CN217643808U - Intelligent illumination monitoring circuit based on multimode communication - Google Patents

Abstract

The utility model discloses an intelligent illumination monitoring circuit based on multimode communication relates to lighting control circuit technical field, and the purpose is to realize the intelligent comprehensive monitoring to road lighting facilities, including host system, alternating voltage detection module, load current detection module, leakage current detection module, temperature sensor, inclination angle sensor, illuminance sensor, power line carrier & RF wireless communication modem module, clock module, alternating current zero crossing detection module, relay switch lamp drive module, module of adjusting luminance, alternating current-direct current conversion module; the system comprises an inclination angle sensor, an illumination sensor, a power carrier and RF wireless communication modulation and demodulation module, a clock module, an alternating voltage detection module, a load current detection module, a leakage current detection module, an alternating zero-crossing detection module, a temperature sensor, a relay switch lamp driving module and a dimming module, wherein the inclination angle sensor, the illumination sensor, the power carrier and RF wireless communication modulation and demodulation module, the clock module, the alternating voltage detection module, the load current detection module, the leakage current detection module, the alternating zero-crossing detection module, the temperature sensor, the relay switch lamp driving module and the dimming module are respectively connected to a main control module; the utility model has the advantages of to the comprehensive real time monitoring of lighting system.

Description

Intelligent illumination monitoring circuit based on multimode communication

Technical Field

The utility model relates to an illumination control circuit technical field, more specifically relate to an intelligence illumination monitoring circuit technical field based on multimode communication.

Background

Road lighting is an important public facility in a city, and intelligent operation and maintenance, accurate management and control and energy-saving management of street lamps are increasingly emphasized by competent departments.

In the existing traditional street lamp and the control system thereof, a time controller or three remote devices are adopted to directly carry out on-off control on a distribution box loop in a rough management mode; accurate solutions cannot be provided during operation and maintenance of the street lamps, fine energy-saving management and control can not be performed on a single street lamp, most operations need to be performed on site, and labor, material resources and time cost are greatly increased.

Therefore, in order to solve the above problems, it is now urgently needed to develop an intelligent illumination monitoring terminal system, which is used to monitor the whole or a single street lamp device, and implement an efficient and stable control manner, can monitor any one of the street parameters in real time, can automatically operate under the condition of no control or off-network, and can perform timing on/off, loop leakage processing, dimming, lamp post inclination, lamp holder temperature, specific street lamp control, and real-time reporting of related data, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the intelligent comprehensive monitoring of the road lighting facilities is realized. In order to solve the technical problem, the utility model provides an intelligence illumination monitoring circuit based on multimode communication.

The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:

an intelligent lighting monitoring circuit based on multimode communication comprises a main control module, an alternating voltage detection module, a load current detection module, a leakage current detection module, a temperature sensor, an inclination angle sensor, an illuminance sensor, a power carrier and RF wireless communication modulation and demodulation module, a clock module, an alternating current zero-crossing detection module, a relay switch lamp driving module, a dimming module and an alternating current-direct current conversion module;

the output end of the inclination angle sensor, the output end of the illumination sensor, the power carrier and RF wireless communication modulation and demodulation module, the clock module, the output end of the alternating voltage detection module, the output end of the load current detection module, the output end of the leakage current detection module, the output end of the alternating current zero-crossing detection module, the output end of the temperature sensor, the input end of the relay switch lamp driving module and the input end of the dimming module are respectively connected to the main control module;

the detection ends of the alternating voltage detection module, the load current detection module and the alternating zero-crossing detection module are connected to an external alternating current power supply; an external alternating current power supply is connected to an external lighting system through the output end of the relay switch lamp driving module; the output end of the dimming module is connected to an external lighting system; the temperature sensor, the inclination angle sensor and the illumination sensor are respectively arranged at the external lighting system; the output end of the relay switch lamp driving module is connected to the power input end of an external lighting system;

and the power supply end of the main control module is connected to an external alternating current power supply through the alternating current-direct current conversion module.

