CN220568915U

CN220568915U - State monitoring circuit and intelligent street lamp

Info

Publication number: CN220568915U
Application number: CN202320342047.0U
Authority: CN
Inventors: 杨顺
Original assignee: Shenzhen Breezee Technology Co ltd
Current assignee: Shenzhen Breezee Technology Co ltd
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2024-03-08
Anticipated expiration: 2033-02-28

Abstract

The embodiment of the utility model discloses a state monitoring circuit and an intelligent street lamp, wherein the state monitoring circuit comprises a metering module, a main control module and an inclination detection module; the main control module is connected with the metering module and the inclination detection module; the metering module is used for detecting the voltage, the current and the electric leakage of the mains supply and outputting corresponding detection signals to the main control module; the inclination detection module is used for detecting the inclination state of the lamp post and outputting a corresponding inclination signal to the main control module; the main control module obtains a voltage value, a current value and a leakage value of the mains supply according to the detection signal; detecting the inclined state of the lamp post according to the inclined signal; the voltage value, the current value, the leakage value and the inclination state are also uploaded to the server through the communication circuit. The detection of the voltage value, the current value, the leakage value and the inclined state of the lamp post of the commercial power is realized, and the problem that the power supply state and the inclined state of the lamp post cannot be detected by the existing street lamp is solved.

Description

State monitoring circuit and intelligent street lamp

Technical Field

The utility model relates to the technical field of electronics, in particular to a state monitoring circuit and an intelligent street lamp.

Background

The existing street lamp only needs to supply power to the street lamp, does not perform any monitoring, cannot know the power supply state (including whether the commercial power is supplied or not, the voltage and current magnitude and the like), cannot find whether the lamp post inclines or not, and cannot report the street lamp fault, a large amount of manpower is required for inspection and investigation, and the operation and maintenance cost and the operation and maintenance difficulty are increased.

Disclosure of Invention

Aiming at the technical problems, the embodiment of the utility model provides a state monitoring circuit and an intelligent street lamp, which are used for solving the problem that the existing street lamp cannot detect the power supply state and the inclined state of a lamp post.

The embodiment of the utility model provides a state monitoring circuit which is connected with a communication circuit and comprises a metering module, a main control module and an inclination detection module; the main control module is connected with the metering module and the inclination detection module;

the metering module is used for detecting the voltage, the current and the electric leakage of the mains supply and outputting corresponding detection signals to the main control module;

the inclination detection module is used for detecting the inclination state of the lamp post and outputting a corresponding inclination signal to the main control module;

the main control module obtains a voltage value, a current value and a leakage value of the mains supply according to the detection signal; detecting the inclined state of the lamp post according to the inclined signal; the voltage value, the current value, the leakage value and the inclination state are also uploaded to the server through the communication circuit.

Optionally, the state monitoring circuit further comprises an adjusting module, wherein the adjusting module is connected with the main control module and the power supply end of the street lamp;

the adjusting module is used for controlling the on-off of the street lamp according to the switch signal output by the main control module and adjusting the brightness of the street lamp according to the dimming signal.

Optionally, the state monitoring circuit further comprises a charging detection module, wherein the charging detection module is connected with the main control module and the battery;

the charging detection module controls the charging state of the battery according to the charging enabling signal output by the main control module, performs partial pressure sampling on the battery voltage and transmits the partial pressure sampling to the main control module, and the main board module detects the battery voltage according to the size of the partial pressure voltage.

Optionally, in the state monitoring circuit, the metering module includes a metering chip, a first interface, a first optocoupler, a second optocoupler, a resistor string, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a fifth capacitor;

the VDD pin of the metering chip is connected with a first power supply end, the IP1 pin of the metering chip is connected with one end of a first resistor and one end of a first capacitor, the other end of the first capacitor is connected with zero line ground, the other end of the first resistor is connected with a zero line end, the IN1 pin of the metering chip is connected with one end of a second resistor and one end of the second capacitor, the other end of the second capacitor is connected with zero line ground, the IP2 pin of the metering chip is connected with one end of a third resistor and one end of the third capacitor, the other end of the third resistor is connected with zero line ground, the other end of the third resistor is connected with one end of a sixth resistor and the 2 pin of a first interface, the IN2 pin of the metering chip is connected with one end of a fourth resistor and one end of the fourth capacitor, the other end of the fourth resistor is connected with zero line ground, and the other end of the fourth resistor is connected with the other end of the sixth resistor and the 1 pin of the first interface; the VP pin of the metering chip is connected with one end of the fifth resistor, one end of the fifth capacitor and one end of the resistor string; the other end of the fifth capacitor and the other end of the fifth resistor are both connected with zero line ground, the other end of the resistor string is connected with a live wire end, and the GND pin of the metering chip and the SEL pin of the metering chip are both connected with zero line ground; the TX/SDO pin of the metering chip is connected with the 2 nd pin of the first optical coupler, the RX/SDI pin of the metering chip is connected with the 4 th pin of the second optical coupler, the 1 st pin of the first optical coupler is connected with the first power supply end, the 4 th pin of the first optical coupler and the 2 nd pin of the second optical coupler are both connected with the main control module, the 3 rd pin of the first optical coupler is grounded, the 1 st pin of the second optical coupler is connected with the second power supply end, and the 3 rd pin of the second optical coupler is connected with zero line ground.

