CN215601530U - Street lamp control circuit, street lamp controller and street lamp - Google Patents
Street lamp control circuit, street lamp controller and street lamp Download PDFInfo
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- CN215601530U CN215601530U CN202022987459.9U CN202022987459U CN215601530U CN 215601530 U CN215601530 U CN 215601530U CN 202022987459 U CN202022987459 U CN 202022987459U CN 215601530 U CN215601530 U CN 215601530U
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Abstract
The utility model discloses a street lamp control circuit, a street lamp controller and a street lamp, wherein the street lamp control circuit comprises: a lamp power input terminal; the input end of the lamp control circuit is connected with the power supply input end of the lamp, and the output ends of the lamp control circuit are connected with the power supply ends of the lamps; the Cat.1 communication circuit is in communication connection with the server and used for receiving and outputting a control signal sent by the server; each sampling end of the sampling circuit is connected with each lamp so as to sample the working parameters of each lamp and output corresponding sampling signals; the main controller is used for receiving the control signal output by the Cat.1 communication circuit and outputting a lamp control signal corresponding to the control signal to the lamp control circuit so as to control each lamp to work; the main controller is also used for receiving the sampling signal output by the sampling circuit and sending the sampling signal to the server through the Cat.1 communication circuit. The street lamp control circuit can meet the communication requirement of monitoring the existing street lamp.
Description
Technical Field
The utility model relates to the technical field of street lamps, in particular to a street lamp control circuit, a street lamp controller and a street lamp.
Background
The monitoring center in the existing street lamp can monitor each street lamp through power carrier, wireless communication working in ISM frequency band, NB-IoT network, Cat.4 network, GPRS network and the like. However, the power line carrier communication has the problems of complex system, high cost, slow communication speed and unstable communication quality; the wireless communication working in the ISM frequency band has the problems of high cost, difficult system erection and maintenance and easy communication quality, and the communication schemes of the two fail to ensure the communication of subsequent nodes when the intermediate routing node is damaged; the NB-IoT network is suitable for occasions which are not sensitive to delay, low in speed and short in data packet, and cannot meet the requirement of real-time control of street lamps; the Cat.4 network communication needs to adopt a high-cost Cat.4 three-network communication module, so that the method is not suitable for large-scale popularization; as for GPRS network communication (2G), it is not suitable for 4G/5G network architecture with gradually full coverage.
In conclusion, the communication scheme of the existing wireless street lamp cannot meet the monitoring requirement of the existing street lamp.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide a street lamp control circuit, aiming at meeting the communication requirement of monitoring the existing street lamp.
In order to achieve the above object, the present invention provides a street lamp control circuit, which is applied to a street lamp, wherein the street lamp comprises a plurality of lamps; the street lamp control circuit includes:
a lamp power input terminal;
the input end of the lamp control circuit is connected with the power supply input end of the lamp, the lamp control circuit is provided with a plurality of output ends, and each output end is connected with the power supply end of each lamp;
the Cat.1 communication circuit is in communication connection with the server and used for receiving and outputting a control signal sent by the server;
the sampling circuit is provided with a plurality of sampling ends, and each sampling end is connected with each lamp to be used for sampling the working parameters of each lamp and outputting a corresponding sampling signal;
the main controller is respectively connected with the output end of the Cat.1 communication circuit, the controlled end of the lamp control circuit and the output end of the sampling circuit, and is used for receiving the control signal output by the Cat.1 communication circuit and outputting the lamp control signal corresponding to the control signal to the lamp control circuit so as to control the work of each lamp;
the main controller is also used for receiving the sampling signal output by the sampling circuit and sending the sampling signal to a server through the Cat.1 communication circuit.
Optionally, the luminaire control circuit comprises: a multi-way switch circuit and a multi-way dimming circuit; the switching circuits are connected in series with the dimming circuits to form a lamp control branch, the input end of each lamp control branch is connected with a power supply, and the output end of each lamp control branch is connected with the power supply end of each lamp; the controlled ends of the switching circuits and the dimming circuits are connected with the main controller, so that the power supply and the brightness of the lamps are respectively controlled under the control of the main controller.
