Controller for LED street lamp
By designing an LED street light controller with integrated brightness detection, radar detection and clock calendar functions, the problem of inaccurate street light control in the existing technology is solved, and accurate and intelligent control of LED street lights is achieved.
Patent Information
- Application Number
- CN202420970961.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2034-05-07
AI Technical Summary
It is difficult for existing street light control technology to accurately adjust the lighting and extinguishing status of street lights in real time according to the environmental brightness and human activities, resulting in the inability to accurately control the switching of street lights.
A controller for LED street lights was designed. The controller collects environmental brightness, radar detection data and clock calendar information through integrated brightness detection module, radar detection module and clock calendar module, and transmits driving instructions through the control chip to achieve Accurate control of LED street lights.
By collecting a variety of data and combining clock calendar information, more accurate and intelligent control of LED street lights is achieved, avoiding the problem of not lighting up when dark or not extinguishing after dawn, and improving the accuracy and reliability of street light control .
Smart Images
Figure CN222484961U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of street lamp control, and in particular to a controller for an LED street lamp. Background Art
[0002] Street lights are luminous lighting systems on roads, streets and public squares, which are usually turned on at night or dark and turned off after dawn.
[0003] Currently, most street light controls are turned on or off directly at a determined time, or are controlled based on a single sensor parameter (such as ambient brightness). This can easily lead to street lights not being turned on when it gets dark, or remaining on after daybreak, making it impossible to accurately control the street lights. Utility Model Content
[0004] An embodiment of the present application provides a controller for an LED street lamp, which collects ambient brightness and radar detection data and combines clock calendar information to light up or extinguish the LED street lamp, so as to more accurately control the LED street lamp.
[0005] The controller includes a shell and a control chip, a driving module, a brightness detection module, a clock calendar module, a radar detection module and a power supply module arranged in the shell. The control chip is used to obtain environmental brightness information, clock calendar information and radar detection data, and send a driving instruction to the driving module; the driving module is connected to the control chip and is used to send a driving signal to the LED street lamp to turn on or off the LED street lamp; the brightness detection module is connected to the brightness sensor and the control chip, and is used to obtain the environmental brightness information collected by the brightness sensor, and send the environmental brightness information to the control chip; the clock calendar module is connected to the control chip and is used to provide clock calendar information to the control chip; the radar detection module is connected to the radar and the control chip, and is used to obtain radar detection data of the radar within a preset range around the LED street lamp, and send the radar detection data to the control chip; the power supply module is connected to the control chip and the clock calendar module, and is used to power the control chip and the clock calendar module.
[0006] By applying the above technical scheme, the controller for the LED street lamp includes a shell and a control chip, a drive module, a brightness detection module, a clock calendar module, a radar detection module and a power supply module arranged in the shell. The control chip obtains ambient brightness information, clock calendar information and radar detection data from the brightness detection module, the clock calendar module and the radar detection module respectively, and sends a drive instruction to the drive module to light up or turn off the corresponding LED street lamp, so that the controller can light up or turn off the LED street lamp by collecting ambient brightness and radar detection data and combining the clock calendar information, thereby achieving more accurate control of the LED street lamp. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0008] Figure 1 This is a schematic diagram of the structure of a controller for an LED street lamp according to an embodiment of the present application;
[0009] Figure 2 This is a schematic structural diagram of a controller for an LED street lamp according to another embodiment of the present application;
[0010] Figure 3 This is a schematic diagram of the structure of the anti-disassembly protection module according to an embodiment of the present application;
[0011] Figure 4 This is a schematic diagram of the structure of the reset module in an embodiment of the present application;
[0012] Figure 5 This is a schematic diagram of the structure of an external power supply circuit according to an embodiment of the present application;
[0013] Figure 6 This is a schematic diagram of the structure of the power supply indication circuit of an embodiment of the present application;
[0014] Figure 7 This is a schematic diagram of the structure of the internal power supply circuit of an embodiment of the present application;
[0015] Figure 8 A schematic diagram of the structure of a crystal oscillator module according to an embodiment of the present application;
[0016] Fig. 9 This is a schematic diagram of the structure of a radar detection module according to an embodiment of the present application;
[0017] Fig.10 This is a schematic diagram of the structure of the clock calendar module of an embodiment of the present application;
[0018] Fig.11 This is a schematic diagram of the structure of a brightness detection module according to an embodiment of the present application;
[0019] Fig.12 This is a schematic diagram of the structure of the control chip of an embodiment of the present application;
[0020] Fig.13 This is a schematic diagram of the effects of 6 LED street lamps in the embodiment of the present application. DETAILED DESCRIPTION
[0021] Various aspects and features of the present application are described herein with reference to the accompanying drawings.