Optionally, in the state monitoring circuit, the metering module further includes a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor;

the seventh resistor is connected between the 4 th pin of the first optical coupler and the second power supply end, the eighth resistor is connected between the 4 th pin of the second optical coupler and the first power supply end, the ninth resistor is connected between the 1 st pin of the first optical coupler and the first power supply end, the tenth resistor is connected between the 1 st pin of the second optical coupler and the second power supply end, the eleventh resistor is connected between the 2 nd pin of the second optical coupler and the second power supply end, and the twelfth resistor is connected between the 3 rd pin of the second optical coupler and zero line ground.

Optionally, in the state monitoring circuit, the main control module includes an MCU, a first diode, a thirteenth resistor and a fourteenth resistor;

the VBAT pin, the VREF pin and the VDD pin of the MCU are all connected with a second power supply end; the PA0/UART3_TX/ADC0 pin of the MCU is connected with the 2 nd pin of the second optocoupler, the PA1/UART3_RX/ADC1 pin of the MCU is connected with the 4 th pin of the first optocoupler, the BOOT1_PB2 pin of the MCU is grounded through a thirteenth resistor, the PA 9/I2C0_SCLpin and the PA10/I2C0_SDA pin of the MCU are both connected with the inclination detection module, the PA5/ADC5/SPI0_SCK pin and the PA11/USBDM pin of the MCU are both connected with the charging detection module, the PA15 pin of the MCU is connected with the cathode of the first diode, the anode of the first diode is connected with the second power supply end, the PA4/ADC4/DAC/SPI0_NSS pin and the PC11 pin of the MCU are both connected with the regulation module, the PB 6/TX pin and the PB 7/UAT0_RX pin of the MCU are both connected with the communication circuit, and the BOOT0 pin of the MCU is grounded through a fourteenth resistor.

Optionally, in the state monitoring circuit, the tilt detection module includes a tilt detection chip, a sixth capacitor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, and an eighteenth resistor;

the RESV pin of the inclination detection chip is connected with one end of the fifteenth resistor, one end of the sixteenth resistor and the second power supply end; the VDDIO pin, the VDD pin and the NCS pin of the inclination detection chip are all connected with the second power supply end; the AD0/SD0 pin, the FSYNC pin, the RESV pin and the GND pin of the inclination detection chip are all grounded; the REGOUT pin of the inclination detection chip is grounded through a sixth capacitor, the SCL/SCLK pin of the inclination detection chip is connected with one end of a seventeenth resistor, the other end of the seventeenth resistor is connected with the other end of the sixteenth resistor and the PA9/I2C0_SCL pin of the MCU, the SDA/SDI pin of the inclination detection chip is connected with one end of the eighteenth resistor, and the other end of the eighteenth resistor is connected with the other end of the fifteenth resistor and the PA10/I2C0_SDA pin of the MCU.

Optionally, in the state monitoring circuit, the adjusting module includes a power supply chip, an output interface, an inductor, a seventh capacitor, an eighth capacitor, a nineteenth resistor, a twentieth resistor, a twenty first resistor, a twenty second resistor, and a twenty third resistor;

the VIN pin of the power chip is connected with one end of the nineteenth resistor and the third power supply end, the EN pin of the power chip is connected with the other end of the nineteenth resistor and the PC11 pin of the MCU, the GND pin of the power chip is grounded, the BST pin of the power chip is connected with one end of the seventh capacitor through the twentieth resistor, the SW pin of the power chip is connected with the other end of the seventh capacitor and one end of the inductor, and the FB pin of the power chip is connected with one end of the twenty first resistor; the other end of the twenty-first resistor is connected with one end of the twenty-second resistor, one end of the twenty-third resistor and the PA4/ADC4/DAC/SPI0_NSS pin of the MCU; the other end of the twenty-second resistor is grounded; the other end of the inductor is connected with the other end of the twenty-third resistor, one end of the eighth capacitor and the 2 nd pin of the output interface; the other end of the eighth capacitor and the 1 st pin of the output interface are grounded.