Optionally, the main controller is further configured to output a warning signal to the cat.1 communication circuit when it is determined that the lamp is in fault according to the sampling signal, so that the cat.1 communication circuit sends the warning signal to a server.
Optionally, the street lamp control circuit further comprises an electric leakage detection circuit and a prompt circuit;
the detection end of the electric leakage detection circuit is connected with the power supply end of each lamp, and the output end of the electric leakage detection circuit is connected with the main controller; the leakage detection circuit is used for detecting the power supply current input to each lamp and/or output by each lamp and outputting a first leakage detection signal;
the main controller is further used for controlling the lamp control circuit to disconnect the corresponding lamp from the lamp power input end according to the first electric leakage detection signal, controlling the prompt circuit to send corresponding prompt information, and sending the first electric leakage detection signal to the server through the Cat.1 communication circuit.
Optionally, the street light further comprises a light pole body; the electric leakage detection circuit is also provided with detection ends respectively connected with the lamp post main body and the mains supply power grid, and is also used for respectively detecting the voltage and/or the current of the lamp post main body and the mains supply power grid and outputting a second electric leakage detection signal and a third electric leakage detection signal to the main controller;
and the main controller is also used for controlling the lamp control circuit, the prompting circuit and the Cat.1 communication circuit to work when the electric leakage of the lamp post main body is determined according to the second electric leakage detection signal and the third electric leakage detection signal.
Optionally, the street lamp control circuit further includes a debugging signal input end, and the debugging signal input end is used for accessing a debugging signal output by an external debugging device.
Optionally, the street lamp control circuit further comprises a power supply circuit, an input end of the power supply circuit is connected with a mains power grid, and an output end of the power supply circuit is connected with a power supply end of the lamp power supply input end, the cat.1 communication circuit, the sampling circuit, the main controller, the electric leakage detection circuit and the prompt circuit respectively.
Optionally, the street lamp control circuit further comprises an overcurrent protection circuit, and two ends of the overcurrent protection circuit are respectively connected with the output end of the power supply circuit and the input end of the lamp power supply; each overcurrent protection circuit is used for disconnecting the connection between the power supply input end of the lamp and the power supply circuit when detecting that the current flowing into the power supply input end of the lamp is overcurrent.
The utility model also provides a street lamp controller, comprising:
a housing;
the circuit board is accommodated in the shell; and
according to the street lamp control circuit, the lamp power supply input end, the lamp control circuit, the Cat.1 communication circuit, the sampling circuit and the main controller in the street lamp control circuit are arranged on the circuit board.
The utility model also proposes a street lamp comprising:
a lamp post body;
the lamp is arranged on the lamp post main body; and
the street lamp controller is arranged in the lamp post main body and connected with each lamp.
