle of the utility model is:

The computer sends the control command to the single-chip microcomputer through the serial communication circuit, and the single-chip microcomputer displays the content of the command on the digital tube, and amplifies the command through a low-pass filter and a power amplifier circuit. The amplified signal is connected to the power line through a coupling transformer, and passed through the power line After receiving the instruction, the street lamp controller will make a judgment and execute the corresponding control operation to realize the control of the street lamp.

The beneficial effects of the utility model are:

The utility model does not need to lay special communication lines, has the advantages of low cost, easy management and maintenance, etc., can be applied to the control and monitoring of street lamps without setting up special signal lines, and can also be used to realize the controllability of some original street lamps. Transformation.

The above description is only an overview of the technical solution of the utility model. In order to understand the technical means of the utility model more clearly and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiment of the utility model with accompanying drawings. back. The specific embodiment of the utility model is given in detail by the following examples and accompanying drawings.

Description of drawings

Figure 1 is a schematic diagram of the control circuit of the present utility model.

Detailed ways

The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

As shown in Figure 1, a street lamp control system based on power line carrier communication is composed of three parts: the main control circuit, the carrier signal processing circuit and the power supply;

The main control circuit is composed of the minimum system circuit of the single-chip microcomputer, the display circuit, and the serial communication circuit. The minimum system circuit of the single-chip microcomputer includes integrated block U3, the display circuit includes integrated block U4, and the serial communication circuit includes integrated block U6;

The carrier signal processing circuit is composed of a zero-crossing detection circuit, a transceiver circuit, and a coupling circuit. The zero-crossing detection circuit includes integrated blocks U1 and U2, the transceiver circuit includes integrated blocks U8 and U9, and the coupling circuit includes a transformer T1;

The power supply is composed of a DC voltage stabilizing circuit, and the DC voltage stabilizing circuit includes integrated blocks U5 and U7.

Further, the port connection of integrated block U3 is as follows:

Port 1 of integrated block U3 is connected in series with resistor R3 to port 40 of U3;

Port 2 of manifold U3 is connected to port 2 of manifold U1;

Port 3 of manifold U3 is connected to port 11 of manifold U6;

Port 4 of manifold U3 is connected to port 12 of manifold U6;

Port 9 of integrated block U3 connects resistor R1 to power supply VCC2, and at the same time connects capacitor C1 to ground;

Port 10 of manifold U3 is connected to port 10 of manifold U8;

Port 11 of manifold U3 is connected to port 9 of manifold U8;

Connect the No. 18 port of the integrated block U3 to the ground after connecting the capacitor C3;

The No. 19 port of the integrated block U3 is connected to the ground after the capacitor C2, and the crystal oscillator Y1 is connected between the No. 19 port and the No. 18 port of U3;

Port 20 of the integrated block U3 is grounded;

The No. 21 port of the integrated block U3 is connected in series with the resistor R14 to the base of the transistor Q1;

The No. 22 port of the integrated block U3 is connected in series with the resistor R15 to the base of the transistor Q2;

The No. 23 port of the integrated block U3 is connected in series with the resistor R16 to the base of the transistor Q3;

The No. 24 port of the integrated block U3 is connected in series with the resistor R17 to the base of the transistor Q4;

Port 32 of integrated block U3 is connected in series with resistor R13 to port 3 of integrated block U4;

Port 33 of integrated block U3 is connected in series with resistor R12 to port 5 of integrated block U4;

Port 34 of integrated block U3 is connected in series with resistor R11 to port 10 of integrated block U4;

Port No. 35 of integrated block U3 is connected in series with resistor R10 to port No. 1 of integrated block U4;

Port 36 of integrated block U3 is connected in series with resistor R9 to port 2 of integrated block U4;

Port 37 of integrated block U3 is connected in series with resistor R8 to port 4 of integrated block U4;

Port 38 of integrated block U3 is connected in series with resistor R7 to port 7 of integrated block U4;

The No. 39 port of the integrated block U3 is connected in series with the resistor R6 to the No. 11 port of the integrated block U4.