Optionally, in the state monitoring circuit, the charge detection module includes a charge chip, a charge interface, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a twenty-sixth resistor, a twenty-seventh resistor, a twenty-eighth resistor, a twenty-ninth resistor, and a thirty-seventh resistor;

the VCC pin of the charging chip is connected with a fourth power supply end, one end of a twenty-sixth resistor and one end of a tenth capacitor; the other end of the tenth capacitor is grounded, and the CE pin of the charging chip is connected with the other end of the twenty-sixth resistor and the PA11/USBDM pin of the MCU; the PAD pin, the TEMP pin and the GND pin of the charging chip are all grounded; the BAT pin of the charging chip is a battery power supply end, one end of which is connected with the eleventh capacitor and the 2 nd pin of the charging interface; the other end of the eleventh capacitor and the 1 st pin of the charging interface are grounded, the PROG pin of the charging chip is grounded through a twenty-seventh resistor, one end of the twenty-eighth resistor is connected with the BAT pin of the charging chip, the other end of the twenty-eighth resistor is connected with one end of the twenty-ninth resistor and one end of the thirty-ninth resistor, the other end of the twenty-ninth resistor is connected with one end of the twelfth capacitor and the PA5/ADC5/SPI0_SCK pin of the MCU, and the other end of the thirty-third resistor and the other end of the twelfth capacitor are grounded.

The intelligent street lamp comprises a monitoring box, wherein a circuit board is arranged in the monitoring box, a communication circuit is arranged on the circuit board, and the state monitoring circuit is also arranged on the circuit board; the state monitoring circuit is connected with the communication circuit, and the communication circuit is in communication connection with the server;

the state monitoring circuit detects the power supply state of the mains supply and the inclined state of the lamp post and transmits the power supply state and the inclined state of the lamp post to the server through the communication circuit.

In the technical scheme provided by the embodiment of the utility model, the state monitoring circuit comprises a metering module, a main control module and an inclination detection module; the main control module is connected with the metering module and the inclination detection module; the metering module is used for detecting the voltage, the current and the electric leakage of the mains supply and outputting corresponding detection signals to the main control module; the inclination detection module is used for detecting the inclination state of the lamp post and outputting a corresponding inclination signal to the main control module; the main control module obtains a voltage value, a current value and a leakage value of the mains supply according to the detection signal; detecting the inclined state of the lamp post according to the inclined signal; the voltage value, the current value, the leakage value and the inclination state are also uploaded to the server through the communication circuit. The detection of the voltage value, the current value, the leakage value and the inclined state of the lamp post of the commercial power is realized, and the problem that the power supply state and the inclined state of the lamp post cannot be detected by the existing street lamp is solved.

Drawings

Fig. 1 is a block diagram of a status monitor circuit according to an embodiment of the present utility model.

FIG. 2 is a schematic circuit diagram of a portion of a metering module according to an embodiment of the present utility model.

Fig. 3 is a schematic circuit diagram of another part of the metering module according to an embodiment of the present utility model.

Fig. 4 is a schematic circuit diagram of a main control module according to an embodiment of the utility model.

Fig. 5 is a schematic circuit diagram of a tilt detection module according to an embodiment of the utility model.

Fig. 6 is a schematic circuit diagram of a conditioning module according to an embodiment of the utility model.

Fig. 7 is a schematic circuit diagram of a charge detection module according to an embodiment of the utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. Embodiments of the present utility model are intended to be within the scope of the present utility model as defined by the appended claims.

Referring to fig. 1, the intelligent street lamp provided by the embodiment of the utility model comprises a monitoring box, wherein a circuit board is arranged in the monitoring box, and a state monitoring circuit 10 and a communication circuit 20 are arranged on the circuit board. The state monitoring circuit 10 is connected to a communication circuit 20, and the communication circuit 20 is connected to a server in communication. The monitor box may be disposed at the bottom of the lamp post or at other locations of the lamp post, which is not limited herein. The state monitoring circuit 10 detects the power supply state of the mains supply and the inclined state of the lamp post, and transmits the detected power supply state and the inclined state of the lamp post to the server through the communication circuit.

In this embodiment, the state monitoring circuit includes a metering module 11, a main control module 12 and an inclination detection module 13; the main control module 12 is connected with the metering module 11 and the inclination detection module 13; the metering module 11 detects the voltage, current and electric leakage of the mains supply and outputs corresponding detection signals to the main control module 12; the inclination detection module 13 is used for detecting the inclination state of the lamp post and outputting a corresponding inclination signal to the main control module 12; the main control module 12 processes the detection signal to obtain a voltage value, a current value and a leakage value of the mains supply; judging whether the lamp post is inclined or not according to the inclination signal. The main control module 12 uploads the voltage value, the current value, the leakage value and the inclination judgment result to the server through the communication circuit 20 for display. Therefore, the detection of the power supply state (the voltage value, the current value and the leakage value of the commercial power) and the inclined state of the lamp post can be realized, whether various values of the commercial power and the lamp post are inclined or not can be known, and the fault of the street lamp (namely, the inclined state of the lamp post) can be reported in time.