Preferably, the dimming module includes a DA conversion output circuit and a digital amplification circuit connected in sequence.

Preferably, the load current detection module comprises a first current transformer, a plurality of resistors, a plurality of capacitors, a plurality of magnetic beads and a first operational amplifier; the center of a magnetic core of the first current transformer penetrates through a live wire of the external alternating current power supply;

the first current transformer and the first resistor are connected in parallel, one end of the first resistor is connected to one end of the first capacitor, one end of the third capacitor and one end of the first magnetic bead, and the other end of the first capacitor is grounded; the other end of the first resistor is connected to one end of the second capacitor, one end of the second resistor and one end of the second magnetic bead, and the other end of the second capacitor is grounded; the other end of the second resistor is connected with the other end of the third capacitor;

the other end of the first magnetic bead is connected to one end of a third resistor, the other end of the third resistor is connected to one end of a fourth capacitor, one end of a fourth resistor and the reverse input end of the first operational amplifier, and the other end of the second magnetic bead is connected to the non-inverting input end of the first operational amplifier;

the output end of the first operational amplifier, the other end of the fourth capacitor and the other end of the fourth resistor are connected to one end of a fifth resistor, the other end of the fifth resistor is grounded through the fifth capacitor, and the other end of the fifth resistor is further connected to the main control module.

Preferably, the alternating voltage detection module comprises a voltage transformer, a plurality of resistors, a plurality of capacitors, a plurality of magnetic beads and a second operational amplifier;

one end of the sixth resistor is connected with the AC-L of the external alternating current power supply, the other end of the sixth resistor is connected with the second end of the primary side of the voltage transformer, and the first end of the primary side of the voltage transformer is connected with the AC-N of the external alternating current power supply;

one end of the seventh resistor is connected with the first end of the secondary side of the voltage transformer, one end of the sixth capacitor, one end of the eighth resistor and one end of the third magnetic bead; the other end of the seventh resistor is connected with the second end of the secondary side of the voltage transformer, one end of the seventh capacitor, one end of the eighth capacitor and one end of the fourth magnetic bead; the other end of the eighth capacitor is connected with the other end of the eighth resistor;

the other end of the third magnetic bead is connected to the non-inverting input end of the second operational amplifier, the other end of the fourth magnetic bead is connected to one end of a ninth resistor, and the other end of the ninth resistor is connected to the inverting input end of the second operational amplifier, one end of a tenth resistor and one end of a ninth capacitor; the output end of the second operational amplifier, the other end of the tenth resistor and the other end of the ninth capacitor are connected to one end of an eleventh resistor, the other end of the eleventh resistor is grounded through the tenth capacitor, and the other end of the eleventh resistor is also connected to the main control module;

the positive power supply end of the second operational amplifier is connected with a direct current source, and the negative power supply end of the second operational amplifier is grounded.

Preferably, the alternating current zero-crossing detection module comprises a plurality of resistors, a first diode, a first optocoupler, a plurality of capacitors C12 and a first NPN triode;

the twelfth resistor is connected with the AC-L of the external alternating current power supply, the twelfth resistor is sequentially connected with the thirteenth resistor and the fourteenth resistor in series, and the fourteenth resistor is connected to the first end of the first optocoupler;

the cathode of the first diode is connected to the AC-N end of the external alternating current power supply, and the anode of the first diode is connected to the second end of the first optical coupler;

the third end of the first optocoupler is connected to one end of an eleventh capacitor, one end of a fifteenth resistor and one end of a sixteenth resistor, and the other end of the eleventh capacitor and the other end of the fifteenth resistor are grounded; the fourth end of the first optocoupler is connected with one end of a seventeenth resistor and a direct current source;

and the base electrode of the first NPN triode is connected to the other end of the sixteenth resistor, the collector electrode of the first NPN triode is connected to the other end of the seventeenth resistor, the emitter electrode of the first NPN triode is grounded, and the other end of the seventeenth resistor is also connected with the main control module.

