Street lamp controller

Abstract

The utility model relates to a street lamp control device, and discloses a street lamp controller, which comprises a power supply unit, a communication unit, a master control single chip microcomputer unit and street lamp equipment, and further comprises a detection unit, and the power supply unit is used for supplying power to the master control single chip microcomputer unit, the communication unit and the detection unit; the communication unit is used for carrying out communication on an input signal and transmitting the input signal to the main control single chip microcomputer unit; the main control single chip microcomputer unit is used for processing the received signal and feeding back a control signal to the street lamp equipment; the detection unit is used for detecting street lamp equipment and transmitting a detected signal to the master control single-chip microcomputer unit. The street lamp controller is detected through the detection unit, so that failure problem points can be accurately judged, and the maintenance period is shortened; and a remote software platform can be connected, maintenance personnel can be quickly informed of failure problems, the maintenance burden of the maintenance personnel is relieved, and the maintenance efficiency is improved.

Description

Technical Field

[0001] This utility model relates to a street light control device, and more particularly to a street light controller. Background Technology

[0002] Most street light controllers can detect and alarm street light malfunctions, but they cannot detect malfunctions in the controller itself. This leads to incorrect fault diagnosis and affects the maintenance cycle for maintenance personnel.

[0003] As described in prior art CN202020281818.6, a street light controller body includes a mounting plate fixed to both sides of the controller body by bolts. Mounting holes are provided on both mounting plates. Two slots and a heat dissipation vent are provided at the top of the controller body. The heat dissipation vent is located between the two slots. A retaining plate is engaged with the interior of each slot, and a filter is fixedly connected between the retaining plates. Mounting grooves are provided on both sides of the controller body, and lamp tubes are installed inside each of the mounting grooves. This type of street light controller, which facilitates heat dissipation, uses retaining plates, slots, and a filter. By engaging the retaining plates within the slots, the filter can be fixed inside the heat dissipation vent. The filter can filter dust, preventing dust from easily entering the street light controller through the heat dissipation vent and affecting its service life. Summary of the Invention

[0004] This utility model addresses the problem in the prior art where street light controllers cannot detect faults in the controller itself, leading to incorrect fault diagnosis, and proposes a new street light controller.

[0005] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0006] A street light controller includes a power supply unit, a communication unit, a main control microcontroller unit, and street light equipment. It also includes a detection unit. The power supply unit provides power to the main control microcontroller unit, the communication unit, and the detection unit. The communication unit communicates with input signals and transmits them to the main control microcontroller unit. The main control microcontroller unit processes the received signals and feeds back control signals to the street light equipment. The detection unit detects the street light equipment and transmits the detected signals to the main control microcontroller unit.

[0007] Preferably, the detection unit includes a switch unit, a switch driving unit, and a switch engagement detection unit; the main control microcontroller unit is connected to the switch unit via the switch driving unit and provides a driving signal to the switch unit; the main control microcontroller unit provides a detection signal to the switch engagement detection unit, and controls the street light equipment through the switch engagement detection unit.

[0008] Preferably, the switch engagement detection unit includes an optocoupler module U1, a current-limiting resistor unit, and a rectifier diode; the input AC voltage signal is rectified by the rectifier diode and current-limiting by the current-limiting resistor unit before being input to the drive terminal of the optocoupler module U1; the output terminal of the optocoupler module U1 is connected to the main control microcontroller unit.

[0009] Preferably, the switching unit includes a relay or a thyristor; the switching detection unit corresponds to a relay driving unit and a thyristor driving unit.

[0010] Preferably, the relay drive unit includes transistor Q1, diode D2, resistor R8, resistor R7, and relay K1. One side of relay K1 is connected to the LIN input live wire and the L_OUT1 output live wire; the other side of relay K1 is connected to diode D2. One end of diode D2 is connected to the voltage, and the other end is connected to transistor Q1. One end of transistor Q1 is connected to ground, and the third end of transistor Q1 is connected to resistors R8 and R7. The other end of resistor R8 is grounded, and the other end of resistor R7 is connected to the main control microcontroller unit.

[0011] As a preferred embodiment: the thyristor drive unit includes a thyristor U5 and a transistor Q3; one side of the thyristor U5 is connected to the transistor Q3, and the transistor Q3 is connected to the LIN input live wire and the L_OUT1 output live wire; the other side of the thyristor U5 is connected to a transistor Q4, and the transistor Q4 is connected to the main control microcontroller unit through a resistor R28.

[0012] Preferably, the power supply unit includes an AC / DC power conversion unit, a voltage conversion unit, and a voltage regulator unit; it is connected to the AC / DC power conversion unit via the LIN input live wire and the N neutral wire. The AC / DC power conversion unit converts the input power into 12V DC power and provides it to the drive unit. The voltage conversion unit converts the 12V voltage into 3.8V voltage and provides it to the communication unit. The voltage regulator unit converts the 3.8V voltage into 3.3V voltage and provides it to the active microcontroller unit.