[0022] It should be understood that various modifications may be made to the embodiments of the present application. Therefore, the above description should not be considered as limiting, but only as an example of an embodiment. Other modifications within the scope and spirit of the present application will occur to those skilled in the art.
[0023] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the general description of the present application given above and the detailed description of the embodiments given below, serve to explain the principles of the present application.
[0024] These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.
[0025] It should also be understood that although the present application has been described with reference to some specific examples, those skilled in the art will be able to readily implement many other equivalent forms of the present application.
[0026] The above and other aspects, features and advantages of the present application will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.
[0027] Specific embodiments of the present application are described hereinafter with reference to the accompanying drawings; however, it should be understood that the embodiments applied for are merely examples of the present application, which may be implemented in a variety of ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that obscure the present application. Therefore, the specific structural and functional details applied for herein are not intended to be limiting, but merely serve as a basis and representative basis for the claims to teach those skilled in the art to use the present application in a variety of ways with substantially any suitable detailed structure.
[0028] This specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," all of which may refer to one or more of the same or different embodiments according to the present application.
[0029] A controller for an LED street lamp in an embodiment of the present application includes a shell and a control chip, a drive module, a brightness detection module, a clock calendar module, a radar detection module and a power supply module arranged in the shell. The control chip obtains ambient brightness information, clock calendar information and radar detection data from the brightness detection module, the clock calendar module and the radar detection module respectively, and sends a drive instruction to the drive module to light up or extinguish the corresponding LED street lamp, so that the controller can light up or extinguish the LED street lamp by collecting ambient brightness and radar detection data and combining the clock calendar information, thereby achieving more accurate control of the LED street lamp.
[0030] like Figure 1 As shown, the controller includes a housing (not shown) and a control chip 10, a driving module 20, a brightness detection module 30, a clock calendar module 40, a radar detection module 50 and a power supply module 60 arranged in the housing.
[0031] The control chip 10 is used to obtain the ambient brightness information, the clock calendar information and the radar detection data, and send the driving instructions to the driving module 20;
[0032] The driving module 20 is connected to the control chip 10 and is used to send a driving signal to the LED street lamp 21 to turn on or off the LED street lamp 21;
[0033] The brightness detection module 30 is connected to the brightness sensor 31 and the control chip 10, and is used to obtain the ambient brightness information collected by the brightness sensor 31 and send the ambient brightness information to the control chip 10;
[0034] The clock calendar module 40 is connected to the control chip 10 and is used to provide clock calendar information to the control chip 10;
[0035] The radar detection module 50 is connected to the radar 51 and the control chip 10, and is used to obtain the radar detection data of the radar 51 within a preset range around the LED street lamp 21, and send the radar detection data to the control chip 10;
[0036] The power supply module 60 is connected to the control chip 10 and the clock calendar module 40 , and is used to supply power to the control chip 10 and the clock calendar module 40 .
[0037] In this embodiment, the LED street lamp 21 is a street lamp using LED as a light source. The controller for the LED street lamp includes a housing and a control chip 10 disposed in the housing, a drive module 20, a brightness detection module 30, a clock calendar module 40, a radar detection module 50 and a power supply module 60.
[0038] The power supply module 60 supplies power to the control chip 10 and the clock calendar module 40, and the driving module 20, the brightness detection module 30 and the radar detection module 50 obtain power from the control chip 10. When controlling the LED street lamp 21, the brightness detection module 30 obtains the ambient brightness information collected by the brightness sensor 31, and sends the ambient brightness information to the control chip 10. At the same time, the radar detection module 50 obtains the radar detection data of the radar 51 within the preset range around the LED street lamp 21, and sends the radar detection data to the control chip 10. At the same time, the clock calendar module 40 provides the clock calendar information to the control chip 10. The control chip 10 obtains the ambient brightness information, the clock calendar information and the radar detection data, and sends a driving instruction to the driving module 20 to turn on or off the corresponding LED street lamp 21. For example, if it is determined at night based on the ambient brightness information and the clock calendar information, and the radar detection data indicates that a vehicle or pedestrian is passing by, the control chip 10 sends a drive instruction to the drive module 20 to light up the LED street light 21. Optionally, the LED street light 21 represents one or more LED street lights, and all of the LED street lights can be lit, or some of the LED street lights can be lit according to the location of the vehicle or pedestrian to save energy.