The street lamp control circuit is provided with the lamp power supply input end, the lamp control circuit, the Cat.1 communication circuit, the sampling circuit and the main controller, and the main controller can obtain a control signal sent by the server through the Cat.1 communication circuit, further drive the lamp control circuit to control the operation of each lamp according to the control signal, and send the sampling signal output by the sampling circuit to the server through the Cat.1 communication circuit for a user to obtain. The street lamp control circuit can seamlessly access the existing LTE network by adopting the Cat.1 communication circuit without setting an intermediate routing node and upgrading software and hardware aiming at a base station, and compared with a Cat.4 module circuit, the street lamp control circuit has the advantages that the overall power consumption is reduced by nearly 20%, the price cost is low, the integration level is higher, compared with an NB-IoT network, the maximum downlink rate is 10Mbps, the maximum uplink rate is 5Mbps, and the real-time monitoring requirement of the street lamp can be better met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a functional structure diagram of a street lamp control circuit according to an embodiment of the present invention;
FIG. 2 is a functional structure diagram of another embodiment of the street lamp control circuit of the present invention;
FIG. 3 is a schematic circuit diagram of a dimming circuit according to an embodiment of the street lamp control circuit of the present invention;
fig. 4 is a schematic circuit structure diagram of an overcurrent protection circuit in an embodiment of the street lamp control circuit of the utility model;
FIG. 5 is a schematic circuit diagram of a leakage detection circuit according to an embodiment of the street lamp control circuit of the present invention;
FIG. 6 is a schematic diagram of a wiring structure of an embodiment of the street lamp controller according to the utility model;
fig. 7 is a schematic view of an embodiment of a street lamp according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | Power input terminal of |
80 | Debug |
| 20 | |
90 | |
| 21 | |
100 | |
| 22 | Light modulation circuit | C1～C12 | Capacitor with a |
| 30 | Cat.1 communication circuit | R1～R17 | Resistance (RC) |
| 40 | Sampling circuit | F1 | |
| 50 | Main controller | U1 | |
| 60 | Electric leakage detection circuit | CT1～CT3 | |
| 70 | Prompting circuit | L、N | Live wire and zero line |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a street lamp control circuit which is connected with a correspondingly controlled street lamp, a communication circuit of the street lamp control circuit is communicated with the outside without a gateway, the cost is low, and the street lamp control circuit has great advantages of realizing the on/off of the street lamp, adjusting the brightness of the street lamp, detecting faults and the like.
To solve the above problem, referring to fig. 1 to 7, in an embodiment of the present invention, the street lamp control circuit includes:
a lamp power input 10;
the lamp control circuit 20, an input end of the lamp control circuit 20 is connected with the lamp power input end 10, the lamp control circuit 20 has a plurality of output ends, and each output end is connected with a power supply end of each lamp;
the Cat.1 communication circuit 30 is in communication connection with the server, and is used for receiving and outputting a control signal sent by the server;
the sampling circuit 40 is provided with a plurality of sampling ends, and each sampling end is connected with each lamp to sample the working parameters of each lamp and output corresponding sampling signals;
the main controller 50 is respectively connected with the output end of the cat.1 communication circuit 30, the controlled end of the lamp control circuit 20 and the output end of the sampling circuit 40, and the main controller 50 is configured to receive the control signal output by the cat.1 communication circuit 30 and output a lamp control signal corresponding to the control signal to the lamp control circuit 20 so as to control the operation of each lamp;
the main controller 50 is further configured to receive the sampling signal output by the sampling circuit 40, and send the sampling signal to a server through the cat.1 communication circuit 30.
In this embodiment, the lamp power input terminal 10 is used for accessing a power voltage matched with the operating voltage of each lamp.
The lamp control circuit 2013 can be formed by combining power switch devices such as relays and circuit breakers and electronic switch devices such as MOS (metal oxide semiconductor) tubes and IGBTs. The lamp control circuit 20 may control the on/off states of each switching device in itself according to the received control signal, and implement various control effects on each lamp by making different switching devices in different operating states, for example: the on/off control of each lamp can be realized by controlling the on/off state of each switching device on the main loop between each lamp power supply terminal and the lamp power supply input terminal 10, or the light brightness control of each lamp can be realized by controlling the on/off frequency of the PWM switching device on each main loop.
The cat.1 communication circuit 30 can be implemented by a cat.1 rf module. The cat.1 communication circuit 30 may be provided with an antenna and other radio frequency transceiver components, and the cat.1 communication circuit 30 may receive various control signals in the form of electromagnetic waves output by an operator from the monitoring center through the server through the radio frequency transceiver components, and output the control signals in the form of electrical signals after performing magnetoelectric conversion on the control signals.