Preferably, the relay switch lamp driving module comprises a plurality of resistors, a second diode, a first relay and a second NPN triode; the first relay comprises a relay coil and two normally open contacts;

one end of the eighteenth resistor is connected with the main control module, the other end of the eighteenth resistor is connected to one end of the nineteenth resistor and the base electrode of the second NPN triode, the other end of the nineteenth resistor and the emitting electrode of the second NPN triode are grounded, the collecting electrode of the second NPN triode is connected to one end of the relay coil and the anode of the second diode, the other end of the relay coil is connected to the cathode of the second diode and the direct current source, and the two normally-open contacts are respectively connected with the live wire and the zero line of the external lighting system.

The utility model discloses following beneficial effect has:

the utility model can detect the lighting system in many aspects through a plurality of sensors, and realize comprehensive and real-time intelligent monitoring; the brightness of the street lamp is controlled by the dimming module and the illumination detection module, so that the real-time state of the street lamp is accurately controlled, the illumination requirement is met, and the electric energy is saved; the utility model discloses can also realize in time that data report and order are issued through power line carrier & RF wireless communication modem module, realize the data analysis of long-range control; in sum, the utility model discloses a lighting system's intelligence fortune dimension, malfunction alerting and accurate adjusting luminance.

Drawings

FIG. 1 is a schematic diagram of the principle result of the present invention;

fig. 2 is a schematic circuit connection diagram of a load current detection module of embodiment 2;

FIG. 3 is a schematic circuit diagram of an AC voltage detecting module according to embodiment 3;

FIG. 4 is a schematic circuit diagram of an AC zero-cross detection module according to embodiment 4;

fig. 5 is a schematic circuit connection diagram of a relay switch lamp driving module of embodiment 5;

reference numerals are as follows: r1-first resistor, R2-second resistor, R3-third resistor, R4-fourth resistor, R5-fifth resistor, R6-sixth resistor, R7-seventh resistor, R8-eighth resistor, R9-ninth resistor, R10-tenth resistor, R11-eleventh resistor, R12-twelfth resistor, R13-thirteenth resistor, R14-fourteenth resistor, R15-fifteenth resistor, R16-sixteenth resistor, R17-seventeenth resistor, R18-eighteenth resistor, R19-nineteenth resistor, C1-first capacitor, C2-second capacitor, C3-third capacitor, C4-fourth capacitor, C5-fifth capacitor, C6-sixth capacitor, C7-seventh capacitor, C8-eighth capacitor, C9-ninth capacitor, C10-tenth capacitor, C11-eleventh capacitor, C12-twelfth capacitor, C13-thirteenth capacitor, C14-fourteenth capacitor, C15-fifteenth capacitor, D1-first diode, D2-second diode, A1-first operational amplifier, A2-second operational amplifier, K1-first relay, Q1-first NPN triode, Q2-second NPN triode, U1-first optical coupler, CT 1-first current transformer, PT 1-voltage transformer, FB 1-first magnetic bead, FB 2-second magnetic bead, FB 3-third magnetic bead and FB 4-fourth magnetic bead.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, this embodiment provides an intelligent lighting monitoring circuit based on multimode communication, which includes a main control module, an ac voltage detection module, a load current detection module, a leakage current detection module, a temperature sensor, an inclination angle sensor, an illuminance sensor, a power carrier and RF wireless communication modem module, a clock module, an ac zero-cross detection module, a relay switch lamp driving module, a dimming module, and an ac-dc conversion module;

the output end of the inclination angle sensor, the output end of the illumination sensor, the power carrier and RF wireless communication modulation and demodulation module, the clock module, the output end of the alternating voltage detection module, the output end of the load current detection module, the output end of the leakage current detection module, the output end of the alternating current zero-crossing detection module, the output end of the temperature sensor, the input end of the relay switch lamp driving module and the input end of the dimming module are respectively connected to the main control module;

the detection ends of the alternating voltage detection module, the load current detection module and the alternating current zero-crossing detection module are connected to an external alternating current power supply; an external alternating current power supply is connected to an external lighting system through the output end of the relay switch lamp driving module; the output end of the dimming module is connected to an external lighting system; the temperature sensor, the inclination angle sensor and the illumination sensor are respectively arranged at the external lighting system; the output end of the relay switch lamp driving module is connected to the power supply input end of an external lighting system;

and the power supply end of the main control module is connected to an external alternating current power supply through the alternating current-direct current conversion module.

