Street lamp intelligent controller

Abstract

The utility model discloses an intelligent controller for a street lamp, and the controller comprises a main control module which is used for collecting the electric power parameters, the operation state, and the abnormal state of the street lamp in the working process; the stepless dimming module is used for outputting a PWM (Pulse Width Modulation) or DAC (Digital-to-Analog Converter) signal through the main control module to control the brightness of the streetlamp; the inclination monitoring module is used for monitoring the inclination state of the street lamp post and sending monitoring data to the main control module; and the power supply module comprises a linear power supply and a back-up power supply, the linear power supply is used for providing a direct-current power supply for the system, and the back-up power supply provides temporary power when the linear power supply breaks down or is interrupted. According to the intelligent street lamp controller, an innovative solution is provided for modern urban lighting management due to the characteristics of high efficiency, energy conservation, intelligence and reliability, and the intelligent level of urban infrastructures can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of street lamp control, in particular to an intelligent controller for street lamps. Background Art

[0002] With the rapid advancement of urbanization, street lights, as an important part of urban infrastructure, play an irreplaceable role in ensuring nighttime traffic safety and beautifying the urban environment. However, most traditional street light control methods use timed switches, which not only cannot be intelligently adjusted according to factors such as ambient brightness and weather conditions, resulting in energy waste and excessive lighting of the environment, but also cannot monitor the working status and abnormal conditions of street lights in real time, which brings great inconvenience to maintenance and management.

[0003] As for the main control module of the street lamp intelligent controller, in terms of power supply guarantee, the existing street lamp controllers often use a single power supply method. Once the main power supply fails or is interrupted, the entire system will be paralyzed, resulting in the street lamps being unable to be controlled normally. In addition, the degree of intelligence is low, and there is a lack of intelligent monitoring and diagnosis functions. Management personnel cannot understand the working status and fault conditions of the street lamps in a timely manner, and there are great limitations in the actual monitoring and use process.

[0004] Therefore, the utility model provides a new solution to solve this problem. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present utility model is to provide a street lamp intelligent controller.

[0006] The technical solution is: a street lamp intelligent controller, including:

[0007] A main control module, used for collecting power parameters, operating status and abnormal status of the street lamp during operation;

[0008] A stepless dimming module, used to control the brightness of the street lamp by outputting a PWM or DAC signal through a main control module;

[0009] A tilt monitoring module, used to monitor the tilt state of the street lamp pole and send the monitoring data to the main control module; and

[0010] The power supply module comprises a linear power supply and a backup power supply, wherein the linear power supply is used to provide a direct current power supply for the system, and the backup power supply provides temporary power when the linear power supply fails or is interrupted.

[0011] Preferably, the main control module includes a microcontroller and an electronic connector, and the microcontroller controls the on and off of the street lamp and the collection of power parameters through the electronic connector.

[0012] Preferably, the stepless dimming module includes at least one PWM / DAC control circuit, and the PWM / DAC control circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor, one end of the first resistor is connected to the DAC pin of the microcontroller, the other end of the first resistor and one end of the second resistor are connected to the P1 pin of the electronic connector, the other end of the second resistor is connected to a point between the first capacitor and the third resistor, the other end of the third resistor is connected to the second capacitor and one end of the fourth resistor, the other end of the fourth resistor is connected to the PWM pin of the microcontroller, and the other ends of the first capacitor and the second capacitor are grounded.

[0013] Preferably, the tilt monitoring module comprises a tilt sensor, and a detection signal end of the tilt sensor is connected to the microcontroller.

[0014] Preferably, the linear power supply includes a +5V power supply, a first step-down chip and a second step-down chip, the input end of the first step-down chip is connected to the +5V power supply and one end of the third capacitor, the ground end of the first step-down chip and the other end of the third capacitor are grounded, and the output end of the first step-down chip is connected to the +3.3V power supply terminal VCC; the input end of the second step-down chip is connected to the output end of the first step-down chip, one end of the first filter capacitor and one end of the fourth capacitor, the ground end of the second step-down chip, the other end of the first filter capacitor and the other end of the fourth capacitor are grounded, the output end of the second step-down chip is connected to one end of the fifth capacitor and the +1.8V power supply terminal VCC2, and the other end of the fifth capacitor is grounded.