[0039] Optionally, the drive instruction may be generated by the controller, or generated by a host computer and then sent to the controller.
[0040] A controller for an LED street lamp in an embodiment of the present application includes a housing and a control chip 10, a drive module 20, a brightness detection module 30, a clock calendar module 40, a radar detection module 50 and a power supply module 60 arranged in the housing. The control chip 10 is used to obtain environmental brightness information, clock calendar information and radar detection data, and send a drive instruction to the drive module 20; the drive module 20 is connected to the control chip 10 and is used to send a drive signal to the LED street lamp 21 to turn on or off the LED street lamp 21; the brightness detection module 30 is connected to the brightness sensor 31 and the control chip 10. The chip 10 is used to obtain the ambient brightness information collected by the brightness sensor 31 and send the ambient brightness information to the control chip 10; the clock calendar module 40 is connected to the control chip 10 and is used to provide the clock calendar information to the control chip 10; the radar detection module 50 is connected to the radar 51 and the control chip 10, and is used to obtain the radar detection data of the radar 51 within the preset range around the LED street lamp 21, and send the radar detection data to the control chip 10; the power supply module 60 is connected to the control chip 10 and the clock calendar module 40, and is used to supply power to the control chip 10 and the clock calendar module 40. The control chip 10 obtains the ambient brightness information, the clock calendar information and the radar detection data from the brightness detection module 30, the clock calendar module 40 and the radar detection module 50 respectively, and sends a driving instruction to the driving module 20 to light up or turn off the corresponding LED street lamp 21, so that the controller can light up or turn off the LED street lamp 21 by collecting the ambient brightness and radar detection data and combining the clock calendar information, thereby realizing more accurate control of the LED street lamp.
[0041] In some embodiments of the present application, Figure 2 As shown, the controller also includes:
[0042] The anti-disassembly protection module 70 is connected to the control chip 10 and is used to output an opening signal to the control chip 10 when the shell is opened, so that the control chip 10 enters a preset protection state.
[0043] In this embodiment, if the housing of the controller is opened, it indicates that there may be physical damage or illegal disassembly. In order to ensure safety and reliability, an anti-disassembly protection module 70 is provided. When the housing is opened, the anti-disassembly protection module 70 can output an opening signal to the control chip 10 to make the control chip 10 enter a preset protection state, thereby realizing anti-disassembly protection for the controller and improving the safety of the controller. The control chip 10 can enter the preset protection state by turning off the corresponding function (such as stopping the drive module 20 from sending a drive instruction, etc.).
[0044] In some embodiments of the present application, Figure 3As shown, the anti-disassembly protection module 70 includes a protection switch SW1 and a first resistor R1, one end of the protection switch SW1 is grounded, and the other end of the protection switch SW1 is connected to the control chip 10 via the first resistor R1, wherein the protection switch SW1 includes a key handle fixedly connected to the inner side of the shell, the key handle is in a pressed state when the shell is not opened, so that the two ends of the protection switch SW1 are conductive, and the key handle is in a pop-up state when the shell is opened, so that the two ends of the protection switch SW1 are disconnected.
[0045] In this embodiment, the anti-disassembly protection module 70 includes a protection switch SW1 and a first resistor R1. The other end of the protection switch SW1 is connected to the corresponding pin of the control chip 10 via the first resistor 1R. The protection switch SW1 includes a key handle fixedly connected to the inner side of the shell. When the shell is not opened, the key handle is pressed, and the two ends of the protection switch SW1 are connected. When the shell is not opened, the key handle pops open, and the two ends of the protection switch SW1 are disconnected. The control chip 10 can determine that the shell is opened when the corresponding pin is detected to be at a low level, and enter a preset protection state, thereby improving the reliability of the anti-disassembly protection module 70.