As a preferable solution of this embodiment, the dimming module includes a DA conversion output circuit and a digital amplification circuit that are connected in sequence.

The utility model discloses mainly carry out global control, detection data's receipt through host system. The alternating voltage detection module performs signal high-low conversion on an externally input alternating voltage value, and converts a high voltage signal into a low voltage signal for detection of the main control module; the load current detection module detects the alternating current value of an external load, performs signal conversion and sends the alternating current value to the main control module for current detection; the leakage current detection module performs signal conversion on the residual current value on the external load loop, converts the current signal into a low-voltage signal and sends the low-voltage signal to the main control module to detect the leakage condition; the alternating current zero-crossing detection module converts externally input alternating current into high and low level square waves and sends the high and low level square waves to the main control module to perform alternating current zero-crossing detection; and the light intensity is adjusted through the light adjusting module, and the relay switch lamp driving module controls the switch of the lighting system.

The temperature sensor converts the temperature of a lamp holder of the lighting system into a direct-current voltage signal with a corresponding proportion and sends the direct-current voltage signal to the main control module so as to detect the temperature of the lamp holder in real time; the inclination angle detection unit converts the angle and acceleration change of X, Y, Z three directions of a lamp post of an external lighting system into digital signals and sends the digital signals to the main control module to detect the inclination angle and the acceleration of the lamp post in real time; the illuminance sensor converts the intensity change of the ambient light into a digital signal to realize the real-time detection of the intensity of the ambient light; the power carrier and RF wireless communication modem module is used for communicating a control command received from an upper computer with a serial port of the main control module through the serial port, and simultaneously the main control module sends related parameters and alarm data to the power carrier and RF wireless communication modem module through the serial port according to a zero crossing point, so that communication with the centralized controller and the control platform is realized, and monitoring of single-lamp data is finally realized; the clock module is communicated with the main control module through an I2C port and used for providing an accurate clock for the main control module when the terminal system is powered off and automatically correcting the time according to the latest clock data sent by the main control module.

In summary, in the embodiment, a leakage current detection module detects whether a street lamp loop leaks electricity, a load current detection module detects whether the street lamp loop is over-current or short-circuited, an alternating voltage detection module detects whether the street lamp loop is over-voltage or under-voltage, an inclination angle sensor detects whether an inclination angle of a lamp post is inclined or impacted, a main control module controls a relay to control the on-off of a power supply of the street lamp, and a power carrier and RF wireless communication modulation and demodulation module realizes functions of timely fault alarm reporting and task command receiving; the brightness of the street lamp is controlled through the dimming module and the illumination sensor, so that the real-time state of the street lamp is accurately controlled, the lighting requirement is met, and the electric energy is saved; the functions of timely fault alarming and data reporting and receiving task commands issued by a control platform are realized through a power line carrier and RF wireless communication modulation-demodulation module, and remote monitoring and big data analysis are realized; the intelligent operation and maintenance, fault alarm and accurate dimming functions of the street lamp are comprehensively realized.

In terms of model selection, the clock module may select BQ32002, the temperature sensor may select SDNT1608X473F4150, the tilt angle sensor may select LIS2DH12, and the illumination sensor may select opt3001.

Example 2

This example is based on the solution of example 1.