Preferably, the state monitoring circuit further includes an adjusting module 14, which is connected to the main control module 12 and a power supply end of the street lamp, and is configured to control the street lamp to be turned on or off according to the switch signal output by the main control module 12, and adjust the brightness of the street lamp according to the dimming signal. The dimming signal is a dimming signal output by the main control module 12, and the dimming signal is received by the communication circuit 20 and then transmitted to the main control module 12.

Preferably, the state monitoring circuit further comprises a charging detection module 15, and a corresponding battery is configured in the street lamp to supply power to each module in the box body. The charging detection module 15 is connected to the main control module 12 and the battery, and controls the charging state of the battery according to the charging enabling signal output by the main control module, and also performs partial pressure sampling on the battery voltage and transmits the partial pressure sampling to the main control module 12, and the main board module can detect the battery voltage according to the size of the partial pressure voltage.

Preferably, a boost module is also provided in connection with the battery to boost the battery voltage to a desired operating voltage to power the other modules. The boosting module can be composed of a boosting chip with the model of MP3213 and a peripheral circuit thereof.

It should be understood that the communication circuit 20 is a prior art, and may be a 4G communication module (for example, a communication chip with a model number of EC600N-cn_r1_1 and a peripheral circuit thereof), a WIFI module, etc., so long as the obtained working state (including a voltage value, a current value and a leakage value of the mains supply) and the lamp post state (whether the lamp post state is inclined) of the street lamp can be uploaded to the server, and data communication with the server can be performed. There are also some existing modules on the circuit board, such as a power module for providing each power supply terminal, a mains interface, etc., which are not described in detail herein.

In a specific implementation, the state monitoring circuit may further be provided with a temperature and humidity module (such as a temperature and humidity detecting chip with a model of GXHT3L and a peripheral circuit thereof) to monitor humidity and temperature in a working environment of the street lamp, and a fan is arranged at a place where heat is required. The main control module 12 obtains the current temperature value and humidity value according to the temperature and humidity signal output by the temperature and humidity module, and can control the fan to rotate to dissipate heat when the temperature value is judged to be greater than the upper temperature limit.

In the specific implementation, the state monitoring circuit can be further provided with a switching value input module and a corresponding sensor to detect whether water intrusion exists, whether smoke exists, the opening and closing state of the box door and the like. For example, an external door magnet detection switch receives an opening and closing signal, and the opening and closing signal is transmitted to an MCU in the main control module 12 through an optical coupler isolator; receiving a smoke signal through an external smoke sensor, and transmitting the smoke signal to the MCU through an optical coupler isolator; the water invasion signal is received by an external water invasion detection sensor, and is transmitted to the MCU by an NPN triode. The switching value input module is the prior art, and lamp pole vibration detection and the like can be further added according to requirements.

Referring to fig. 2 and 3 together, the metering module 11 includes a metering chip U1, a first interface J1, a first optocoupler U2, a second optocoupler U3, a resistor string R0, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5; the VDD pin of the metering chip U1 is connected to a first power supply end (input first voltage AC3V 3), the IP1 pin of the metering chip U1 is connected to one end of the first resistor R1 and one end of the first capacitor C1, the other end of the first capacitor C1 is connected to zero line ground 220v_n_gnd, the other end of the first resistor R1 is connected to zero line end (input zero line voltage 220v_n), the IN1 pin of the metering chip U1 is connected to one end of the second resistor R2 and one end of the second capacitor C2, the other end of the second capacitor C2 is connected to zero line ground, the IP2 pin of the metering chip U1 is connected to one end of the third resistor R3 and one end of the third capacitor C3, the other end of the third capacitor C3 is connected to zero line ground, the other end of the third resistor R3 is connected to one end of the sixth resistor R6 and the second pin of the first interface J1, the IN2 pin of the metering chip U1 is connected to one end of the fourth resistor R4 and one end of the fourth capacitor C4, the other end of the fourth capacitor C4 is connected to zero line ground, and the other end of the fourth resistor R4 is connected to the first interface J1 of the fourth resistor R6; the VP pin of the metering chip U1 is connected with one end of a fifth resistor R5, one end of a fifth capacitor C5 and one end of a resistor string R0; the other end of the fifth capacitor C5 and the other end of the fifth resistor R5 are both connected with zero line ground, the other end of the resistor string R0 is connected with a live wire end (input live wire voltage 220V_L), and the GND pin of the metering chip U1 and the SEL pin of the metering chip U1 are both connected with zero line ground 220V_N_GND; the TX/SDO pin of the metering chip U1 is connected with the 2 nd pin of the first optical coupler U2, the RX/SDI pin of the metering chip U1 is connected with the 4 th pin of the second optical coupler U3, the 1 st pin of the first optical coupler U2 is connected with the first power supply end, the 4 th pin of the first optical coupler U2 and the 2 nd pin of the second optical coupler U3 are both connected with the main control module 12, the 3 rd pin of the first optical coupler U2 is Grounded (GND), the 1 st pin of the second optical coupler U3 is connected with the second power supply end, and the 3 rd pin of the second optical coupler U3 is connected with zero line ground.

