Stair lamp PLC direct current carrier bidirectional communication control system

Abstract

The utility model discloses a PLC direct current carrier bidirectional communication control system for stair lamps. The PLC direct current carrier bidirectional communication control system comprises a control end signal sending module and a receiving end signal receiving module, the control end signal sending module comprises an MCU controller, a photoelectric coupling circuit, a signal modulation control circuit, a 24V input power supply and a 24V carrier signal output end. The signal modulation control circuit is arranged between the 24 input power supply and the 24 V carrier signal output end; the MCU controller is connected to the 24V carrier signal output end through the photoelectric coupling circuit, and the PWM signal end of the MCU controller is connected to the control end of the photoelectric coupling circuit and the control end of the signal modulation control circuit. According to the utility model, the structural arrangement is reasonable, the whole structural part is few, the processing and manufacturing cost is reduced, the signal transmission and receiving are effectively realized, the signal return is facilitated, the device is suitable for the data return of the ladder lamp and the like, the use stability and effectiveness are improved, the use experience effect is improved, the applicability is strong, and the practicability is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of stair lamp communication control, and in particular relates to a stair lamp PLC direct current carrier two-way communication control system. Background Art

[0002] Corridor lighting is a common electrical device used for stairway lighting. Multi-control switches require manual operation, which can be cumbersome when carrying things and requiring the user to put them down first. There's also the human factor: many people turn on the lights but often forget to turn them off, resulting in wasteful operation. Sound and light control typically have low sensitivity; ordinary footsteps aren't enough to trigger the lights, requiring stomping or clapping. This can also result in someone ahead triggering the light-on condition, but someone behind them enters the corridor at the end of the light-on delay, only to find the lights off midway through the corridor. This creates a poor user experience, and the overall structural cost is high, affecting the smoothness and effectiveness of control, limiting its applicability and practicality. Summary of the Invention

[0003] The purpose of the utility model is to provide a staircase lamp PLC DC carrier two-way communication control system which has a reasonable structure and is conducive to reducing costs.

[0004] The technical solution for achieving the purpose of the utility model is a staircase light PLC DC carrier two-way communication control system, comprising a control end signal sending module and a receiving end signal receiving module connected to the control end signal sending module;

[0005] The control end signal sending module includes an MCU controller, a photoelectric coupling circuit, a signal modulation control circuit, a 24V input power supply and a 24V carrier signal output end;

[0006] The signal modulation control circuit is arranged between the 24V input power supply and the 24V carrier signal output terminal;

[0007] The MCU controller is connected to the 24V carrier signal output terminal through a photoelectric coupling circuit, and the PWM signal terminal of the MCU controller is connected to the control terminal of the photoelectric coupling circuit and the signal modulation control circuit.

[0008] It is further preferred that: the receiving end signal receiving module includes an MCU return controller, a signal detection circuit, a voltage stabilizing circuit, a 24V carrier signal receiving end and a power recovery end;

[0009] The voltage stabilizing circuit is arranged between the 24V carrier signal receiving terminal and the power supply recovery terminal;

[0010] The signal detection circuit is connected between the 24V carrier signal receiving end and the MCU feedback controller.

[0011] Further preferably, the signal modulation control circuit includes a first resistor, a second resistor, a first MOS transistor, a third resistor, a fourth resistor and a second MOS transistor;

[0012] One end of the first resistor and the second resistor are both connected to the gate of the first MOS tube, and the other end of the first resistor is connected to the PWM signal terminal of the MCU controller, and the other end of the second resistor is grounded;

[0013] The source of the first MOS transistor is grounded, and the drain is connected to the gate of the second MOS transistor via a third resistor;

[0014] The fourth resistor is connected between the gate and source of the second MOS tube, the 24V input power supply is connected to the source of the second MOS tube, and the 24V carrier signal output end is connected to the drain of the second MOS tube.