[0046] In some embodiments of the present application, Figure 2 As shown, the controller also includes:
[0047] The communication module 80 is connected to the control chip 10 and is used to establish a communication connection between the host computer and the control chip 10;
[0048] The control chip 10 is further configured to receive an unlocking instruction sent by a host computer through the communication module 80 , and enter a working state from a preset protection state based on the unlocking instruction.
[0049] In this embodiment, by setting the communication module 80, the control chip 10 can communicate with the host computer. The controller can transmit the ambient brightness information, clock calendar information and radar detection data to the host computer through the communication module 80. The host computer generates a driving instruction and sends it to the control chip 10 through the communication module 80, so that the control chip 10 sends the driving instruction to the driving module 20. In addition, after the control chip 10 enters the preset protection state due to the shell being opened, the control chip 10 can save the opening record this time and accumulate it, so that the staff can query the number of times the shell has been opened. At the same time, the control chip 10 uploads the opening record this time to the host computer through the communication module 80, and then waits for the host computer to send an unlocking instruction. If there is no unlocking instruction, the control chip 10 is always in the preset protection state. When the host computer sends an unlocking instruction, the control chip 10 automatically returns to a normal working state, thereby further improving the safety of the controller.
[0050] In some embodiments of the present application, Figure 2 As shown, the controller also includes:
[0051] The reset module 90 is connected to the control chip 10 and is used to send a reset signal to the control chip 10 after the controller is powered on, so as to reset the control chip 10;
[0052] The crystal oscillator module 100 is connected to the control chip 10 and is used to generate an AC wave of a preset frequency to provide a clock for the control chip 10 .
[0053] In this embodiment, the reset module 90 sends a reset signal to the control chip 10 after the controller is powered on, so that the control chip 10 is reset, so that the control chip 10 can work normally. In the specific application scenario of this application, the reset signal is a low-level pulse signal. The crystal oscillator module 100 generates an AC wave of a preset frequency to provide a clock for the control chip 10 so that the control chip 10 can work normally. In the specific application scenario of this application, the preset frequency is a 24MHz AC wave.
[0054] In some embodiments of the present application, Figure 4 As shown, the reset module 90 includes a second resistor R2 and a first capacitor C1, one end of the second resistor R2 is connected to the first voltage, the other end of the second resistor R2 and one end of the first capacitor C1 are connected to the control chip 10, and the other end of the first capacitor C1 is grounded. The first voltage can be specifically 3.3V.
[0055] In some embodiments of the present application, Figure 8 As shown, the crystal oscillator module 100 includes a thirteenth capacitor C13, a fourteenth capacitor C14 and a crystal oscillator X1. Both ends of the crystal oscillator X1 are connected to the control chip 10, and both ends of the crystal oscillator X1 are grounded via the thirteenth capacitor C13 and the fourteenth capacitor C14 respectively.
[0056] In some embodiments of the present application, the power supply module 60 includes:
[0057] An external power supply circuit, connected to the control chip 10, for supplying power to the control chip 10 through an external power supply;
[0058] A power supply indication circuit, connected to an external power supply circuit, for indicating a power supply status of the external power supply circuit;
[0059] The internal power supply circuit is connected to the control chip 10 and the clock calendar module 40 and is used to supply power to the control chip 10 and the clock calendar module 40 through a battery.
[0060] In this embodiment, the external power supply circuit supplies power to the control chip 10 through an external power supply, and the power supply indication circuit indicates the power supply status of the external power supply circuit. When the power supply status of the external power supply circuit is abnormal, the internal power supply circuit supplies power to the control chip 10 and the clock calendar module 40 through a battery, thereby further improving the operating reliability of the controller.