[0013] This invention, by detecting whether the switch unit is properly engaged, can greatly reduce the probability of fault diagnosis errors and shorten the maintenance cycle for maintenance personnel.

[0014] This invention can connect to a remote software platform, quickly notify maintenance personnel of failures, reduce the maintenance burden on maintenance personnel, and improve maintenance efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a flowchart of this utility model.

[0017] Figure 3 This is the circuit diagram of the main control microcontroller unit of this utility model.

[0018] Figure 4 This is the circuit diagram of the communication module of this utility model.

[0019] Figure 5 This is a schematic diagram of the thyristor driving circuit of this utility model.

[0020] Figure 6 This is the relay drive circuit diagram of this utility model.

[0021] Figure 7 This is the circuit diagram of the attraction detection unit of this utility model. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0023] Example 1

[0024] A street light controller includes a power supply unit, a communication unit, a main control microcontroller unit, and street light equipment. It also includes a detection unit. The power supply unit provides power to the main control microcontroller unit, the communication unit, and the detection unit. The communication unit communicates with input signals and transmits them to the main control microcontroller unit. The main control microcontroller unit processes the received signals and feeds back control signals to the street light equipment. The detection unit detects the street light equipment and transmits the detected signals to the main control microcontroller unit.

[0025] The detection unit includes a switch unit, a switch driving unit, and a switch engagement detection unit; the main control microcontroller unit is connected to the switch unit via the switch driving unit and provides driving signals to the switch unit; the main control microcontroller unit provides detection signals to the switch engagement detection unit, which controls the street light equipment.

[0026] Figure 4 In the process, the switch engagement detection unit includes an optocoupler module U1, a current-limiting resistor unit, and a rectifier diode; the input AC voltage signal is rectified by the rectifier diode and limited by the current-limiting resistor unit before being input to the drive terminal of the optocoupler module U1; the output terminal of the optocoupler module U1 is connected to the main control microcontroller unit.

[0027] The switching unit includes a relay, and the switching detection unit is a relay driving unit; Figure 6In the relay drive unit, there are transistor Q1, diode D2, resistor R8, resistor R7 and relay K1. One side of relay K1 is connected to the LIN input live wire and the L_OUT1 output live wire; the other side of relay K1 is connected to diode D2. One end of diode D2 is connected to the voltage, and the other end is connected to transistor Q1. One end of transistor Q1 is connected to ground. The third end of transistor Q1 is connected to resistors R8 and R7. The other end of resistor R8 is grounded, and the other end of resistor R7 is connected to the main control microcontroller unit.

[0028] The power supply unit includes an AC / DC power conversion unit, a voltage conversion unit, and a voltage regulator unit. It is connected to the AC / DC power conversion unit via the LIN input live wire and the N neutral wire. The AC / DC power conversion unit converts the input power into 12V DC power and provides it to the drive unit. The voltage conversion unit converts the 12V voltage into 3.8V voltage and provides it to the communication unit. The voltage regulator unit converts the 3.8V voltage into 3.3V voltage and provides it to the active microcontroller unit.

[0029] Figure 1 The connection shown is between LIN (live wire input) and N (neutral wire), which is connected to an AC-DC power supply outputting 12VDC voltage to provide the drive voltage for the relay. The 12VDC voltage is converted to 3.8VDC voltage by a DC-DC circuit to provide power to the communication unit. Further, the 3.8VDC voltage is converted to 3.3VDC voltage by an LDC circuit to provide power to the main control microcontroller unit and its peripheral circuits. The main control microcontroller unit connects to the relay via the relay drive circuit, providing the relay with a drive signal; on the other end, the main control microcontroller unit receives the relay output signal via the relay output detection circuit. The main control microcontroller unit then connects to the communication unit to interact with the remote software platform. One end of the relay is connected to LIN (live wire input), and the other end is connected to L_OUT1 (live wire output), which is connected to the street light equipment.

[0030] When the main control microcontroller unit provides a high-level Relay1 drive signal, transistor Q1 conducts, the relay drive coil receives a 12V drive voltage, the relay is energized, LIN (live wire input) and L_OUT1 (live wire output) are connected, and the street light equipment is powered on. When the main control microcontroller unit provides a low-level Relay1 drive signal, transistor Q1 is cut off, the 12V drive voltage to the relay drive coil is disconnected, the relay is de-energized, LIN (live wire input) and L_OUT1 (live wire output) are disconnected, and the street light equipment is powered off.