The model of the metering chip U1 is preferably BL0939, the first resistor R1 to the fifth resistor R5 are current limiting resistors of the signal input end, and the first capacitor C1 to the fifth capacitor C5 are signal filtering capacitors. The resistor string R0 (which is formed by connecting 5 resistors of 390kΩ in series, and the number and resistance can be changed according to the requirement in the embodiment) is used for dividing the voltage 220v_l of the 220V live wire to about 110mV, so that the VP pin of the metering chip U1 can conveniently detect the voltage of the commercial power (i.e. the alternating current on the zero and live wire ends). The IN1 pin and the IP1 pin of the metering chip U1 are used for detecting the current of the mains supply. The first interface J1 is externally connected with a zero sequence transformer (also called a zero sequence current transformer), the zero sequence transformer transmits detected leakage signals of the mains supply to an IN2 pin and an IP2 pin of the metering chip U1 through the first interface J1, and the metering chip U1 can detect the leakage value of the mains supply. The serial port signal UART_0939_TX output by the metering chip U1 is internally loaded with the voltage, current and leakage value of the mains supply, and the serial port signal UART_0939_TX is isolated by the first optocoupler U2 and then outputs the detection signal 0939_UART3_RX to the main control module 12 for calculation, so that a specific voltage value, current value and leakage value can be obtained.

Preferably, the metering module 11 further comprises a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11 and a twelfth resistor R12; the seventh resistor R7 is connected between the 4 th pin of the first optocoupler U2 and the second power supply end (inputting the second voltage 3.3 VD), the eighth resistor R8 is connected between the 4 th pin of the second optocoupler U3 and the first power supply end, the ninth resistor R9 is connected between the 1 st pin of the first optocoupler U2 and the first power supply end, the tenth resistor R10 is connected between the 1 st pin of the second optocoupler U3 and the second power supply end, the eleventh resistor R11 is connected between the 2 nd pin of the second optocoupler U3 and the second power supply end, and the twelfth resistor R12 is connected between the 3 rd pin of the second optocoupler U3 and zero line ground.

The seventh resistor R7 (with a resistance value of preferably 4.7kΩ) and the eighth resistor R8 (with a resistance value of preferably 10kΩ) are pull-up resistors, and pull-up the received signal to a high level when the phototransistor corresponding to the optocoupler is turned off, so as to avoid occurrence of an error signal when the optocoupler is not turned on. The ninth resistor R9 (the resistance value is preferably 1kΩ), the tenth resistor R10 (the resistance value is preferably 1kΩ), and the eleventh resistor R11 (the resistance value is preferably 10kΩ) are current limiting protection resistors, so as to avoid burning out the light emitting diode in the optocoupler due to abrupt voltage change, and the twelfth resistor R12 (the resistance value is preferably 1kΩ) is a pull-down resistor.

Referring to fig. 4, the main control module 12 includes an MCU U3, a first diode D1, a thirteenth resistor R13, and a fourteenth resistor R14; the VBAT pin, the VREF pin and the VDD pin of the MCU U3 are all connected with a second power supply end; the PA0/UART3_TX/ADC0 pin of the MCU U3 is connected with the 2 nd pin of the second optocoupler U3, the PA1/UART3_RX/ADC1 pin of the MCU U3 is connected with the 4 th pin of the first optocoupler U2, the BOOT1_PB2 pin of the MCU U3 is grounded through a thirteenth resistor R13, the PA9/I2C0_SCL pin and the PA10/I2C0_SDA pin of the MCU U3 are both connected with the inclination detection module 13, the PA5/ADC5/SPI0_SCK pin and the PA11/USBDM pin of the MCU U3 are both connected with the charging detection module 15, the PA15 pin of the MCU U3 is connected with the cathode of a first diode D1, the anode of the first diode D1 is connected with the second power supply end, the PA4/ADC4/DAC/SPI0_NSS pin and the PC11 pin of the MCU U3 are both connected with the regulation module 14, the PB 6/TX pin and the PB 7/0_RX pin of the MCU U3 are both connected with the communication module 20, and the UART 0_OT pin of the MCU U3 is connected with the ground through the fourteenth resistor R14.

The model of the MCU is preferably GD32L233C8T6. The MCU calculates a detection signal 0939_UART3_RX output by the metering module 11, and a specific voltage value, a specific current value and a specific leakage value can be obtained; the MCU can also send 0939_UART3_TX signals (such as loading a reading instruction), and the signals are isolated by the second optocoupler U3 and then transmitted to the metering chip U1, and serial communication is carried out with the metering chip U1. The MCU outputs an enable signal V0_10V_OFF/ON to control the power supply state of the control regulation module 14 to the street lamp, and also outputs a corresponding dimming signal CON_V0_10V_DAC to control the voltage value of the power supply voltage output by the regulation module 14. The inclination signals (ZD/WSD_SCL and ZD/WSD_SDA) output by the inclination detection module 13 are transmitted to the MCU, and the signals in the I2C format are converted into inclination values, so that the inclination of the lamp post can be obtained. The MCU outputs a charge enable signal bat_en to control whether the charge detection module 15 charges the battery, and also detects the voltage value of the current battery voltage through the divided voltage V-ADC-BAT fed back by the charge detection module 15. The MCU and the communication circuit communicate through the 4G_UART1_RX signal and the 4G_UART1_TX signal, so that uploading of various data and receiving of various control instructions are realized.