The sampling circuit 40 can be implemented by an electrical parameter acquisition circuit such as a current sampling circuit 40 and a voltage sampling circuit 40. The sampling circuit 40 may obtain various electrical parameters of each lamp during operation through low current discharge or voltage division by a voltage dividing resistor, for example: the current parameter and the voltage parameter, and can output corresponding current sampling signals and/or voltage sampling signals and other sampling signals.
The main controller 50 may be implemented as an MCU, DSP or FPGA, or may also be a CPU main control chip, which is preferably an MCU. The main controller 5030 may integrate a corresponding hardware circuit, a memory storing a corresponding software program or algorithm and data, and a processor for calling the memory content of the memory, and may be connected to other functional circuits in the streetlamp control circuit through a pin or a port to receive feedback signals output by the other functional circuits during operation, and may output corresponding control signals to the other functional circuits, so as to implement overall monitoring of the streetlamp control circuit. The main controller 50 can receive various control signals output by the cat.1 communication circuit 30, perform digital-to-analog conversion on the control signals, operate corresponding hardware circuits and software programs or algorithms to analyze the control signals to determine the control function of the characterization trigger, and output corresponding lamp control signals to the lamp control circuit 20 according to the determination result, so that the lamp control circuit can perform various control effects on various lamps. It is understood that the main controller 50 may also receive various sampling signals output by the sampling circuit 40, and convert the sampling signals into electrical signals conforming to the communication transmission of the cat.1 communication circuit 30 and output the electrical signals to the cat.1 communication circuit 30, so that the cat.1 communication circuit 30 may transmit the converted various sampling signals to the monitoring center in the form of electromagnetic waves through the server for the operators therein to obtain the signals in real time.
The street lamp control circuit comprises a lamp power supply input end 10, a lamp control circuit 20, a Cat.1 communication circuit 30, a sampling circuit 40 and a main controller 50, wherein the main controller 50 can obtain a control signal sent by a server through the Cat.1 communication circuit 30, further can drive the lamp control circuit 20 to control each lamp to work according to the control signal, and further can enable the main controller 50 to send the sampling signal output by the sampling circuit 40 to the server through the Cat.1 communication circuit 30 for a user to obtain. The street lamp control circuit can seamlessly access the existing LTE network by adopting the Cat.1 communication circuit 30 without setting an intermediate routing node and upgrading software and hardware aiming at a base station, and compared with a Cat.4 module circuit, the street lamp control circuit has the advantages that the overall power consumption is reduced by about 20%, the price cost is low, the integration level is higher, compared with an NB-IoT network, the maximum downlink rate is 10Mbps, the maximum uplink rate is 5Mbps, and the street lamp control circuit can better meet the real-time monitoring requirement of the street lamp.
Referring to fig. 1 to 7, in an embodiment of the present invention, the lamp control circuit 20 includes: a multi-way switching circuit 21 and a multi-way dimming circuit 22; each switch circuit 21 and each dimming circuit 22 are connected in series to form a lamp control branch, the input end of each lamp control branch is connected with the lamp power input end 10, and the output end of each lamp control branch is connected with the power supply end of each lamp; the controlled ends of each of the switch circuits 21 and each of the dimming circuits 22 are connected to the main controller 50, so as to control the power supply and brightness of each of the lamps under the control of the main controller.
In this embodiment, each switching circuit 21 may be implemented by one or a combination of a plurality of power switching devices such as a relay, a contactor, a breaker, and the like; each of the dimming circuits 22 may be implemented by a combination of discrete electronic devices such as a dimming chip, a switching device, and a resistor. Each of the switch circuits 21 and each of the dimming circuits 22 are connected in series, and the lamp control branch formed by the switch circuits and the dimming circuits is respectively connected between the lamp power supply terminals and the lamp power supply input terminal 10, and an input terminal of either one of the switch circuits and the dimming circuits can be an input terminal of the lamp control branch, an output terminal of the other one of the switch circuits and the dimming circuits can be an output terminal of the lamp control branch, and an output terminal of the former of the switch circuits and the dimming circuits can be connected with an input terminal of the latter of the switch circuits and the dimming circuits. The lamp control signal can comprise a switch control signal and a PWM signal; each switch circuit 21 is used for controlling the main power supply of each lamp according to the received switch control signal so as to realize the start/stop control of each lamp; each dimming circuit 22 is configured to output a supply current or a supply voltage of a corresponding magnitude according to the PWM signal output by the main controller 50 when the switching circuit 21 is in an on state, so as to implement PWM dimming of each lamp. In an optional embodiment, the switching circuit 21 and the dimming circuit 22 are both two paths, and the adjustable supply voltage range of the dimming circuit 22 is 1-10V.