Further, the port connection of integrated block U4 is:

Port 1 of manifold U4 is connected in series with resistor R10 to port 35 of manifold U3;

Port No. 2 of integrated block U4 is connected in series with resistor R9 to port No. 36 of integrated block U3;

Port 3 of integrated block U4 is connected in series with resistor R13 to port 32 of integrated block U3;

Port 4 of integrated block U4 is connected in series with resistor R8 to port 37 of integrated block U3;

The No. 5 port of the integrated block U4 is connected in series with the resistor R12 to the No. 33 port of the integrated block U3;

Port 6 of integrated block U4 is connected to the collector of transistor Q4;

The No. 7 port of the integrated block U4 is connected in series with the resistor R7 to the No. 38 port of the integrated block U3;

Port 8 of integrated block U4 is connected to the collector of transistor Q3;

Port 9 of integrated block U4 is connected to the collector of transistor Q2;

Port No. 10 of integrated block U4 is connected in series with resistor R11 to port No. 34 of integrated block U3;

The No. 11 port of the integrated block U4 is connected in series with the resistor R6 to the No. 39 port of the integrated block U3;

The No. 12 port of the integrated block U4 is connected to the collector of the triode Q1;

The emitters of the transistors Q1, Q2, Q3 and Q4 are connected together and connected to the power supply VCC2.

Further, the port connection of the integrated block U6 is as follows:

Port 1 of integrated block U6 is connected in series with capacitor C17 to port 3 of U6;

The No. 2 port of the integrated block U6 is connected in series with the capacitor C13 to the power supply VCC2;

Port 4 of integrated block U6 is connected in series with capacitor C18 to port 5 of U6;

Port 6 of integrated block U6 is connected in series with capacitor C16 to ground;

Port 11 of manifold U6 is connected to port 3 of manifold U3;

Port 12 of manifold U6 is connected to port 4 of manifold U3;

Port 13 of manifold U6 is connected to port 3 of socket J2;

Port 14 of manifold U6 is connected to port 2 of socket J2;

Connect port 15 of integrated block U6 to ground;

The No. 16 port of the integrated block U6 is connected to the power supply VCC2 and the capacitor C11 is connected in series to the ground.

Further, the port connections of integrated blocks U1 and U2 are:

Port 1 of integrated block U2 is connected to power supply VCC2;

The No. 2 port of the integrated block U2 is connected to the No. 1 port of U1 and the resistor R2 is connected in series to the ground;

The No. 3 port of the integrated block U2 is connected to the neutral line of the AC 220V power supply;

The No. 4 port of the integrated block U2 is successively connected in series with the diode D4, and the parallel circuit of the resistors R4 and R5 is connected to the live wire of the AC 220V power supply.

Further, the port connections of integrated blocks U8 and U9 are:

Port 1 of integrated block U8 is connected in series with capacitor C25 to ground;

Port No. 2 of integrated block U8 is connected to one end of the parallel circuit of inductor L1, capacitor C5 and resistor R18;

The No. 3 port of the integrated block U8 is connected to the other end of the parallel circuit of the inductor L1, the capacitor C5 and the resistor R18;

Port No. 4 of integrated block U8 is connected in series with capacitor C24 to ground;

Connect No. 6 port of Manifold U8 to No. 3 port of Manifold U1;

Port 9 of manifold U8 is connected to port 11 of manifold U3;

Port 10 of manifold U8 is connected to port 10 of manifold U3;

Port 13 of manifold U8 is connected to port 2 of manifold U1;

Port 14 of the integrated block U8 is connected to the power supply VCC2;

Port 16 of the integrated block U8 is connected to the power supply VCC2;

The No. 17 port of the integrated block U8 is connected to the ground, and the capacitor C22 is connected between the No. 17 port and the No. 16 port of U8;

The No. 18 port of the integrated block U8 is connected to the power supply VCC2, and the series circuit composed of the resistor R23, the inductors L5, L6, the resistor R28, and the capacitor C33 is connected in series between the No. 18 port of U8 and the No. 5 port of U9, and the common circuit of the inductors L5 and L6 A capacitor C28 is connected in series to the ground, and a common terminal of the inductor L6 and the resistor R28 is connected in series with a capacitor C30 to the ground;

The No. 19 port of the integrated block U8 is connected to the parallel circuit of the resistor R26 and the capacitor C29 to the ground, and the No. 19 port is simultaneously connected to the serial circuit of the capacitor C27 and the resistor R25 to the No. 20 port;