[0061] In some embodiments of the present application, Figure 5 and Figure 6 As shown, the external power supply circuit includes a self-recovery fuse F1, a transient voltage suppression tube D1, a Schottky diode D2, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, a tenth capacitor C10 and a power supply chip U2, and the power supply indication circuit includes a third resistor R3 and a light emitting diode D3, wherein,
[0062] One end of the resettable fuse F1 is connected to the positive electrode of the external power supply, the other end of the resettable fuse F1 is connected to the cathode of the transient voltage suppression tube D1 and the anode of the Schottky diode D2, the anode of the transient voltage suppression tube D1 is connected to the negative electrode of the external power supply, the cathode of the Schottky diode D2, one end of the second capacitor C2, one end of the third capacitor C3 and the input end of the power supply chip U2 are connected to the second voltage, the other end of the second capacitor C2, the other end of the third capacitor C3 and the ground end of the power supply chip U2 are grounded, the output end of the power supply chip U2 outputs the first voltage, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9 and the tenth capacitor C10 are connected in parallel between the output end of the power supply chip U2 and the ground, the second capacitor C2 and the fourth capacitor C4 are electrolytic capacitors, one end of the third resistor R3 is connected to the first voltage, the other end of the third resistor R3 is connected to the anode of the light-emitting diode D3, and the cathode of the light-emitting diode D3 is grounded.
[0063] In this embodiment, the external power supply can be a 5V DC power supply. When the current of the subsequent circuit is greater than the protection threshold of the resettable fuse F1, the resettable fuse F1 can automatically disconnect and stop the external power supply to play an overcurrent protection function; when the current of the subsequent circuit is less than the protection threshold of the resettable fuse F1, the resettable fuse F1 can automatically resume to supply power to the subsequent circuit, and the control chip 10 can resume working. In the specific application scenario of this application, the model of the resettable fuse F1 is JK-MSMD020-60V, and the protection threshold is 200MA.
[0064] The positive pole of the external power supply is connected to the cathode of the transient voltage suppressor D1 through the self-resetting fuse F1, and the anode of the transient voltage suppressor D1 is connected to the negative pole of the power supply. When the external power supply voltage is higher than the protection threshold of the transient voltage suppressor D1, the transient voltage suppressor D1 will reverse conduction and discharge the excessive voltage to the negative pole of the power supply to play an overvoltage protection function. In the specific application scenario of this application, the model of the transient voltage suppressor D1 is SMAJ5.0, and the protection threshold is 5V.
[0065] The positive pole of the external power supply is connected to the anode of the Schottky diode D2 through the self-resetting fuse F1. If the power supply line is connected in reverse, since the Schottky diode D2 has the characteristics of forward power supply conduction and reverse power supply cutoff, the Schottky diode D2 is reversely powered and cut off, disconnecting the power supply of the subsequent stage, thus playing the role of preventing the external power supply line from being connected in reverse. In the specific application scenario of this application, the model of the Schottky diode D2 is SS34.
[0066] The power supply indication circuit includes a third resistor R3 and a light emitting diode D3. When the external power supply is connected, the light emitting diode D3 lights up to indicate that the external power supply is normal.
[0067] In some embodiments of the present application, Figure 7 As shown, the internal power supply circuit includes a first diode D4, a second diode D5, a battery BT1, an eleventh capacitor C11 and a twelfth capacitor C12, the anode of the first diode D4 is connected to the first voltage, the cathode of the first diode D4 is connected to the cathode of the second diode D5 and the output end of the internal power supply circuit, the positive electrode of the battery BT1 is connected to the anode of the second diode D5, the negative electrode of the battery BT1 is grounded, and the eleventh capacitor C11 and the twelfth capacitor C12 are connected in parallel between the cathode of the second diode D5 and the ground.
[0068] In this embodiment, the first diode D4 and the second diode D5 isolate the dual power supply to ensure that the external power supply is given priority. When there is no external power supply, the battery BT1 is used for power supply. When the control chip 10 is powered by an external power supply, the external power supply 3.3V provides the BTV voltage through the first diode D4. The first diode D4 is turned on with a voltage drop of about 0.2V. The voltage at the BTV end is 3.1V, which is higher than the battery BT1 voltage of 3V. At this time, the second diode D5 is turned off, and the battery BT1 does not supply power; when the controller is not powered by an external power supply, the first diode D4 is turned off, and there is no voltage at the BTV end. At this time, the second diode D5 is turned on, and the battery BT1 supplies power, and the battery BT1 only supplies power to the control chip 10 and the calendar clock circuit. When the control chip 10 detects that the battery BT1 is supplying power, it automatically shuts down all functions except the anti-disassembly detection function, and the control chip 10 enters a low power consumption mode to save power, and resumes normal operation when the external power supply is detected.