In this embodiment, referring to fig. 2, the load current detection module includes a first current transformer CT1, a plurality of resistors, a plurality of capacitors, a plurality of magnetic beads, and a first operational amplifier A1; the center of a magnetic core of the first current transformer CT1 passes through a live wire of the external alternating current power supply;

the first current transformer CT1 and the first resistor R1 are connected in parallel, one end of the first resistor R1 is connected to one end of the first capacitor C1, one end of the third capacitor C3 and one end of the FB1 first magnetic bead, and the other end of the first capacitor C1 is grounded; the other end of the first resistor R1 is connected to one end of the second capacitor C2, one end of the second resistor R2 and one end of the FB2 second magnetic bead, and the other end of the second capacitor C2 is grounded; the other end of the second resistor R2 is connected with the other end of the third capacitor C3;

the other end of the FB1 first magnetic bead is connected to one end of a third resistor R3, the other end of the third resistor R3 is connected to one end of a fourth capacitor C4, one end of a fourth resistor R4 and the inverting input end of a first operational amplifier A1, and the other end of the FB2 second magnetic bead is connected to the non-inverting input end of the first operational amplifier A1;

the output end of the first operational amplifier A1, the other end of the fourth capacitor C4 and the other end of the fourth resistor R4 are connected to one end of a fifth resistor R5, the other end of the fifth resistor R5 is grounded through the fifth capacitor C5, and the other end of the fifth resistor R5 is further connected to the main control module.

The working mode of the load current detection module is as follows:

the first current transformer CT1 is used for detecting and obtaining equal-proportion current of a load, equal-proportion alternating voltage is obtained at a first resistor R1 which is connected to two ends of the first current transformer CT1, then filtering is carried out on a filter circuit which is composed of a first capacitor C1, a second capacitor C2, a third capacitor C3, a second resistor R2, a FB1 first magnetic bead and a FB2 second magnetic bead, proportional amplification is carried out on a negative feedback amplifier which is composed of a third resistor R3, a fourth capacitor C4, a fifth capacitor C5 and a first operational amplifier A1, and the negative feedback amplifier is output by an operational amplifier, the amplification factor of the first operational amplifier A1 is determined by the resistance value proportion of the third resistor R3 and the fourth resistor R4, the fourth capacitor C4 is used for phase compensation, the in-phase input end of the first operational amplifier A1 can be connected with a reference power supply, so that the filtered and smoothed alternating voltage is modulated on the reference voltage, and the first operational amplifier A1 can carry out full-wave amplification on the alternating voltage signal; the proportionally amplified alternating-current voltage is filtered by an RC filter circuit consisting of a fifth resistor R5 and a fifth capacitor C5 and then is sent to the main control module to be detected by the main control module to obtain the input current of the load.

Example 3

This example is based on the technical solution of example 1.

In this embodiment, referring to fig. 3, the alternating voltage detection module includes a voltage transformer PT1, a plurality of resistors, a plurality of capacitors, a plurality of magnetic beads, and a second operational amplifier A2;

one end of a sixth resistor R6 is connected with the AC-L of the external alternating current power supply, the other end of the sixth resistor R is connected with the second end of the primary side of a voltage transformer PT1, namely a No. 2 pin, and the first end of the primary side of the voltage transformer PT1, namely a No. 1 pin, is connected with the AC-N of the external alternating current power supply;

one end of the seventh resistor R7 is connected with the first end of the secondary side of the voltage transformer PT1, namely the 3 rd pin, one end of the sixth capacitor C6, one end of the eighth resistor R8 and one end of the FB3 third magnetic bead; the other end of the seventh resistor R7 is connected with a second end of a secondary side of the voltage transformer PT1, namely a pin 4, one end of a seventh capacitor C7, one end of an eighth capacitor C8 and one end of a FB4 fourth magnetic bead; the other end of the eighth capacitor C8 is connected with the other end of the eighth resistor R8;

the other end of the FB3 third bead is connected to the non-inverting input terminal of the second operational amplifier A2, the other end of the FB4 fourth bead is connected to one end of a ninth resistor R9, and the other end of the ninth resistor R9 is connected to the inverting input terminal of the second operational amplifier A2, one end of a tenth resistor R10, and one end of a ninth capacitor C9; the output end of the second operational amplifier A2, the other end of the tenth resistor R10 and the other end of the ninth capacitor C9 are connected to one end of an eleventh resistor R11, the other end of the eleventh resistor R11 is grounded through the tenth capacitor C10, and the other end of the eleventh resistor R11 is further connected to the main control module;

the positive power supply end of the second operational amplifier A2 is connected with a direct current source, and the negative power supply end is grounded.