[0015] Preferably, the backup power supply includes a Schottky diode D1, one end of the Schottky diode D1 is connected to the +3.3V power supply terminal VCC, the other end of the Schottky diode D1 is connected to the farad capacitor, the sixth capacitor, one end of the seventh capacitor and the power supply terminal of the microcontroller through a fifth resistor, and the other ends of the farad capacitor, the sixth capacitor and the seventh capacitor are grounded.

[0016] Preferably, it also includes a positioning module, the positioning module uses a GNSS chip, and the GNSS chip is connected to the microcontroller through a serial port.

[0017] Preferably, it also includes a wireless communication module, and the wireless communication module is a NB-IoT module, and the NB-IoT module communicates with the microcontroller through a UART interface.

[0018] Preferably, the main control module is also provided with a photoelectric temperature sensor, which is used to detect the ambient temperature and send a temperature detection signal to the microcontroller.

[0019] Preferably, the main control module is also connected to a status display module, and the status display module includes:

[0020] A first state display circuit, used for displaying the working state of the microcontroller;

[0021] The second status display circuit is used to display the working status of the wireless communication module.

[0022] Through the above technical solutions, the beneficial effects of the utility model are as follows: the intelligent street lamp controller of the present application provides a solution that integrates advanced intelligent technology to address the shortcomings of traditional street lamp control methods in the process of urbanization. The controller adopts stepless dimming technology to intelligently adjust the brightness of street lamps according to real-time ambient brightness and weather conditions, effectively avoiding the problems of energy waste and excessive lighting. At the same time, through the integrated tilt monitoring and temperature monitoring modules, real-time monitoring of the working status of street lamps is achieved, and the fault response and processing speed are improved. In addition, the dual power supply design of the controller, including a linear power supply and a backup power supply, ensures the stable operation of the system when the main power supply fails, and enhances the reliability of power supply. The intelligent street lamp controller of the present application, with its high efficiency, energy saving, intelligence and reliability, provides an innovative solution for modern urban lighting management, which helps to improve the intelligence level of urban infrastructure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a system module structure diagram of the utility model.

[0024] Figure 2 This is a circuit schematic diagram of a main control module and a wireless communication module according to an embodiment of the present utility model.

[0025] Figure 3 This is a circuit diagram of a stepless dimming module according to an embodiment of the present invention.

[0026] Figure 4 This is a circuit schematic diagram of a tilt monitoring module according to an embodiment of the present utility model.

[0027] Figure 5 This is a circuit diagram of a linear power supply according to an embodiment of the utility model.

[0028] Figure 6 This is a circuit diagram of a backup power supply according to an embodiment of the utility model.

[0029] Figure 7 The figure is a circuit diagram of a positioning module according to an embodiment of the present utility model.

[0030] Figure 8 The schematic diagram of the circuit of the photoelectric temperature sensor in one embodiment of the utility model is shown in FIG. DETAILED DESCRIPTION

[0031] The above and other technical contents, features and functions of the present invention are described in detail below with reference to the attached Figure 1 To Attachment Figure 8 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0032] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0033] like Figure 1 As shown, a street lamp intelligent controller includes:

[0034] The main control module is used to collect the power parameters, operating status and abnormal status of the street lamp during operation;

[0035] Stepless dimming module, used to control the brightness of street lamps through the output of PWM or DAC signal by the main control module;

[0036] A tilt monitoring module, used to monitor the tilt status of the street light pole and send the monitoring data to the main control module; and

[0037] The power supply module includes a linear power supply and a backup power supply. The linear power supply is used to provide DC power to the system, and the backup power supply provides temporary power when the linear power supply fails or is interrupted.