In an alternative embodiment, the switching circuit 21 is implemented by using two relays, the contact capacity of the relay is 16A/250V, and an arc striking circuit is designed to eliminate electric arcs possibly generated during contact action, so that the reliability of the switching circuit in operation is ensured, and the service life is prolonged. The switching circuit 21 in this embodiment includes: the relay driver comprises a relay driver chip with the model number of ULN2001D, a first relay and a second relay, wherein a pin 1C of the relay driver chip can be connected with the first relay, and a pin 2C of the relay driver chip can be connected with the second relay; the relay driving chip is also provided with a pin 1B and a pin 2B, wherein the pin 1B corresponds to the control end of the first relay, the pin 2B corresponds to the control end of the second relay, and the pin are electrically connected with the main controller 50; its E pin may be grounded. The main controller 50 can control the first relay and the second relay to be turned on and off respectively through respective control ends of the first relay and the second relay, so that the on/off control of each lamp is realized.
In another alternative embodiment, each of the dimming circuits 22 includes a capacitor C1, a capacitor C2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, and an operational amplifier U1, a first end of the resistor R3 is an input terminal of the dimming circuit 22, a second end of the resistor R3 is connected to a first end of the capacitor C2 and a non-inverting input terminal of the operational amplifier U1, a second end of the capacitor C2 is grounded, a first end of the resistor R1 is connected to an output terminal of the operational amplifier U1 and a first end of the resistor R4, a second end of the resistor R1 is connected to an inverting input terminal of the operational amplifier U1 and a first end of the resistor R2, a second end of the resistor R2 is grounded, a second end of the resistor R4 is connected to a first end of the resistor R5, and a second end of the resistor R5 is grounded. The PWM signal output by the main controller 50 is input through the non-inverting input terminal of the operational amplifier U1, and is output to the dimming chip after being subjected to operational amplification, so that the dimming chip can output a driving current of a corresponding magnitude to each lamp according to the received PWM signal, thereby realizing brightness control of each lamp. It can be understood that, through the above process, each lamp can be controlled to realize multiple lighting modes, which is not described herein again. By the arrangement, an operator can remotely start/stop control, remotely adjust light and collect data of each lamp through the server and the Cat.1 communication circuit 30.
Referring to fig. 1 to 7, in an embodiment of the present invention, the main controller 50 is further configured to output a warning signal to the cat.1 communication circuit 30 when the lamp fault is determined according to the sampling signal, so that the cat.1 communication circuit 30 sends the warning signal to a server.
In this embodiment, the main controller 50 may further store a current threshold and a voltage threshold corresponding to each lamp. The main controller 50 may also compare the received current sampling signal, voltage sampling signal, and other sampling signals of each lamp with corresponding thresholds after digital-to-analog conversion, so as to determine whether each lamp fails. For example, the main controller 50 may determine that an undercurrent or an overcurrent fault occurs in each lamp when the current sampling signal is greater than or less than the current threshold; when the voltage sampling signal is greater than or less than the voltage threshold, it is determined that an under-voltage or over-voltage fault occurs, and when it is determined that any one of the 4 faults occurs, an electrical signal (i.e., a warning signal) corresponding to the fault type and representing a warning is output to the cat.1 communication circuit 30, so that the electrical signal representing the warning can be sent to the monitoring center through the server after being subjected to electromagnetic conversion, and the monitoring center can acquire the fault type and other related information of the lamp according to the warning signal. By enabling the main controller 50 to send a warning signal to the monitoring center through the cat.1 communication circuit 30 when determining that the lamp is in fault, the monitoring center can timely notify maintenance personnel to overhaul the lamp in fault, so that the lamp can be recovered to normal work.