The working mode of the alternating voltage detection module is as follows:

the sixth resistor R6 realizes current limiting firstly, then the voltage transformer PT1 converts the voltage into an equal-proportion current signal, an equal-proportion alternating current voltage is obtained through the seventh resistor R7, the equal-proportion alternating current voltage is filtered through the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the eighth resistor R8, the FB3 third magnetic bead and the FB4 fourth magnetic bead together, and the filtered alternating current voltage is sent to the second operational amplifier A2 to realize negative feedback amplification, wherein the resistance ratio of the ninth resistor R9 and the tenth resistor R10 determines the amplification times of operational amplification, the ninth capacitor C9 performs phase compensation, the non-inverting input end of the operational amplifier U7B is connected with a reference power supply and is used for modulating the filtered and smoothed alternating current voltage on the reference voltage, so that the second operational amplifier A2 can perform full-wave amplification on the alternating current voltage signal; and finally, the alternating voltage is subjected to RC filtering through an eleventh resistor R11 and a tenth capacitor C10, and the filtered voltage is monitored by the main control module.

Example 4

This example is based on the technical solution of example 1.

As a preferred scheme, referring to fig. 4, the alternating current zero-crossing detection module includes a plurality of resistors, a first diode D1, a first optocoupler U1, a plurality of capacitors C12, and a first NPN triode Q1;

the twelfth resistor R12 is connected with the AC-L of the external alternating current power supply, the twelfth resistor R12 is sequentially connected with the thirteenth resistor R13 and the fourteenth resistor R14 in series, and the fourteenth resistor R14 is connected to the first end of the first optocoupler U1;

the cathode of the first diode D1 is connected to the AC-N end of the external alternating current power supply, and the anode of the first diode D1 is connected to the second end of the first optocoupler U1;

a third end of the first optocoupler U1 is connected to one end of an eleventh capacitor C11, one end of a fifteenth resistor R15 and one end of a sixteenth resistor R16, and the other end of the eleventh capacitor C11 and the other end of the fifteenth resistor R15 are grounded; the fourth end of the first optocoupler U1 is connected with one end of a seventeenth resistor R17 and a direct current source;

the base electrode of the first NPN triode Q1 is connected to the other end of the sixteenth resistor R16, the collector electrode of the first NPN triode Q1 is connected to the other end of the seventeenth resistor R17, the emitter electrode of the first NPN triode Q is grounded, and the other end of the seventeenth resistor R17 is also connected with the main control module.

The implementation manner of the alternating current zero-crossing detection module in this embodiment is as follows:

the twelfth resistor R12, the thirteenth resistor R13, and the fourteenth resistor R14 are configured to step down, the first diode D1 is configured to half-wave rectification, the first optocoupler U1 plays a role in isolating the first NPN triode Q1, the eleventh capacitor C11 is a filter capacitor, the fifteenth resistor R15 is a pull-down resistor of an emitter of the first NPN triode Q1, the sixteenth resistor R16 is a pull-up resistor of a base of the first NPN triode Q1, the first NPN triode Q1 amplifies a high-low level signal output by the first optocoupler U1, and a collector of the first NPN triode Q1 outputs a zero-crossing signal level of the ac voltage.

Example 5

This example is based on the solution of example 1.