[0015] Further preferably, the photoelectric coupling circuit includes a photoelectric coupler, a third MOS transistor, a fifth resistor and a sixth resistor;

[0016] The anode of the photocoupler is connected to the 24V carrier signal output terminal, the cathode is connected to the drain of the third MOS tube, and the emitter of the photocoupler is connected to the MCU controller;

[0017] The source of the third MOS tube is grounded, and the gate is connected to one end of the fifth resistor and the sixth resistor. The other end of the fifth resistor is connected to the PWM signal end of the MCU controller, and the other end of the sixth resistor is grounded.

[0018] Further preferably, the signal detection circuit includes a fourth MOS transistor, a seventh resistor, an eighth resistor, a ninth resistor, a capacitor and a 5V power supply terminal;

[0019] One end of the seventh resistor and the eighth resistor are connected to the gate of the fourth MOS transistor, the other end of the eighth resistor is grounded, and the other end of the seventh resistor is connected to the 24V carrier signal receiving end;

[0020] The ninth resistor is connected to the 5V power supply terminal and the drain of the fourth MOS tube, and the drain of the fourth MOS tube is connected to the MCU feedback controller;

[0021] The capacitor is connected between the 24V carrier signal receiving end and the MCU feedback controller.

[0022] Further preferably, the second MOS transistor is a PMOS transistor;

[0023] The first MOS transistor, the third MOS transistor and the fourth MOS transistor are all NMOS transistors.

[0024] Control end signal sending:

[0025] When in use, the MCU controller outputs valid data pulses and modulates the information to the 24 power supply through the opening and closing of the first MOS tube, the second MOS tube and the third MOS tube to achieve the transmission of valid data;

[0026] Signal reception at the receiving end: The receiving end receives 24 power, first detects the carrier signal through the fourth MOS tube, and sends it to the MCU feedback controller for specific data processing. At the same time, the power supply is stabilized to provide reliable power supply for the receiving end;

[0027] Data transmission from the receiving end:

[0028] Since it is difficult to modulate the power signal at the receiving end, it is impossible to directly modulate the signal of the returned data. This technical solution makes full use of the interference caused by the information on the main line signal, limits the interference, and realizes the loading of effective information.

[0029] The control end extracts the returned data:

[0030] Because the returned data has no valid information carrier, it uses the signal to interfere with the main line carrier signal; therefore, the control end uses the signal difference caused by the superposition of the interfering signal to compare with the valid original data of the carrier through a comparison circuit to distinguish whether there is a signal returned.

[0031] The present invention has positive effects: the structure of the present invention is reasonably set up, and it not only has fewer overall structural components, which is conducive to reducing processing and manufacturing costs, but it can not only effectively realize signal sending and receiving, but also is conducive to signal return. The overall cost is low, and it is suitable for use in return data such as staircase lights, which is conducive to improving the stability and effectiveness of use, improving the user experience, and has strong applicability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to make the content of the utility model easier to understand, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings, wherein:

[0033] Figure 1 This is a schematic diagram of the circuit structure of the utility model.

[0034] Figure numerals: control end signal sending module 1, receiving end signal receiving module 2, MCU controller 3, optoelectronic coupling circuit 4, signal modulation control circuit 5, 24V input power supply 6, 24V carrier signal output terminal 7, MCU feedback controller 8, signal detection circuit 9, voltage stabilizing circuit 10, 24V carrier signal receiving terminal 11, power recovery terminal 12. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] Example

[0037] See Figure 1 As shown, a staircase light PLC DC carrier bidirectional communication control system includes a control-end signal sending module 1 and a receiving-end signal receiving module 2 connected to the control-end signal sending module. In actual application, the control-end signal sending module includes an MCU controller 3, an optoelectronic coupling circuit 4, a signal modulation control circuit 5, a 24V input power supply 6, and a 24V carrier signal output terminal 7. During assembly, the signal modulation control circuit is arranged between the 24V input power supply and the 24V carrier signal output terminal. The MCU controller is connected to the 24V carrier signal output terminal via the optoelectronic coupling circuit, and the PWM signal terminal of the MCU controller is connected to the control terminal of the optoelectronic coupling circuit and the signal modulation control circuit. Through the above structure, information is modulated onto the 24V power supply through the control of the signal modulation control circuit and the optoelectronic coupling circuit, realizing the transmission of effective data.