[0069] When there is no external power input, the control chip 10 and the clock calendar module 40 are automatically powered, so that when there is no external power supply, the clock calendar is not lost, and the control chip 10 enters low power consumption and still maintains the anti-disassembly function.
[0070] In some embodiments of the present application, the model of the control chip 10 is STC32G12K128. In a specific application scenario, such as Fig. 9 , Fig.10 , Fig.11The schematic diagrams of the structures of the radar detection module 50, the clock calendar module 40 and the brightness detection module 30 are shown respectively. Fig.12 As shown, the control chip 10 adopts STC32G12K128-35I-LQFP48, which is connected to the communication module 80 through pins 5, 6 and 7, connected to the crystal oscillator module 100 through pins 10 and 11, connected to the reset module 90 through pin 14, connected to the internal power supply circuit through pins 15 and 16, connected to the anti-disassembly protection module 70 through pin 21, connected to the radar detection module 50 through pins 45 and 46, connected to the clock calendar module 40 through pins 43 and 44, and connected to the brightness detection module 30 through pins 30 and 31.
[0071] The working principle of the controller for LED street lamps according to the embodiment of the present application is described below in combination with specific application scenarios.
[0072] The controller for LED street lamps in the embodiment of the present application is mainly used in places where multiple LED lamps are controlled, such as outdoor street lamps or factory buildings. Each controller controls the lighting and extinguishing of 6 LED street lamps, and the number of controllers is configured according to the number of LED street lamps. The first controller is installed on the lamp post of the first LED street lamp among the 6 LED street lamps corresponding to the next controller.
[0073] Control mode 1: The controller detects the current ambient brightness value through the brightness detection module, and determines whether it is daytime or nighttime through the control chip combined with the current calendar time calculation. When it is daytime, LED street lights 1-6 are not lit, and if they were lit before, they are immediately turned off; when it is nighttime, microwave radar is used to detect whether there are people or other moving objects approaching in front of and within 16 meters before and after the current LED street lights 1-6. When it is detected that no one or other moving objects are approaching, LED street lights 1-6 are not lit; when it is detected that someone or other moving objects are approaching, LED street lights 1-6 are lit; when it is detected that all people or other moving objects have left, LED street lights 1-6 are turned off.
[0074] Control mode 2: The communication module adopts RS485 communication. The controller receives the preset control strategy of the host computer through the communication module. According to the received preset control strategy, combined with the internal clock calendar of the controller and the ambient brightness detected by the brightness detection module, the LED street lights 1-6 are turned on or off according to different time periods.
[0075] The following are some examples:
[0076] For example, the preset control strategy set by the host computer is: in the period from dark to 22:00, light up LED street lights 1-6; in the period from 22:00 to 5:00 the next day, turn off LED street lights 1-6; in the period from 5:00 to dawn, light up LED street lights 1-6; in the period from dawn to dark, turn off LED street lights 1-6.
[0077] After receiving this preset control strategy, the controller starts to detect the current ambient brightness through the brightness detection module. When the controller determines that it is dark through the detected ambient brightness data, the LED street lights 1-6 are turned on. At this time, the controller reads the current time parameters through the clock calendar circuit in real time. When the time reaches 22:00, the LED street lights 1-6 are turned off. When the time reaches 5:00 the next day, the LED street lights 1-6 are turned on again. At this time, the controller again detects the current ambient brightness through the brightness detection circuit. When the controller determines that it is daylight through the detected ambient brightness data, the LED street lights 1-6 are turned off again. When it is determined that it is dark again, the LED street lights 1-6 are turned on again. This preset control strategy is cycled every day.