[0038] In the above, the main control module includes a microcontroller and an electronic connector. The microcontroller, as the core of the street lamp intelligent controller, is responsible for processing and coordinating the work between various modules. In the specific implementation process, Figure 2 As shown, the microcontroller can use the APM32F091RCT6 chip U1, which is a microcontroller based on the ARM Cortex-M0 processor, with high performance and low power consumption, suitable for control and data processing tasks. Its external pins are connected to the electronic connector H1 to control the on and off of the street lamp and the collection of power parameters.

[0039] The main control module controls the brightness of the street lamp by outputting PWM or DAC signals. In the specific setting, the stepless dimming module includes at least one PWM / DAC control circuit, and the PWM / DAC control circuit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor. One end of the first resistor is connected to the DAC pin of the microcontroller, the other end of the first resistor and one end of the second resistor are connected to the P1 pin of the electronic connector, the other end of the second resistor is connected to a point between the first capacitor and the third resistor, the other end of the third resistor is connected to the second capacitor and one end of the fourth resistor, the other end of the fourth resistor is connected to the PWM pin of the microcontroller, and the other ends of the first capacitor and the second capacitor are grounded.

[0040] This application takes the setting of two PWM / DAC control circuits as an example. Figure 3 As shown, PWM (pulse width modulation) and DAC (digital-to-analog converter) are two different stepless dimming technologies. In this embodiment, each PWM / DAC control circuit integrates the above two stepless dimming technologies into one. The control method can be selected for different application environments to control the brightness of the street lamp. In the specific implementation process, the PWM dimming principle of the microcontroller is to control the brightness of the street lamp by adjusting the pulse width of the output voltage, that is, to adjust the pulse width and duty cycle of the PWM signal to achieve brightness adjustment. DAC dimming converts the digital signal into an analog voltage signal through a digital-to-analog converter, and then adjusts the input voltage of the street lamp to control the brightness.

[0041] In actual use, the street light intelligent controller of the present application also integrates a tilt monitoring module to monitor whether the street light pole is tilted or collapsed, which is crucial for ensuring public safety and timely maintenance of street light facilities. Figure 4 As shown, the tilt monitoring module includes a tilt sensor U5. The detection signal end of the tilt sensor U5 is connected to a microcontroller. The detected tilt information is converted into an electrical signal and input into the microcontroller, thereby achieving real-time monitoring of the tilt state of the lamp pole.

[0042] It is understandable that in terms of system power supply, the design of the linear power supply and the backup power supply in this application provides double protection to ensure that the system can continue to operate when the main power supply fails. Figure 5 As shown, the linear power supply includes a +5V power supply, a first buck chip U7 and a second buck chip U6, the input end of the first buck chip U7 is connected to the +5V power supply and one end of the third capacitor, the ground end of the first buck chip U7 and the other end of the third capacitor are grounded, and the output end of the first buck chip U7 is connected to the +3.3V power supply end VCC; the input end of the second buck chip U6 is connected to the output end of the first buck chip U7, one end of the first filter capacitor and one end of the fourth capacitor, the ground end of the second buck chip U6, the other end of the first filter capacitor and the other end of the fourth capacitor are grounded, the output end of the second buck chip U6 is connected to one end of the fifth capacitor and the +1.8V power supply end VCC2, and the other end of the fifth capacitor is grounded. In the actual selection process, the first step-down chip U7 can use the linear voltage regulator model AZ1117CR-3.3TRG1, which can convert the +5V power supply into a stable +3.3V voltage output; the second step-down chip U6 can use the linear voltage regulator model LD1117AG-18-AB3-AR, which can convert the +3.3V power supply into a stable +1.8V voltage output, thereby providing the system with two power supplies, +3.3V power supply end VCC and +1.8V power supply end VCC2, to meet the power supply requirements of various modules of the street light intelligent controller.