The No. 22 port of the integrated block U8 and the connection end of the capacitor C26 are commonly grounded;

Connect the No. 24 port of the integrated block U8 to the ground after connecting the capacitor C20;

The No. 25 port of the integrated block U8 is connected to the ground after the capacitor C21, and the parallel circuit of the crystal oscillator Y2 and the resistor R22 is connected between the No. 25 port and the No. 24 port of U8;

Port 26 of the integrated block U8 is grounded;

The No. 28 port of the integrated block U8 is connected to the power supply VCC2, and the capacitor C26 is also connected between the No. 28 port of U8 and No. 26;

Connect port 1 of integrated block U9 to ground;

The No. 2 port of the integrated block U9 connects the series circuit of the capacitor C8 and the resistor R20 to the No. 5 port of the transformer T1;

Port 3 of the integrated block U9 is connected to the power supply VCC;

Connect the No. 4 port of the integrated block U9 to the ground after connecting the capacitor C34;

Port No. 5 of integrated block U9 is connected in series with capacitor C33, resistor R28, inductors L6, L5, and resistor R23 to port No. 18 of U8. The common end of inductors L5 and L6 is connected in series with capacitor C28 to ground, and inductors L6 and The common end of the resistor R28 is connected in series with the capacitor C30 to ground;

Connect the No. 6 port of the integrated block U9 to the ground after connecting the capacitor C35;

The No. 7 port of the integrated block U9 is connected to the power supply VCC;

Connect the No. 8 port of the integrated block U9 to the ground after connecting the capacitor C36;

Port 11 of the integrated block U9 is connected to the power supply VCC;

Port 15 of manifold U9 is connected to port 4 of manifold U1;

Port 16 of the integrated block U9 is connected to the power supply VCC;

Connect the No. 17 port of the integrated block U9 to the ground after connecting the capacitor C32;

The No. 19 port of the integrated block U9 is connected to the power supply VCC after connecting the resistor R30, and the No. 19 port of U9 is also connected to the No. 20 and No. 21 ports;

Connect the No. 21 port of the integrated block U9 to the ground after connecting the resistor R29;

Connect port 22 of integrated block U9 to ground;

Connect port 23 of integrated block U9 to ground;

The No. 24 port of the integrated block U9 connects the series circuit of the capacitor C31 and the resistor R27 to the No. 3 port of the transformer T1.

Further, the port connection of transformer T1 is as follows:

The No. 1 port of the transformer T1 is connected to the neutral line of the AC 220V power supply, and the No. 1 port of T1 is connected to the series circuit of the resistors R31 and R21 to the live wire of the AC 220V power supply;

The No. 2 port of transformer T1 is connected in series with capacitor C9 and then connected to the live wire of AC 220V power supply, and the No. 2 port and No. 1 port of T1 have indirect protection diode Z2;

Terminal 4 of transformer T1 is connected to ground;

The No. 5 port of the transformer T1 is connected to the series circuit of R20 and C8 to the No. 2 port of the integrated block U9, the No. 5 port of T1 is connected to the resistor R19, the series circuit of the capacitor C6 and the inductor L2 is connected to the No. 3 port of the integrated block U8, and the T1 Connect protection diode Z1 to ground on port 5;

Port 3 of transformer T1 connects the series circuit of R27 and C31 to port 24 of manifold U9, port 3 of T1 connects resistor R24, the series circuit of capacitor C23 and inductor L4 to port 2 of manifold U8, and T1 Port No. 3 is connected to the protection diode Z3 to the ground, and the common terminal of the capacitor C23 and the resistor R24 is connected to the parallel circuit of the capacitor C7 and the inductor L3 to the common terminal of the capacitor C6 and the resistor R19.