[0078] Control mode three:
[0079] The controller reads the current environment brightness value through the brightness detection module in real time, and compares the read current environment brightness value with the day and night boundary threshold (this value is manually set by the system and can be adjusted). When it is detected that the current environment brightness value is greater than the day and night boundary threshold, the system will judge it as daytime. At this time, all LED street lights are not lit, and the previously lit street lights are also extinguished; when it is less than or equal to the day and night boundary threshold, the system will judge it as night. At this time, the system will read the current clock calendar and compare it with the night interval time (the night interval time in different areas is different. The night interval time is manually set by the system and can be adjusted to prevent system judgment errors. This interval is generally longer than the night time. This judgment is mainly to detect whether the brightness detection module is damaged or blocked, such as setting it to 16:00-8:00 the next day). When the time is outside the night interval time, it is judged that the brightness detection module is damaged or blocked, and an alarm prompt message is issued to notify maintenance; when the time is within the night interval time, the radar detection data in each LED street lamp is read. The radar is centered on the LED street lamp and the detection radius is ≥16 meters. Through the radar detection data in each LED street light, control whether each LED street light is lit. When the radar detects that there is a person or other moving object within a radius of 16 meters of this LED street light, this street light will light up; when the radar detects that there is no person or other moving object within a radius of 16 meters of this LED street light, this LED street light will not light up. If a person or other moving object has just left, the current LED street light is lit and will be turned off at this time.
[0080] For example, if Fig.13 As shown, the controller controls 6 LED street lights. The specific process is as follows:
[0081] 1) When a person or other moving object approaches 16 meters in front of LED street light 1, only the radar of LED street light 1 detects a person or other moving object, and LED street light 1 lights up;
[0082] 2) When a person or other moving object approaches the center of LED street light 1, because the distance between each LED street light is 16 meters, the two LED street light radars have a cross detection area ≥ 16 meters. At this time, both LED street light 1 and LED street light 2 radars can detect people or other moving objects, so LED street light 1 and LED street light 2 are both lit;
[0083] 3) When a person or other moving object approaches the center of LED street light 2, the radars of LED street light 1, LED street light 2 and LED street light 3 can detect the person or other moving object, so LED street light 1, LED street light 2 and LED street light 3 are all lit;
[0084] 4) When a person or other moving object approaches the center of LED street light 3, the radars of LED street light 2, LED street light 3 and LED street light 4 can detect the person or other moving object, so LED street light 2, LED street light 3 and LED street light 4 are all lit;
[0085] 5) When a person or other moving object approaches the center of LED street light 4, the radars of LED street light 3, LED street light 4 and LED street light 5 can detect the person or other moving object, so LED street light 3, LED street light 4 and LED street light 5 are all lit;
[0086] 6) When a person or other moving object approaches the center of LED street light 5, the radars of LED street light 4, LED street light 5 and LED street light 6 can detect the person or other moving object, so LED street light 2, LED street light 3 and LED street light 4 are all lit;
[0087] 7) When a person or other moving object approaches the center of LED street light 6, the radars of LED street light 5, LED street light 6 and the second corresponding LED street light 7 (not shown in the figure) can detect the person or other moving object, so LED street light 5, LED street light 6 and LED street light 7 are all turned on, and so on;
[0088] 8) When there are no people or other moving objects within 16 meters around all street lights, all LED street lights will be turned off.
[0089] In addition, the controller will read the power consumption of each LED street lamp before and after lighting or turning off each LED street lamp. The power consumption of the LED street lamp when it is lit is different from that when it is turned off. The power consumption of each LED street lamp when it is lit is subtracted from the power consumption when it is turned off for comparison and judgment. When the power consumption difference is not equal and the difference is close to the power consumption range of this LED street lamp, it proves that this LED street lamp is working normally; when the power consumption difference is basically equal and the difference is less than the power consumption range of this LED street lamp, it proves that this LED street lamp is not working properly; when the controller detects that a certain LED street lamp is not working properly, the controller will promptly send the corresponding fault information to the user's designated mobile phone via SMS, and at the same time, send a fault alarm on the mobile phone APP user end and the PC user end to notify the user for maintenance.
[0090] The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application. The protection scope of the present application is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present application within the essence and protection scope of the present application, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present application.
Claims
1. A controller for LED street lamps, characterized in that: The controller includes a housing and a control chip, a driving module, a brightness detection module, a clock calendar module, a radar detection module and a power supply module arranged in the housing. The control chip is used to obtain ambient brightness information, clock calendar information and radar detection data, and send a driving instruction to the driving module; The driving module is connected to the control chip and is used to send a driving signal to the LED street lamp to light up or turn off the LED street lamp; The brightness detection module is connected to the brightness sensor and the control chip, and is used to obtain the ambient brightness information collected by the brightness sensor and send the ambient brightness information to the control chip; The clock calendar module is connected to the control chip and is used to provide clock calendar information to the control chip; The radar detection module is connected to the radar and the control chip, and is used to obtain radar detection data of the radar within a preset range around the LED street lamp, and send the radar detection data to the control chip; The power supply module is connected to the control chip and the clock calendar module, and is used to supply power to the control chip and the clock calendar module.