Further, the relay switch lamp driving module described with reference to fig. 5 includes a plurality of resistors, a second diode D2, a first relay K1, and a second NPN transistor Q2; the first relay K1 comprises a relay coil and two normally open contacts;

one end of an eighteenth resistor R18 is connected with the main control module, the other end of the eighteenth resistor R18 is connected with one end of a nineteenth resistor R19 and a base electrode of a second NPN triode Q2, the other end of the nineteenth resistor R19 and an emitting electrode of the second NPN triode Q2 are grounded, a collector electrode of the second NPN triode Q2 is connected with one end of a relay coil and an anode of a second diode D2, the other end of the relay coil is connected with a cathode and a direct current source of the second diode D2, and two normally-open contacts are respectively connected into a live wire and a zero line of the external lighting system.

The working mode of the relay switch lamp driving module is as follows:

when the main control module outputs a high level, the second NPN triode Q2 is conducted, so that the first relay K1 is electrified, and a normally open contact of the relay is closed; on the contrary, when the main control module transmits a low level, the second NPN triode Q2 is turned on and off, the first relay K1 is de-energized, and the normally open contact of the first NPN triode Q is turned off, the eighteenth resistor R18 and the nineteenth resistor R19 protect the second NPN triode Q2 from being damaged by a large current and turned on by external interference, and the second diode D2 is used for preventing the circuit from being influenced by a reverse electromotive force at the moment when the first relay K1 is turned off.

Example 6

This example is based on the solution of example 1.

In this embodiment, the leakage current detection module may also include a collection unit and an amplification unit.

The acquisition unit is realized based on a second current transformer, the center of a magnetic core of the second current transformer penetrates through a live wire of an external alternating current power supply, when the inflow current value of the live wire is unequal to the reflux current value of a zero line, the second current transformer induces a corresponding current value, the current value is sent to the amplification unit, and the current value is amplified and converted into current and voltage to be used by the main control module.

Claims (6)

1. An intelligent lighting monitoring circuit based on multimode communication is characterized by comprising a main control module, an alternating voltage detection module, a load current detection module, a leakage current detection module, a temperature sensor, an inclination angle sensor, an illuminance sensor, a power carrier and RF wireless communication modulation and demodulation module, a clock module, an alternating current zero-crossing detection module, a relay switch lamp driving module, a dimming module and an alternating current-direct current conversion module;

the output end of the inclination angle sensor, the output end of the illumination sensor, the power carrier and RF wireless communication modulation and demodulation module, the clock module, the output end of the alternating voltage detection module, the output end of the load current detection module, the output end of the leakage current detection module, the output end of the alternating current zero-crossing detection module, the output end of the temperature sensor, the input end of the relay switch lamp driving module and the input end of the dimming module are respectively connected to the main control module;

the detection ends of the alternating voltage detection module, the load current detection module and the alternating current zero-crossing detection module are connected to an external alternating current power supply; an external alternating current power supply is connected to an external lighting system through the output end of the relay switch lamp driving module; the output end of the dimming module is connected to an external lighting system; the temperature sensor, the inclination angle sensor and the illumination sensor are respectively arranged at the external lighting system; the output end of the relay switch lamp driving module is connected to the power input end of an external lighting system;

and the power supply end of the main control module is connected to an external alternating current power supply through the alternating current-direct current conversion module.

2. The multimode communication based intelligent lighting monitoring circuit of claim 1, wherein the dimming module comprises a DA conversion output circuit and a digital amplification circuit which are connected in sequence.

3. The intelligent lighting monitoring circuit based on multimode communication as claimed in claim 1, wherein the load current detection module comprises a first current transformer, a plurality of resistors, a plurality of capacitors, a plurality of magnetic beads and a first operational amplifier; the center of a magnetic core of the first current transformer penetrates through a live wire of the external alternating current power supply;

the first current transformer and the first resistor are connected in parallel, one end of the first resistor is connected to one end of the first capacitor, one end of the third capacitor and one end of the first magnetic bead, and the other end of the first capacitor is grounded; the other end of the first resistor is connected to one end of the second capacitor, one end of the second resistor and one end of the second magnetic bead, and the other end of the second capacitor is grounded; the other end of the second resistor is connected with the other end of the third capacitor;

the other end of the first magnetic bead is connected to one end of a third resistor, the other end of the third resistor is connected to one end of a fourth capacitor, one end of a fourth resistor and the reverse input end of the first operational amplifier, and the other end of the second magnetic bead is connected to the non-inverting input end of the first operational amplifier;

the output end of the first operational amplifier, the other end of the fourth capacitor and the other end of the fourth resistor are connected to one end of a fifth resistor, the other end of the fifth resistor is grounded through the fifth capacitor, and the other end of the fifth resistor is further connected to the main control module.