[0043] like Figure 6 As shown, the backup power supply includes a Schottky diode D1, one end of the Schottky diode D1 is connected to the +3.3V power supply terminal VCC, and the other end of the Schottky diode D1 is connected to the farad capacitor C2, the sixth capacitor, and one end of the seventh capacitor and the power supply terminal of the microcontroller through the fifth resistor, and the other end of the farad capacitor C2, the sixth capacitor and the seventh capacitor is grounded. During the operation of the backup power supply, the +3.3V power supply terminal VCC first charges the farad capacitor C2, and the Schottky diode D1 plays a role in charging protection during the charging process of the farad capacitor C2. The farad capacitor is also called a supercapacitor or supercapacitor. It is a capacitor that can store a relatively large amount of charge. In this embodiment, the capacity of the farad capacitor C2 is 1F, which can achieve sufficient backup power storage for the system. Compared with the traditional button battery energy storage solution, the use of farad capacitors in this application can provide a longer hardware life and reduce the later operation and maintenance costs.

[0044] The present application also includes a positioning module, which uses a GNSS chip, and the GNSS chip is connected to the microcontroller via a serial port. Figure 7 As shown, this embodiment adopts the domestic GNSS chip U4, based on the high-precision positioning, time calibration and geographic coordinate parameter collection of the Beidou and GPS dual-mode satellite systems to achieve accurate positioning of street lamps.

[0045] At the same time, the system is also equipped with a wireless communication module, such as Figure 2 As shown in the figure, the NB-IoT module U2 can be selected for specific settings. The NB-IoT module communicates with the microcontroller through the UART interface. The NB-IoT (Narrowband Internet of Things) module is a low-power wide area network (LPWAN) technology. In the street light intelligent controller, the data collected by the microcontroller (such as electrical parameters, working status, abnormal status, geographic information, etc.) can be remotely transmitted to the server or control center. And NB-IoT technology supports data encryption to ensure data security during transmission. The firmware of the street light intelligent controller can be upgraded remotely through the NB-IoT module without on-site operation, which improves the intelligence level and operation and maintenance efficiency of the system.

[0046] In the actual working process of the street lamp intelligent controller of this application, due to the complex and changeable external environment, especially when working under high temperature or strong sunlight conditions, the controller may encounter heating problems. Therefore, a photoelectric temperature sensor is also provided on the main control module. The photoelectric temperature sensor is used to detect the ambient temperature and send the temperature detection signal to the microcontroller. Figure 8As shown, the photoelectric temperature sensor continuously monitors the ambient temperature of the device of the present application to ensure immediate perception of temperature changes. The microcontroller continuously receives temperature data from the photoelectric temperature sensor and compares it with a preset safety threshold. Once it detects that the temperature exceeds the safety threshold, the microcontroller generates alarm data containing timestamp, device ID, current temperature and other information, and remotely transmits the alarm data to the server or control center through the wireless communication module, promptly notifying relevant personnel to take appropriate countermeasures, thereby greatly improving the safety and reliability of the system.

[0047] The main control module is also connected to a status display module, such as Figure 2 As shown, the status display module includes:

[0048] The first state display circuit is used to display the working state of the microcontroller; when the microcontroller is in normal working state, its pin 50 outputs a high level to the base of the transistor Q1 to turn it on, and then the indicator light LED1 is powered on and lights up; otherwise, it does not light up.

[0049] The second status display circuit is used to display the working status of the wireless communication module; when the wireless communication module is in normal working status, its network light pin outputs a high level to the base of the transistor Q3 to turn it on, and then the indicator light LED2 is powered on; otherwise it is not lit.

[0050] Through the two status display circuits of the status display module, the staff can quickly identify whether the two key components of the controller are working properly, which is convenient for the staff to repair.

[0051] In summary, the street lamp intelligent controller of the present application provides a solution that integrates advanced intelligent technology to address the shortcomings of traditional street lamp control methods in the process of urbanization. The controller adopts stepless dimming technology to intelligently adjust the brightness of street lamps according to real-time ambient brightness and weather conditions, effectively avoiding the problems of energy waste and excessive lighting. At the same time, through the integrated tilt monitoring and temperature monitoring modules, real-time monitoring of the working status of street lamps is achieved, and the fault response and processing speed are improved. In addition, the dual power supply design of the controller, including a linear power supply and a backup power supply, ensures the stable operation of the system when the main power supply fails, and enhances the reliability of power supply. The street lamp intelligent controller of the present application, with its high efficiency, energy saving, intelligence and reliability, provides an innovative solution for modern urban lighting management, which helps to improve the intelligence level of urban infrastructure.