2. The controller for LED street lamp according to claim 1, characterized in that: The controller further comprises: The anti-disassembly protection module is connected to the control chip and is used to output an opening signal to the control chip when the shell is opened, so that the control chip enters a preset protection state.
3. The controller for LED street lamp according to claim 2, characterized in that: The anti-disassembly protection module includes a protection switch and a first resistor, one end of the protection switch is grounded, and the other end of the protection switch is connected to the control chip via the first resistor, wherein the protection switch includes a key handle fixedly connected to the inner side of the shell, the key handle is in a pressed state when the shell is not opened, so that the two ends of the protection switch are conductive, and the key handle is in a pop-up state when the shell is opened, so that the two ends of the protection switch are disconnected.
4. The controller for LED street lamp according to claim 2, characterized in that: The controller further comprises: A communication module, connected to the control chip, for establishing a communication connection between the host computer and the control chip; The control chip is further configured to receive an unlocking instruction sent by the host computer through the communication module, and enter a working state from the preset protection state based on the unlocking instruction.
5. The controller for LED street lamp according to claim 1, characterized in that: The controller further comprises: A reset module, connected to the control chip, and used to send a reset signal to the control chip after the controller is powered on, so as to reset the control chip; The crystal oscillator module is connected to the control chip and is used to generate an AC wave of a preset frequency to provide a clock for the control chip.
6. The controller for LED street lamp according to claim 5, characterized in that: The reset module includes a second resistor and a first capacitor, one end of the second resistor is connected to a first voltage, the other end of the second resistor and one end of the first capacitor are connected to the control chip, and the other end of the first capacitor is grounded.
7. The controller for LED street lamp according to claim 1, characterized in that: The power supply module comprises: An external power supply circuit, connected to the control chip, and used to supply power to the control chip through an external power supply; A power supply indication circuit, connected to the external power supply circuit, and used to indicate the power supply status of the external power supply circuit; The internal power supply circuit is connected to the control chip and the clock calendar module, and is used to supply power to the control chip and the clock calendar module through a battery.
8. The controller for LED street lamp according to claim 7, characterized in that: The external power supply circuit includes a self-recovering fuse, a transient voltage suppression tube, a Schottky diode, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, a tenth capacitor and a power supply chip, and the power supply indication circuit includes a third resistor and a light emitting diode, wherein, One end of the resettable fuse is connected to the positive electrode of the external power supply, the other end of the resettable fuse is connected to the cathode of the transient voltage suppression tube and the anode of the Schottky diode, the anode of the transient voltage suppression tube is connected to the negative electrode of the external power supply, the cathode of the Schottky diode, one end of the second capacitor, one end of the third capacitor and the input end of the power supply chip are connected to the second voltage, the other end of the second capacitor, the other end of the third capacitor and the ground end of the power supply chip are grounded, the output end of the power supply chip outputs a first voltage, the fourth capacitor, the fifth capacitor, the sixth capacitor, the seventh capacitor, the eighth capacitor, the ninth capacitor and the tenth capacitor are connected in parallel between the output end of the power supply chip and the ground, the second capacitor and the fourth capacitor are electrolytic capacitors, one end of the third resistor is connected to the first voltage, the other end of the third resistor is connected to the anode of the light-emitting diode, and the cathode of the light-emitting diode is grounded.
9. The controller for LED street lamp according to claim 7, characterized in that: The internal power supply circuit includes a first diode D4, a second diode, a battery, an eleventh capacitor and a twelfth capacitor, the anode of the first diode D4 is connected to a first voltage, the cathode of the first diode D4 is connected to the cathode of the second diode and the output end of the internal power supply circuit, the positive electrode of the battery is connected to the anode of the second diode, the negative electrode of the battery is grounded, and the eleventh capacitor and the twelfth capacitor are connected in parallel between the cathode of the second diode and the ground.
10. The controller for LED street lamp according to any one of claims 1 to 9, characterized in that: The model of the control chip is STC32G12K128.