4. The intelligent lighting monitoring circuit based on multimode communication as claimed in claim 1, wherein the alternating voltage detection module comprises a voltage transformer, a plurality of resistors, a plurality of capacitors, a plurality of magnetic beads and a second operational amplifier;

one end of the sixth resistor is connected with the AC-L of the external alternating current power supply, the other end of the sixth resistor is connected with the second end of the primary side of the voltage transformer, and the first end of the primary side of the voltage transformer is connected with the AC-N of the external alternating current power supply;

one end of the seventh resistor is connected with the first end of the secondary side of the voltage transformer, one end of the sixth capacitor, one end of the eighth resistor and one end of the third magnetic bead; the other end of the seventh resistor is connected with the second end of the secondary side of the voltage transformer, one end of the seventh capacitor, one end of the eighth capacitor and one end of the fourth magnetic bead; the other end of the eighth capacitor is connected with the other end of the eighth resistor;

the other end of the third magnetic bead is connected to the non-inverting input end of the second operational amplifier, the other end of the fourth magnetic bead is connected to one end of a ninth resistor, and the other end of the ninth resistor is connected to the inverting input end of the second operational amplifier, one end of a tenth resistor and one end of a ninth capacitor; the output end of the second operational amplifier, the other end of the tenth resistor and the other end of the ninth capacitor are connected to one end of an eleventh resistor, the other end of the eleventh resistor is grounded through the tenth capacitor, and the other end of the eleventh resistor is also connected to the main control module;

the positive power supply end of the second operational amplifier is connected with a direct current source, and the negative power supply end of the second operational amplifier is grounded.

5. The intelligent lighting monitoring circuit based on multimode communication is characterized in that the alternating current zero-crossing detection module comprises a plurality of resistors, a first diode, a first optical coupler, a plurality of capacitors C12 and a first NPN triode;

the twelfth resistor is connected with the AC-L of the external alternating current power supply, the twelfth resistor is sequentially connected with the thirteenth resistor and the fourteenth resistor in series, and the fourteenth resistor is connected to the first end of the first optocoupler;

the cathode of the first diode is connected to the AC-N end of the external alternating current power supply, and the anode of the first diode is connected to the second end of the first optical coupler;

the third end of the first optocoupler is connected to one end of an eleventh capacitor, one end of a fifteenth resistor and one end of a sixteenth resistor, and the other end of the eleventh capacitor and the other end of the fifteenth resistor are grounded; the fourth end of the first optocoupler is connected with one end of a seventeenth resistor and a direct current source;

and a base electrode of the first NPN triode is connected to the other end of the sixteenth resistor, a collector electrode of the first NPN triode is connected to the other end of the seventeenth resistor, an emitting electrode of the first NPN triode is grounded, and the other end of the seventeenth resistor is also connected with the main control module.

6. The intelligent lighting monitoring circuit based on multimode communication of claim 5, wherein the relay switch lamp driving module comprises a plurality of resistors, a second diode, a first relay, a second NPN triode; the first relay comprises a relay coil and two normally open contacts;

one end of the eighteenth resistor is connected with the main control module, the other end of the eighteenth resistor is connected to one end of the nineteenth resistor and the base electrode of the second NPN triode, the other end of the nineteenth resistor and the emitting electrode of the second NPN triode are grounded, the collecting electrode of the second NPN triode is connected to one end of the relay coil and the anode of the second diode, the other end of the relay coil is connected to the cathode of the second diode and the direct current source, and the two normally-open contacts are respectively connected with the live wire and the zero line of the external lighting system.

Images