Referring to fig. 1 to 7, in an embodiment of the present invention, the street lamp control circuit further includes a leakage detecting circuit 60 and a prompting circuit 70;
the detection end of the electric leakage detection circuit 60 is connected with the power supply end of each lamp, and the output end of the electric leakage detection circuit 60 is connected with the main controller 50; the leakage detection circuit 60 is configured to detect a supply current input to each lamp and/or output from each lamp, and output a first leakage detection signal;
the main controller 50 is further configured to control the lamp control circuit 20 to disconnect the corresponding lamp from the lamp power input terminal 10 according to the first leakage detection signal, control the prompt circuit 70 to send out corresponding prompt information, and send the first leakage detection signal to the server through the cat.1 communication circuit 30.
In this embodiment, the leakage detecting circuit 60 may be implemented by using a current-mode hall device; the prompt circuit 70 may be implemented by a buzzer, an LED lamp, and an alarm. Each hall device can be sleeved on the live wire and the zero wire connected with the power supply end of each lamp, so as to realize the detection of the power supply current input to each lamp and the power supply current output by the power supply loop formed by each lamp. It can be understood that, when the supply current flows through the live wire and the zero wire, the leakage detecting circuit 60 may generate an induced current with a corresponding magnitude, and may output the induced current to the main controller 50 as the first leakage detecting signal, so that the main controller 50 may determine in real time whether the sum of the zero-sequence components of the input and/or output supply current is zero through the first leakage detecting signal, that is, when the zero-sequence mutual-inductance current exists in the leakage detecting circuit 60 (under a normal condition, the sum of the zero-sequence components is zero, that is, the zero-sequence mutual-inductance current does not exist in the leakage detecting circuit 60), so that the main controller 50 may determine that the supply current input to each lamp and/or each lamp has a leakage fault when detecting the first leakage detecting signal, and at this time, the main controller 50 may disconnect the lamp having the leakage fault from the lamp power input end 10 by controlling the switch circuit 21 in the lamp control circuit 20, so as to cut off the power supply and control the prompting circuit 70 to send out prompting information such as alarm sound, alarm light or vibration and the like to remind pedestrians near the street lamp.
Of course, the main controller 50 may also output an electrical signal representing the electrical leakage fault to the cat.1 communication circuit 30 when detecting the first electrical leakage detection signal, and send the electrical signal to the monitoring center through the cat.1 communication circuit 30 and the server, so that the monitoring center can timely know that the lamp has electrical leakage. Through setting up electric leakage detection circuit 60 and suggestion circuit 70, can make the operating personnel of surveillance center more comprehensive control street lamp's behavior to can in time carry out the outage protection to lamps and lanterns and remind near pedestrian when lamps and lanterns have electric leakage trouble, and still be favorable to going on of follow-up maintenance.
Referring to fig. 1 to 7, in an embodiment of the present invention, the street lamp further includes a lamp post main body; the electric leakage detection circuit 60 further has detection ends respectively connected to the lamp post main body and the utility power grid, and the electric leakage detection circuit 60 is further configured to respectively detect voltages and/or currents of the lamp post main body and the utility power grid, and output a second electric leakage detection signal and a third electric leakage detection signal to the main controller 50;
the main controller 50 is further configured to control the lamp control circuit 20, the prompting circuit 70, and the cat.1 communication circuit 30 to operate when it is determined that the lamp post body has electric leakage according to the second electric leakage detection signal and the third electric leakage detection signal.