[0038] In actual use, the receiving-end signal receiving module includes an MCU return controller 8, a signal detection circuit 9, a voltage stabilization circuit 10, a 24V carrier signal receiving terminal 11, and a power recovery terminal 12. During use, the voltage stabilization circuit is positioned between the 24V carrier signal receiving terminal and the power recovery terminal, while the signal detection circuit is connected between the 24V carrier signal receiving terminal and the MCU return controller. The signal detection circuit detects the carrier signal, and the MCU return controller processes the data.

[0039] In this embodiment, the signal modulation control circuit includes a first resistor R1, a second resistor R2, a first MOS transistor Q1, a third resistor R3, a fourth resistor R4, and a second MOS transistor Q2. When connected, one end of each of the first and second resistors is connected to the gate of the first MOS transistor, the other end of the first resistor is connected to the PWM signal terminal of the MCU controller, and the other end of the second resistor is grounded. The source of the first MOS transistor is grounded, and the drain is connected to the gate of the second MOS transistor via the third resistor. The fourth resistor is connected between the gate and source of the second MOS transistor. The 24V input power supply is connected to the source of the second MOS transistor, and the 24V carrier signal output terminal is connected to the drain of the second MOS transistor.

[0040] In addition, in this embodiment, the photoelectric coupling circuit includes a photoelectric coupler U1, a third MOS transistor Q3, a fifth resistor R5, and a sixth resistor R6; during assembly, the anode of the photoelectric coupler is connected to the 24V carrier signal output terminal, the cathode is connected to the drain of the third MOS transistor, and the emitter of the photoelectric coupler is connected to the MCU controller; the source of the third MOS transistor is grounded, and the gate is connected to one end of the fifth resistor and the sixth resistor, the other end of the fifth resistor is connected to the PWM signal terminal of the MCU controller, and the other end of the sixth resistor is grounded.

[0041] Moreover, in actual application: the signal detection circuit includes a fourth MOS tube Q4, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a capacitor C and a 5V power supply end; during assembly, one end of the seventh resistor and the eighth resistor are connected to the gate of the fourth MOS tube, the other end of the eighth resistor is grounded, and the other end of the seventh resistor is connected to the 24V carrier signal receiving end; the ninth resistor is connected to the 5V power supply end and the drain of the fourth MOS tube, and the drain of the fourth MOS tube is connected to the MCU feedback controller; the capacitor is connected between the 24V carrier signal receiving end and the MCU feedback controller.

[0042] In this embodiment, the second MOS transistor is a PMOS transistor; the first MOS transistor, the third MOS transistor and the fourth MOS transistor are all NMOS transistors.

[0043] Control end signal sending:

[0044] When in use, the MCU controller outputs valid data pulses and modulates the information to the 24 power supply through the opening and closing of the first MOS tube, the second MOS tube and the third MOS tube to achieve the transmission of valid data;

[0045] Signal reception at the receiving end: The receiving end receives 24 power, first detects the carrier signal through the fourth MOS tube, and sends it to the MCU feedback controller for specific data processing. At the same time, the power supply is stabilized to provide reliable power supply for the receiving end;

[0046] Data transmission from the receiving end:

[0047] Since it is difficult to modulate the power signal at the receiving end, it is impossible to directly modulate the signal of the returned data. This technical solution makes full use of the interference caused by the information on the main line signal, limits the interference, and realizes the loading of effective information.

[0048] The control end extracts the returned data:

[0049] Because the returned data has no valid information carrier, it uses the signal to interfere with the main line carrier signal; therefore, the control end uses the signal difference caused by the superposition of the interfering signal to compare with the valid original data of the carrier through a comparison circuit to distinguish whether there is a signal returned.