It should be understood that other pin signals of the MCU are in the prior art, only pin signals related to the present embodiment are shown here, and other pins may be used according to requirements. For example, the door opening and closing signal may be transmitted to the PC6 pin of the MCU, the water intrusion signal may be transmitted to the PC7 pin of the MCU, and the smoke signal may be transmitted to the PB11/LPUART_RX pin of the MCU.

Referring to fig. 5, the tilt detection module 13 includes a tilt detection chip U4, a sixth capacitor C6, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, and an eighteenth resistor R18; the RESV pin of the inclination detection chip U4 is connected with one end of a fifteenth resistor R15, one end of a sixteenth resistor R16 and a second power supply end; the VDDIO pin, the VDD pin and the NCS pin of the inclination detection chip U4 are all connected with the second power supply end; the AD0/SD0 pin, the FSYNC pin, the RESV pin and the GND pin of the inclination detection chip U4 are all grounded; the REGOUT pin of the inclination detection chip U4 is grounded through a sixth capacitor C6, the SCL/SCLK pin of the inclination detection chip U4 is connected with one end of a seventeenth resistor R17, the other end of the seventeenth resistor R17 is connected with the other end of a sixteenth resistor R16 and the PA9/I2C0_SCL pin of the MCU U3, the SDA/SDI pin of the inclination detection chip U4 is connected with one end of an eighteenth resistor R18, and the other end of the eighteenth resistor R18 is connected with the other end of a fifteenth resistor R15 and the PA10/I2C0_SDA pin of the MCU U3.

The model of the inclination detection chip U4 is preferably MPU6500, which can detect the inclination state of the lamp pole in real time, and read the inclination signals (ZD/wsd_scl and ZD/wsd_sda) in the I2C format at intervals of a preset time (e.g., 2 s) and transmit the inclination signals to the MCU for conversion processing (e.g., converting the signals in the I2C format into inclination values, such as angle values), so as to obtain the inclination of the lamp pole. The MCU can judge whether the lamp post is inclined according to the inclination, and consider the error condition, for example, set up an inclination scope (0 degree to 15 degrees, concrete numerical value can be modified according to the demand), if the inclination is outside the inclination scope (be greater than 15 degrees), judge that the lamp post is inclined.

Referring to fig. 6, the adjusting module 14 includes a power chip U5, an output interface J2, an inductor L1, a seventh capacitor C7, an eighth capacitor C8, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, and a twenty-third resistor R23; the VIN pin of the power chip U5 is connected with one end of a nineteenth resistor R19 and a third power supply end (inputting a third voltage 12 VD), the EN pin of the power chip U5 is connected with the other end of the nineteenth resistor R19 and the PC11 pin of the MCU U3, the GND pin of the power chip U5 is grounded, the BST pin of the power chip U5 is connected with one end of a seventh capacitor C7 through a twentieth resistor R20, the SW pin of the power chip U5 is connected with the other end of the seventh capacitor C7 and one end of an inductor L1, and the FB pin of the power chip U5 is connected with one end of a twenty-first resistor R21; the other end of the twenty-first resistor R21 is connected with one end of the twenty-second resistor R22, one end of the twenty-third resistor R23 and the PA4/ADC4/DAC/SPI0_NSS pin of the MCU U3; the other end of the twenty-second resistor R22 is grounded; the other end of the inductor L1 is connected with the other end of the twenty-third resistor R23, one end of the eighth capacitor C8 and the 2 nd pin of the output interface J2; the other end of the eighth capacitor C8 and the 1 st pin of the output interface J2 are grounded.

The power chip U5 is preferably a DC-DC power chip with the model of MP1652, and the output interface J2 is connected with the power supply end of the street lamp. The MCU outputs a corresponding enabling signal V0_10V_OFF/ON to control the power supply state of the street lamp according to a switching instruction (the switching instruction can be generated by a switching key ON the street lamp or a switching signal issued by a server is received by the communication circuit 20 and then transmitted to the MCU), the power supply chip U5 works when the enabling signal V0_10V_OFF/ON is in a high level, the generated power supply voltage 0-10V is output to the street lamp through the output interface J2 to supply power to the street lamp, and the street lamp is lightened; when the enabling signal V0_10V_OFF/ON is at a low level, the power chip U5 does not work, no power supply voltage is output at the moment, and the street lamp is extinguished. The eighth capacitor C8 (preferably 22 uF) is used to filter the output power supply voltage of 0-10V, so as to stabilize the voltage of the street lamp.