[0052] The above is a further detailed description of the utility model in combination with a specific implementation method, and it cannot be determined that the specific implementation of the utility model is limited to this; for technical personnel in the field of the utility model and related technical fields, based on the technical solution of the utility model, the expansion and replacement of operating methods and data should all fall within the protection scope of the utility model.

Claims

1. A street lamp intelligent controller, characterized in that: include: A main control module, used for collecting power parameters, operating status and abnormal status of the street lamp during operation; A stepless dimming module, used to control the brightness of the street lamp by outputting a PWM or DAC signal through a main control module; A tilt monitoring module, used to monitor the tilt state of the street lamp pole and send the monitoring data to the main control module; as well as The power supply module comprises a linear power supply and a backup power supply, wherein the linear power supply is used to provide a direct current power supply for the system, and the backup power supply provides temporary power when the linear power supply fails or is interrupted.

2. According to claim 1, a street lamp intelligent controller is characterized in that: The main control module includes a microcontroller and an electronic connector. The microcontroller controls the on and off of the street lamp and the collection of power parameters through the electronic connector.

3. According to claim 2, a street lamp intelligent controller is characterized in that: The stepless dimming module includes at least one PWM / DAC control circuit, which includes a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor and a second capacitor. One end of the first resistor is connected to the DAC pin of the microcontroller, the other end of the first resistor and one end of the second resistor are connected to the P1 pin of the electronic connector, the other end of the second resistor is connected to the first capacitor and one end of the third resistor, the other end of the third resistor is connected to the second capacitor and one end of the fourth resistor, the other end of the fourth resistor is connected to the PWM pin of the microcontroller, and the other ends of the first capacitor and the second capacitor are grounded.

4. According to claim 3, a street lamp intelligent controller is characterized in that: The tilt monitoring module comprises a tilt sensor, and a detection signal end of the tilt sensor is connected to the microcontroller.

5. According to claim 4, a street lamp intelligent controller is characterized in that: The linear power supply includes a +5V power supply, a first buck chip and a second buck chip, the input end of the first buck chip is connected to the +5V power supply and one end of the third capacitor, the ground end of the first buck chip and the other end of the third capacitor are grounded, and the output end of the first buck chip is connected to the +3.3V power supply end VCC; the input end of the second buck chip is connected to the output end of the first buck chip, one end of the first filter capacitor and one end of the fourth capacitor, the ground end of the second buck chip, the other end of the first filter capacitor and the other end of the fourth capacitor are grounded, the output end of the second buck chip is connected to one end of the fifth capacitor and the +1.8V power supply end VCC2, and the other end of the fifth capacitor is grounded.

6. According to claim 4, a street lamp intelligent controller is characterized in that: The backup power supply includes a Schottky diode D1, one end of the Schottky diode D1 is connected to the +3.3V power supply terminal VCC, the other end of the Schottky diode D1 is connected to the farad capacitor, the sixth capacitor, one end of the seventh capacitor and the power supply terminal of the microcontroller through the fifth resistor, and the other ends of the farad capacitor, the sixth capacitor and the seventh capacitor are grounded.

7. The intelligent street lamp controller according to claim 2, characterized in that: It also includes a positioning module, which uses a GNSS chip. The GNSS chip is connected to the microcontroller through a serial port.

8. The intelligent street lamp controller according to claim 2, characterized in that: It also includes a wireless communication module, which uses a NB-IoT module. The NB-IoT module communicates with the microcontroller through a UART interface.

9. The intelligent street lamp controller according to claim 8, characterized in that: The main control module is also provided with a photoelectric temperature sensor, which is used to detect the ambient temperature and send a temperature detection signal to the microcontroller.

10. The intelligent street lamp controller according to claim 9, characterized in that: The main control module is also connected to a status display module, and the status display module includes: A first state display circuit, used for displaying the working state of the microcontroller; The second status display circuit is used to display the working status of the wireless communication module.

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