[0050] The present invention has positive effects: the structure of the present invention is reasonably set up, and it not only has fewer overall structural components, which is conducive to reducing processing and manufacturing costs, but it can not only effectively realize signal sending and receiving, but also is conducive to signal return. The overall cost is low, and it is suitable for use in return data such as staircase lights, which is conducive to improving the stability and effectiveness of use, improving the user experience, and has strong applicability and good practicality.

[0051] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components described in the specification can also be directly processed according to existing technical common sense without any doubt. At the same time, the connection method of each component adopts the mature conventional means in the existing technology, and the machinery, parts and equipment all adopt conventional models in the existing technology, so no specific description is given here.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to enumerate all embodiments here. However, obvious variations or modifications arising from the essence of the present invention remain within the scope of protection of the present invention.

Claims

1. A staircase light PLC DC carrier two-way communication control system, characterized by: It includes a control end signal sending module and a receiving end signal receiving module connected to the control end signal sending module by signal; The control end signal sending module includes an MCU controller, a photoelectric coupling circuit, a signal modulation control circuit, a 24V input power supply and a 24V carrier signal output end; The signal modulation control circuit is arranged between the 24V input power supply and the 24V carrier signal output terminal; The MCU controller is connected to the 24V carrier signal output terminal through a photoelectric coupling circuit, and the PWM signal terminal of the MCU controller is connected to the control terminal of the photoelectric coupling circuit and the signal modulation control circuit.

2. The staircase light PLC DC carrier bidirectional communication control system according to claim 1, characterized in that: The receiving end signal receiving module includes an MCU return controller, a signal detection circuit, a voltage stabilization circuit, a 24V carrier signal receiving end and a power recovery end; The voltage stabilizing circuit is arranged between the 24V carrier signal receiving terminal and the power supply recovery terminal; The signal detection circuit is connected between the 24V carrier signal receiving end and the MCU feedback controller.

3. The staircase light PLC DC carrier bidirectional communication control system according to claim 2, characterized in that: The signal modulation control circuit includes a first resistor, a second resistor, a first MOS transistor, a third resistor, a fourth resistor and a second MOS transistor; One end of the first resistor and the second resistor are both connected to the gate of the first MOS tube, and the other end of the first resistor is connected to the PWM signal terminal of the MCU controller, and the other end of the second resistor is grounded; The source of the first MOS transistor is grounded, and the drain is connected to the gate of the second MOS transistor via a third resistor; The fourth resistor is connected between the gate and source of the second MOS tube, the 24V input power supply is connected to the source of the second MOS tube, and the 24V carrier signal output end is connected to the drain of the second MOS tube.

4. The staircase light PLC DC carrier bidirectional communication control system according to claim 3 is characterized by: The photoelectric coupling circuit includes a photoelectric coupler, a third MOS tube, a fifth resistor and a sixth resistor; The anode of the photocoupler is connected to the 24V carrier signal output terminal, the cathode is connected to the drain of the third MOS tube, and the emitter of the photocoupler is connected to the MCU controller; The source of the third MOS tube is grounded, and the gate is connected to one end of the fifth resistor and the sixth resistor. The other end of the fifth resistor is connected to the PWM signal end of the MCU controller, and the other end of the sixth resistor is grounded.

5. The staircase light PLC DC carrier bidirectional communication control system according to claim 4, characterized in that: The signal detection circuit includes a fourth MOS tube, a seventh resistor, an eighth resistor, a ninth resistor, a capacitor and a 5V power supply terminal; One end of the seventh resistor and the eighth resistor are connected to the gate of the fourth MOS transistor, the other end of the eighth resistor is grounded, and the other end of the seventh resistor is connected to the 24V carrier signal receiving end; The ninth resistor is connected to the 5V power supply terminal and the drain of the fourth MOS tube, and the drain of the fourth MOS tube is connected to the MCU feedback controller; The capacitor is connected between the 24V carrier signal receiving end and the MCU feedback controller.

6. The staircase light PLC DC carrier bidirectional communication control system according to claim 5, characterized in that: The second MOS tube is a PMOS tube; The first MOS transistor, the third MOS transistor and the fourth MOS transistor are all NMOS transistors.

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