The server transmits the brightness adjusting signal to the MCU after receiving the brightness adjusting signal by the communication circuit 20, and the MCU outputs the corresponding dimming signal CON_V0_10V_DAC to change the current on the feedback line of the power chip U5, so that the voltage value of the output power supply voltage can be adjusted, and the voltage value is in the range of 0-10V. The daytime enabling signal V0_10V_OFF/ON is low level, and the street lamp is turned off by outputting 0V; when the lamp light can be in dark spot during dusk, the enabling signal V0_10V_OFF/ON is in high level, and the dimming signal CON_V0_10V_DAC controls the power supply voltage to be 5V; the night light brightness is brightest, the enable signal v0_10v_off/ON is at high level and the dimming signal con_v0_10v_dac controls the supply voltage to be 10V.

Preferably, the regulation module 14 further comprises a ninth capacitor C9, a twenty-fourth resistor R24 and a twenty-fifth resistor R25; the ninth capacitor C9 is connected between the VIN pin of the power chip U5 and the ground, one end of the twenty-fourth resistor R24 is connected with the EN pin of the power chip U5, the other end of the twenty-fourth resistor R24 is connected with the PC11 pin of the MCU U3, one end of the twenty-fifth resistor R25 is connected with the other end of the twenty-first resistor R21 and one end of the twenty-third resistor R23, and the other end of the twenty-fifth resistor R25 is connected with the PA4/ADC4/DAC/SPI0_NSS pin of the MCU U3.

The ninth capacitor C9 is a filter capacitor of the VIN pin of the power chip U5, and the twenty-fourth resistor R24 and the twenty-fifth resistor R25 are current limiting resistors of the signal input terminal.

Referring to fig. 7, the charge detection module 15 includes a charge chip U6, a charge interface J3, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a twenty-eighth resistor R28, a twenty-ninth resistor R29, and a thirty-eighth resistor R30; the VCC pin of the charging chip U6 is connected to a fourth power supply terminal (inputting a fourth voltage 5 VD), one end of a twenty-sixth resistor R26, and one end of a tenth capacitor C10; the other end of the tenth capacitor C10 is grounded, and the CE pin of the charging chip U6 is connected with the other end of the twenty-sixth resistor R26 and the PA11/USBDM pin of the MCU; the PAD pin, the TEMP pin and the GND pin of the charging chip U6 are all grounded; the BAT pin of the charging chip U6 is a battery power supply end, one end of which is connected with the eleventh capacitor C11 and the 2 nd pin of the charging interface J3; the other end of the eleventh capacitor C11 and the 1 st pin of the charging interface J3 are both grounded, the PROG pin of the charging chip U6 is grounded through a twenty-seventh resistor R27, one end of a twenty-eighth resistor R28 is connected with the BAT pin of the charging chip U6, the other end of the twenty-eighth resistor R28 is connected with one end of a twenty-ninth resistor R29 and one end of a thirty-ninth resistor R30, the other end of the twenty-ninth resistor R29 is connected with one end of the twelfth capacitor C12 and the PA5/ADC5/SPI0_SCK pin of the MCU, and the other end of the thirty-eighth resistor R30 and the other end of the twelfth capacitor C12 are both grounded.

The model of the charging chip U6 is preferably TP4056, and the charging interface J3 is externally connected with the anode and the cathode of the battery. When the charge enabling signal BAT_EN output by the MCU is at a high level, the charging chip U6 works, and the fourth voltage 5VD (namely a 5V power supply) charges the battery through the charging chip U6 and can also supply power to other modules at the same time; when the charge enable signal bat_en is at a low level, the charging chip U6 stops operating, and the battery outputs the battery voltage BAT to supply power to other modules. The voltage dividing circuit formed by R28, R29 and R30 detects the battery voltage BAT, and the voltage dividing voltage V_ADC_BAT is transmitted to the MCU, so that the voltage value of the current battery voltage can be detected. C10, C11 and C12 are filter capacitors. R27 is the configuration resistance of the charging chip U6.