Further, the port connections of integrated blocks U5 and U7 are:

The No. 1 port of the integrated block U5 is connected to the No. 2 port of the rectifier bridge D2, and the No. 1 port of U5 is connected to the capacitor C10 to the ground at the same time;

The No. 2 port of the integrated block U5 is grounded;

The No. 3 port of the integrated block U5 is connected to the power supply VCC, and the No. 3 port of U5 is connected to the parallel circuit of C12 and C14 to the ground at the same time;

Port 1 of the integrated block U7 is grounded;

The No. 2 port of the integrated block U7 is connected to the power supply VCC2, and the No. 2 port of U7 is simultaneously connected to the parallel circuit of C15 and C19 to the ground;

Port 3 of the integrated block U7 is connected to the power supply VCC;

Connect No. 1 port of rectifier bridge D2 to No. 3 port of power socket J1;

The No. 3 port of the rectifier bridge D2 is connected to the No. 1 port of the power socket J1;

Port 4 of the rectifier bridge D2 is grounded.

The working principle of the main control circuit is:

Manifold U3 is an 8-bit single-chip microcomputer. Resistor R1 and capacitor C1 form a reset circuit. Crystal oscillator Y1 and capacitors C2 and C3 form a clock pulse circuit of the single-chip microcomputer. Manifold U6 and capacitors C11, C13, C16, C17, and C18 form a level conversion circuit. , used to convert the TTL level signal sent by the microcontroller to the computer into an RS232 level signal and convert the RS232 level signal forwarded back by the computer into a TTL level signal, and display the integrated block U4 as a 4-digit digital tube, which is used in the After receiving the correct data, it is displayed, and the transistors Q1-Q4 are used to drive the digital tube U4.

The working principle of the carrier signal processing circuit is:

The zero-crossing detection circuit composed of optocoupler U2 and inverter U1 outputs a square wave signal, whose rising edge is at the zero-crossing point of the power frequency signal, and this signal is used as the synchronous pulse signal of the carrier signal processing chip U8 to input to The SYNC port (port 13) is used as a reference for sending and receiving synchronization.

FEINP (No. 2 port) and FEINN (No. 3 port) of U8 are the positive and negative input terminals of the internal front-end operational amplifier. When receiving data, the signal obtained from the coupling transformer T1 passes through the band-pass filter composed of R19, R24, C7, L3, C6, C23, L2, L4, R18, C5, and L1, and then enters the on-chip amplifier through the FEINP and FEINN pins Amplified, the amplified signal is filtered by a band-pass filter composed of off-chip R25, C27, C29, R26, etc., and then sent to the chip RXIN port (port 19), and the on-chip receiver completes the reception of data packets.

The transmission path consists of a low-pass filter and a power amplifier. The role of the low-pass filter composed of R23, L5, C28, L6, C30, R28, and C33 is to filter out high-frequency signals and smooth the waveform output by the internal DAC of U8, so as to ensure the impedance matching between the front and rear stages to achieve smooth signal transmission the goal of. The filtered signal is amplified by the power amplifier chip U9 and connected to the power line through a coupling transformer. The bandwidth of the filter is determined by the carrier used. A typical requirement for a power amplifier is to obtain a signal level of 1-2Vrms at an impedance of 2-100 ohms after passing through a transformer. The TX_BUSY terminal (port No. 6) of U8 is connected to the enable terminal EN (port No. 15) of U9 after passing through the inverter U1. When the data frame is in the sending state, TX_BUSY is at low level, and U9 is enabled after passing through the inverter.

The coupling circuit is the input and output path of the carrier signal. Its main function is to isolate the 220V/50Hz power frequency, to provide an efficient coupling effect under the premise of ensuring safety and reliability, and to meet the transmission requirements of high-frequency signals , provide sufficient bandwidth, good phase, impedance characteristics and small work attenuation. The transmitted signal is amplified by the power amplifier U9 and then output to the coupling transformer T1 through the terminals ROUT+ (port 24) and ROUT- (port 2) and coupled to the power line. The received signal is input to U8 through the coupling transformer T1 and the band-pass filter.

The primary coupling capacitor C9 of the coupling transformer T1 and the primary coil of the transformer form a high-pass filter, which blocks the 50Hz power frequency current and attenuates low-frequency signals and interference signals as much as possible. The two resistors R21 and R31 are used to consume residual power when the power is off. charge across the coupling capacitor. The primary and secondary stages of T1 are connected with transient suppression diodes Z1, Z2, Z3, which can clamp the voltage within the allowable range when there is an instantaneous overvoltage and impact on the power grid, so as to ensure that other components are not damaged.