[0031] The relay output detection circuit works as follows: When the relay is energized, a 220VAC AC voltage is applied between L_OUT1 and N. This AC voltage undergoes half-wave rectification via diode D16, is current-limited by resistors R1, R2, R3, and R4, and flows through the drive pin of optocoupler U1. The output pin RelayOK of optocoupler U1 is connected to a 3.3V voltage via resistor R6 and is then connected to the main control microcontroller unit. When the AC signal exceeds the drive current of U1, the output pin of U1 conducts, and RelayOK goes low. When the AC signal is lower than the drive current of U1, the output pin of U1 is cut off, and RelayOK goes high. This process repeats, so when the relay is energized, the MCU receives a PWM waveform of a certain frequency. When the relay is de-energized, the MCU receives a continuous high level.

[0032] Example 2

[0033] Based on Example 1, this example uses a thyristor; the switch detection unit is a thyristor drive unit.

[0034] Figure 5 In the thyristor drive unit, there are thyristor U5 and transistor Q3; one side of thyristor U5 is connected to transistor Q3, and transistor Q3 is connected to the LIN input live wire and the L_OUT1 output live wire; the other side of thyristor U5 is connected to transistor Q4, and transistor Q4 is connected to the main control microcontroller unit through resistor R28.

[0035] Example 3

[0036] Based on the above embodiments, such as Figure 2 The logic diagram shows that when the relay drive signal Relay1 is high and the detection signal RelayOK is a PWM waveform, the MCU determines that the relay is normal; when both the relay drive signal Relay1 and the detection signal RelayOK are high, the MCU determines that the relay is faulty; when the relay drive signal Relay1 is low and the detection signal RelayOK is a PWM waveform, the MCU determines that the relay is faulty; and when both the relay drive signal Relay1 and the detection signal RelayOK are high, the MCU determines that the relay is normal.

Claims

1. A street light controller comprising a power supply unit, a communication unit, a master control single-chip microcomputer unit and a street light device, characterized by, The application also comprises a detection unit, a power supply unit for providing power supply to the master single-chip microcomputer unit, the communication unit and the detection unit; the communication unit is used for communicating the input signal and transmitting the input signal to the master single-chip microcomputer unit; the master single-chip microcomputer unit is used for processing the received signal and feeding back the control signal to the street lamp equipment; the detection unit is used for detecting the street lamp equipment and transmitting the detected signal to the master single-chip microcomputer unit. The detection unit comprises a switch unit, a switch driving unit and a switch attraction detection unit; the master single-chip microcomputer unit is connected to the switch unit through the switch driving unit and provides driving signal to the switch unit; the master single-chip microcomputer unit provides detection signal to the switch attraction detection unit to control the street lamp equipment through the switch attraction detection unit; the switch attraction detection unit comprises an optocoupler module U1, a current-limiting resistor unit and a rectifier diode; the input AC voltage signal is rectified by the rectifier diode and input to the driving end of the optocoupler module U1 after current-limiting by the current-limiting resistor unit; the output end of the optocoupler module U1 is connected to the master single-chip microcomputer unit.

2. A street light controller according to claim 1, wherein: The switch unit comprises a relay or a thyristor; the switch detection unit corresponds to a relay driving unit and a thyristor driving unit.

3. The street light controller of claim 1, wherein: The relay driving unit comprises a triode Q1, a diode D2, a resistor R8, a resistor R7 and a relay K1; one side of the relay K1 is connected to the LIN input live wire and the L_OUT1 output live wire; the other side of the relay K1 is connected to the diode D2, one end of the diode D2 is connected to the voltage, the other end is connected to the triode Q1, one end of the triode Q1 is connected to the ground, the third end of the triode Q1 is connected to the resistor R8 and the resistor R7, the other end of the resistor R8 is grounded, and the other end of the resistor R7 is connected to the master single-chip microcomputer unit.

4. The street light controller of claim 1, wherein: The thyristor driving unit comprises a thyristor U5 and a triode Q3; one side of the thyristor U5 is connected to the triode Q3, and the triode Q3 is connected to the LIN input live wire and the L_OUT1 output live wire; one side of the other side of the thyristor U5 is connected to a triode Q4, and the triode Q4 is connected to the master single-chip microcomputer unit through a resistor R28.

5. The street light controller of claim 1, wherein: The power supply unit comprises an AC / DC power supply conversion unit, a voltage conversion unit and a voltage stabilizing unit; the AC / DC power supply conversion unit is connected to the LIN input live wire and the N zero line, converts the input power supply into 12V DC power supply, provides the driving unit, the voltage conversion unit converts the 12V voltage into 3.8V voltage, provides the communication unit, and the voltage stabilizing unit converts the 3.8V voltage into 3.3V voltage and provides the master single-chip microcomputer unit.

Images