In summary, the state monitoring circuit and the intelligent street lamp provided by the utility model can detect the power supply state (including the voltage, the current and the electric leakage of the mains supply), the power supply condition of the battery, the inclined state of the lamp post, water intrusion, temperature and humidity, illegal opening of the box door and the like of the street lamp in real time based on the 4G wireless gateway (which can be updated to 5G later) of the intelligent street lamp; the 4G communication is adopted to report the detected signals to a unified management server, so that faults can be timely cleared, the operation and maintenance speed is improved, and the operation and maintenance cost is saved; the staff can analyze whether the street lamp meets the problem of illegal electricity taking according to the electric leakage condition, and electricity cost is saved. The intelligent street lamp supports battery power supply, and can still detect a lamp post in a period of time without mains supply.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The state monitoring circuit is connected with the communication circuit and is characterized by comprising a metering module, a main control module and an inclination detection module; the main control module is connected with the metering module and the inclination detection module;

the main control module obtains a voltage value, a current value and a leakage value of the mains supply according to the detection signal; detecting the inclined state of the lamp post according to the inclined signal; the voltage value, the current value, the leakage value and the inclination state are uploaded to a server through a communication circuit;

the metering module comprises a metering chip, a first interface, a first optocoupler, a second optocoupler, a resistor string, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a fifth capacitor;

the VDD pin of the metering chip is connected with a first power supply end, the IP1 pin of the metering chip is connected with one end of a first resistor and one end of a first capacitor, the other end of the first capacitor is connected with zero line ground, the other end of the first resistor is connected with a zero line end, the IN1 pin of the metering chip is connected with one end of a second resistor and one end of the second capacitor, the other end of the second capacitor is connected with zero line ground, the IP2 pin of the metering chip is connected with one end of a third resistor and one end of the third capacitor, the other end of the third resistor is connected with zero line ground, the other end of the third resistor is connected with one end of a sixth resistor and the 2 pin of a first interface, the IN2 pin of the metering chip is connected with one end of a fourth resistor and one end of the fourth capacitor, the other end of the fourth resistor is connected with zero line ground, and the other end of the fourth resistor is connected with the other end of the sixth resistor and the 1 pin of the first interface; the VP pin of the metering chip is connected with one end of the fifth resistor, one end of the fifth capacitor and one end of the resistor string; the other end of the fifth capacitor and the other end of the fifth resistor are both connected with zero line ground, the other end of the resistor string is connected with a live wire end, and the GND pin of the metering chip and the SEL pin of the metering chip are both connected with zero line ground; the TX/SDO pin of the metering chip is connected with the 2 nd pin of the first optical coupler, the RX/SDI pin of the metering chip is connected with the 4 th pin of the second optical coupler, the 1 st pin of the first optical coupler is connected with the first power supply end, the 4 th pin of the first optical coupler and the 2 nd pin of the second optical coupler are both connected with the main control module, the 3 rd pin of the first optical coupler is grounded, the 1 st pin of the second optical coupler is connected with the second power supply end, and the 3 rd pin of the second optical coupler is connected with zero line ground;

the inclination detection module comprises an inclination detection chip, a sixth capacitor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor and an eighteenth resistor;

the RESV pin of the inclination detection chip is connected with one end of the fifteenth resistor, one end of the sixteenth resistor and the second power supply end; the VDDIO pin, the VDD pin and the NCS pin of the inclination detection chip are all connected with the second power supply end; the AD0/SD0 pin, the FSYNC pin, the RESV pin and the GND pin of the inclination detection chip are all grounded; the REGOUT pin of the inclination detection chip is grounded through a sixth capacitor, the SCL/SCLK pin of the inclination detection chip is connected with one end of a seventeenth resistor, the other end of the seventeenth resistor is connected with the other end of the sixteenth resistor and the PA9/I2C0_SCL pin of the MCU of the main control module, the SDA/SDI pin of the inclination detection chip is connected with one end of an eighteenth resistor, and the other end of the eighteenth resistor is connected with the other end of the fifteenth resistor and the PA10/I2C0_SDA pin of the MCU of the main control module.

2. The status monitoring circuit of claim 1 further comprising an adjustment module, the adjustment module connecting the main control module and a power supply end of the street lamp;

3. The state monitoring circuit of claim 1, further comprising a charge detection module, the charge detection module connecting the master control module and the battery;

4. The condition monitoring circuit of claim 2, wherein the metering module further comprises a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, and a twelfth resistor;

5. The state monitoring circuit of claim 2, wherein the master control module comprises an MCU, a first diode, a thirteenth resistor, and a fourteenth resistor;

6. The condition monitoring circuit of claim 5, wherein the conditioning module includes a power chip, an output interface, an inductance, a seventh capacitance, an eighth capacitance, a nineteenth resistance, a twentieth resistance, a twenty-first resistance, a twenty-second resistance, and a twenty-third resistance;

7. The state monitoring circuit of claim 5, wherein the charge detection module comprises a charge chip, a charge interface, a tenth capacitance, an eleventh capacitance, a twelfth capacitance, a twenty-sixth resistance, a twenty-seventh resistance, a twenty-eighth resistance, a twenty-ninth resistance, and a thirty-seventh resistance;

8. An intelligent street lamp comprising a monitoring box, wherein a circuit board is arranged in the monitoring box, and a communication circuit is arranged on the circuit board, and the intelligent street lamp is characterized in that a state monitoring circuit as claimed in any one of claims 1-7 is also arranged on the circuit board; the state monitoring circuit is connected with the communication circuit, and the communication circuit is in communication connection with the server;