The working principle of the DC voltage regulator circuit is:

The rectifier bridge D2 and the capacitor C10 rectify and filter the AC voltage input through the socket J2 into a DC voltage, U5 outputs the DC voltage as a constant voltage value, and U7 stabilizes the voltage output by U5 as a smaller constant value.

The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (8)

1. the street lamp control system based on power line carrier communication, is characterized in that: by governor circuit, carrier signal treatment circuit and power supply three parts, connected to form;

Governor circuit is connected to form by single-chip minimum system circuit, display circuit, serial communication circuit, comprises integrated package U3 in single-chip minimum system circuit, comprises integrated package U4 in display circuit, comprises integrated package U6 in serial communication circuit;

Carrier signal treatment circuit is connected to form by zero cross detection circuit, transmission circuit, coupling circuit, comprises integrated package U1 and U2 in zero cross detection circuit, comprises integrated package U8 and U9 in transmission circuit, and coupling circuit comprises transformer T1;

Power supply is comprised of direct current regulation circuit, and direct current regulation circuit comprises integrated package U5 and U7.

2. the street lamp control system based on power line carrier communication according to claim 1, is characterized in that:

After No. 1 port series resistor R3 of integrated package U3, arrive No. 40 ports of U3;

No. 2 ports of integrated package U3 connect No. 2 ports of integrated package U1;

No. 3 ports of integrated package U3 connect No. 11 ports of integrated package U6;

No. 4 ports of integrated package U3 connect No. 12 ports of integrated package U6;

After No. 9 port connecting resistance R1 of integrated package U3, to power supply VCC2, connect capacitor C 1 rear to ground simultaneously;

No. 10 ports of integrated package U3 connect No. 10 ports of integrated package U8;

No. 11 ports of integrated package U3 connect No. 9 ports of integrated package U8;

No. 18 ports of integrated package U3 arrive ground after connecing capacitor C 3;

No. 19 ports of integrated package U3 arrive ground after connecing capacitor C 2, between No. 19 ports of U3 and No. 18 ports, are also connected to crystal oscillator Y1;

No. 20 port ground connection of integrated package U3;

After No. 21 port series resistor R14 of integrated package U3, arrive the base stage of triode Q1;

After No. 22 port series resistor R15 of integrated package U3, arrive the base stage of triode Q2;

After No. 23 port series resistor R16 of integrated package U3, arrive the base stage of triode Q3;

After No. 24 port series resistor R17 of integrated package U3, arrive the base stage of triode Q4;

After No. 32 port series resistor R13 of integrated package U3, arrive No. 3 ports of integrated package U4;

After No. 33 port series resistor R12 of integrated package U3, arrive No. 5 ports of integrated package U4;

After No. 34 port series resistor R11 of integrated package U3, arrive No. 10 ports of integrated package U4;

After No. 35 port series resistor R10 of integrated package U3, arrive No. 1 port of integrated package U4;

After No. 36 port series resistor R9 of integrated package U3, arrive No. 2 ports of integrated package U4;

After No. 37 port series resistor R8 of integrated package U3, arrive No. 4 ports of integrated package U4;

After No. 38 port series resistor R7 of integrated package U3, arrive No. 7 ports of integrated package U4;

After No. 39 port series resistor R6 of integrated package U3, arrive No. 11 ports of integrated package U4.

3. the street lamp control system based on power line carrier communication according to claim 1, is characterized in that:

After No. 1 port series resistor R10 of integrated package U4, arrive No. 35 ports of integrated package U3;

After No. 2 port series resistor R9 of integrated package U4, arrive No. 36 ports of integrated package U3;

After No. 3 port series resistor R13 of integrated package U4, arrive No. 32 ports of integrated package U3;

After No. 4 port series resistor R8 of integrated package U4, arrive No. 37 ports of integrated package U3;

After No. 5 port series resistor R12 of integrated package U4, arrive No. 33 ports of integrated package U3;

No. 6 ports of integrated package U4 connect the collector electrode of triode Q4;

After No. 7 port series resistor R7 of integrated package U4, arrive No. 38 ports of integrated package U3;

No. 8 ports of integrated package U4 connect the collector electrode of triode Q3;

No. 9 ports of integrated package U4 connect the collector electrode of triode Q2;

After No. 10 port series resistor R11 of integrated package U4, arrive No. 34 ports of integrated package U3;

After No. 11 port series resistor R6 of integrated package U4, arrive No. 39 ports of integrated package U3;

No. 12 ports of integrated package U4 connect the collector electrode of triode Q1;

Triode Q1, Q2, Q3, the emitter of Q4 connects together and links power supply VCC2.

4. the street lamp control system based on power line carrier communication according to claim 1, is characterized in that:

After No. 1 port serial connection capacitor C 17 of integrated package U6, arrive No. 3 ports of U6;

After No. 2 port serial connection capacitor C 13 of integrated package U6, arrive power supply VCC2;

After No. 4 port serial connection capacitor C 18 of integrated package U6, arrive No. 5 ports of U6;

After No. 6 port serial connection capacitor C 16 of integrated package U6, arrive ground;

No. 11 ports of integrated package U6 are connected to No. 3 ports of integrated package U3;

No. 12 ports of integrated package U6 are connected to No. 4 ports of integrated package U3;

No. 13 ports of integrated package U6 are connected to No. 3 ports of socket J2;

No. 14 ports of integrated package U6 are connected to No. 2 ports of socket J2;

No. 15 ports of integrated package U6 are connected to ground;

No. 16 ports of integrated package U6 are connected to power supply VCC2 and are connected in series capacitor C 11 to ground.

5. the street lamp control system based on power line carrier communication according to claim 1, is characterized in that:

No. 1 port of integrated package U2 is connected to power supply VCC2;

No. 2 ports of integrated package U2 are connected to No. 1 port of U1 series resistor R2 to ground;

No. 3 ports of integrated package U2 are connected to the zero line of alternating current 220V power supply;

No. 4 ports of integrated package U2 are series diode D4 in succession, arrives the live wire of alternating current 220V power supply after the parallel circuits of resistance R 4 and R5.

6. the street lamp control system based on power line carrier communication according to claim 1, is characterized in that:

After No. 1 port serial connection capacitor C 25 of integrated package U8, arrive ground;

No. 2 ports of integrated package U8 connect one end of the parallel circuits of inductance L 1, capacitor C 5 and resistance R 18;

No. 3 ports of integrated package U8 connect the other end of the parallel circuits of inductance L 1, capacitor C 5 and resistance R 18;

After No. 4 port serial connection capacitor C 24 of integrated package U8, arrive ground;

No. 6 ports of integrated package U8 connect No. 3 ports of integrated package U1;

No. 9 ports of integrated package U8 connect No. 11 ports of integrated package U3;

No. 10 ports of integrated package U8 connect No. 10 ports of integrated package U3;

No. 13 ports of integrated package U8 connect No. 2 ports of integrated package U1;

No. 14 ports of integrated package U8 are connected to power supply VCC2;

No. 16 ports of integrated package U8 are connected to power supply VCC2;

No. 17 ports of integrated package U8 are connected to ground, between No. 17 ports of U8 and No. 16 ports, are also connected to capacitor C 22;

No. 18 ports of integrated package U8 are connected to power supply VCC2, series resistor R23 between No. 18 ports of U8 and No. 5 ports of U9, inductance L 5, L6, resistance R 28, the series circuit that capacitor C 33 forms, the common port serial connection capacitor C 28 of inductance L 5, L6 is to ground, and the common port of inductance L 6 and resistance R 28 serial connection capacitor C 30 is to ground;

No. 19 port connecting resistance R26 of integrated package U8 and the parallel circuits of capacitor C 29 are to ground, and No. 19 ports connect series circuit to 20 port of capacitor C 27 and resistance R 25 simultaneously;

No. 22 ports of integrated package U8 and the link common ground of capacitor C 26;

No. 24 ports of integrated package U8 arrive ground after connecing capacitor C 20;

No. 25 ports of integrated package U8 arrive ground after connecing capacitor C 21, are also connected to the parallel circuits of crystal oscillator Y2 and resistance R 22 between No. 25 ports of U8 and No. 24 ports;

No. 26 port ground connection of integrated package U8;

No. 28 ports of integrated package U8 are connected to power supply VCC2, between No. 28 ports of U8 and No. 26, are also connected to capacitor C 26;

No. 1 port of integrated package U9 is connected to ground;

No. 2 ports of integrated package U9 connect the series circuit of capacitor C 8 and resistance R 20 to No. 5 ports of transformer T1;

No. 3 ports of integrated package U9 are connected to power supply VCC;

No. 4 ports of integrated package U9 arrive ground after connecing capacitor C 34;

No. 5 port serial connection capacitor C 33 of integrated package U9, resistance R 28, inductance L 6, L5, the series circuit that resistance R 23 forms is to No. 18 ports of U8, and the common port serial connection capacitor C 28 of inductance L 5, L6 is to ground, and the common port of inductance L 6 and resistance R 28 serial connection capacitor C 30 is to ground;

No. 6 ports of integrated package U9 arrive ground after connecing capacitor C 35;

No. 7 ports of integrated package U9 are connected to power supply VCC;

No. 8 ports of integrated package U9 arrive ground after connecing capacitor C 36;

No. 11 ports of integrated package U9 are connected to power supply VCC;

No. 15 ports of integrated package U9 connect No. 4 ports of integrated package U1;

No. 16 ports of integrated package U9 are connected to power supply VCC;

No. 17 ports of integrated package U9 arrive ground after connecing capacitor C 32;

After No. 19 port connecting resistance R30 of integrated package U9, to power supply VCC, No. 19 ports of U9 are also connected to No. 20, No. 21 ports;

After No. 21 port connecting resistance R29 of integrated package U9, arrive ground;

No. 22 ports of integrated package U9 are connected to ground;

No. 23 ports of integrated package U9 are connected to ground;

No. 24 ports of integrated package U9 connect the series circuit of capacitor C 31 and resistance R 27 to No. 3 ports of transformer T1.

7. the street lamp control system based on power line carrier communication according to claim 1, is characterized in that:

No. 1 port of transformer T1 connects the zero line of alternating current 220V power supply, after No. 1 port connecting resistance R31 of T1 and the series circuit of R21 to the live wire of alternating current 220V power supply;

The live wire that connects alternating current 220V power supply after No. 2 port serial connection capacitor C 9 of transformer T1, is connected to protection diode Z2 between No. 2 ports of T1 and No. 1 port;

No. 4 ports of transformer T1 are received ground;

No. 5 ports of transformer T1 connect the series circuit of R20 and C8 to No. 2 ports of integrated package U9, No. 5 port connecting resistance R19 of T1, and the series circuit of capacitor C 6 and inductance L 2 is to No. 3 ports of integrated package U8, and No. 5 ports of T1 meet protection diode Z1 to ground;

No. 3 ports of transformer T1 connect the series circuit of R27 and C31 to No. 24 ports of integrated package U9; No. 3 port connecting resistance R24 of T1; the series circuit of capacitor C 23 and inductance L 4 is to No. 2 ports of integrated package U8; No. 3 ports of T1 meet protection diode Z3 to ground, and the public termination capacitor C 7 of capacitor C 23 and resistance R 24 and the parallel circuits of inductance L 3 are to the common port of capacitor C 6 and resistance R 19.

8. the street lamp control system based on power line carrier communication according to claim 1, is characterized in that, the port connection of integrated package U5 and U7 is:

No. 1 port of integrated package U5 connects No. 2 ports of rectifier bridge D2, and No. 1 port of U5 connects capacitor C 10 to ground simultaneously;

No. 2 port ground connection of integrated package U5;

No. 3 ports of integrated package U5 meet power supply VCC, and No. 3 ports of U5 connect the parallel circuits of C12, C14 to ground simultaneously;

No. 1 port ground connection of integrated package U7;

No. 2 ports of integrated package U7 meet power supply VCC2, and No. 2 ports of U7 connect the parallel circuits of C15, C19 to ground simultaneously;

No. 3 ports of integrated package U7 meet power supply VCC;

No. 1 port of rectifier bridge D2 connects No. 3 ports of supply socket J1;

No. 3 ports of rectifier bridge D2 connect No. 1 port of supply socket J1;

No. 4 port ground connection of rectifier bridge D2.

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