In this embodiment, the leakage detecting circuit 60 may further include a voltage detecting device. The leakage detection circuit 60 may also detect the utility grid separately, for example: the voltage of the live wire or the zero wire and the voltage of the lamp post body output corresponding voltage detection signals; in this embodiment, the second leakage detection signal and the third leakage detection signal are both voltage detection signals.
The main controller 50 may also store a standard voltage threshold; the leakage detection circuit 60 can output the separately detected mains grid voltage and the lamp post main body voltage to the main controller 50, so that the main controller 50 can compare the voltage difference between the two with the standard voltage threshold. Under normal conditions, the difference between the two voltages should match the standard voltage threshold; when the voltage difference between the two is smaller than or larger than the standard voltage threshold, the main controller 50 can determine that the leakage voltage exists on the lamp post body at the moment, and can control the lamp control circuit 20 to disconnect each lamp from the lamp power input end 10 as above when the leakage fault is determined, so as to perform power-off protection on each lamp, and control the prompt circuit 70 to send out prompt information and output an electric signal representing the leakage fault to the cat.1 communication circuit 30. Certainly, the second leakage detection signal and the third leakage detection signal may also be current signals for determining whether there is leakage current on the lamp post body, and the determination logic may be consistent with the above determination of the leakage voltage, which is not described herein, and the leakage detection circuit 60 may be implemented by using current transformers (CT1 to CT 3). Through the detection and the prompt circuit 70 of increasing electric leakage detection circuit 60 to the lamp pole main part, can make whether there is the electric leakage on the real-time understanding lamp pole main part of surveillance center and near pedestrian to and overhaul and prevent that the mistake from touching in time.
Referring to fig. 1 to 7, in an embodiment of the present invention, the street lamp control circuit further includes a debug signal input terminal 80, where the debug signal input terminal 80 is used to access a debug signal output by an external debug device.
In this embodiment, the debug signal input 80 may be electrically connected to the main controller 50; the main controller 50 may further include a memory, and the memory may store street lamp data such as a street lamp control program, real-time sampled street lamp operating parameters, and a leakage signal. The debugging signal input end 80 can be used for enabling field maintenance personnel to access external debugging equipment to read the relevant street lamp data stored in the memory, and further determining that the street lamp has faults to carry out field maintenance; or, the on-site maintenance personnel can output corresponding debugging signals through the external debugging equipment to modify or update the street lamp data stored in the on-site maintenance personnel. For example, a clock circuit stored therein for controlling timing on/off of each lamp may be updated so that it may operate according to light signals collected by the street lamps; when the lighting time is preset (for example, at night) but the light is still sufficient, the main controller 50 can delay the lighting time of each lamp, and when the preset lighting time is not reached but the light is insufficient, the main controller 50 can control each lamp to light in advance, so that the purposes of reasonably arranging the lighting time and saving energy are achieved. In an alternative embodiment, the debug signal input 80 is a TTL debug serial port. By the arrangement, when the street lamp control circuit is applied to street lamps, convenience is provided for field maintenance and debugging of each street lamp.
Referring to fig. 1 to 7, in an embodiment of the present invention, the street lamp control circuit further includes a power circuit 90, an input end of the power circuit 90 is connected to a commercial power grid, and an output end of the power circuit 90 is respectively connected to the power input end 10 of the lamp, the cat.1 communication circuit 30, the sampling circuit 40, the main controller 50, the leakage detection circuit 60, and a power supply end of the prompt circuit 70.
In this embodiment, the power circuit 90 can be implemented by an AC-DC circuit and a DC-DC circuit. The power circuit 90 can perform corresponding voltage conversion on the alternating current of the utility power grid to convert the alternating current into multiple paths of direct currents with corresponding sizes, and then output the direct currents to power supply ends of other functional circuits in the street lamp control circuit to supply power to the street lamp control circuit, so that the utility power grid is used as a power supply of the street lamp control circuit. In an alternative embodiment, a single AC-DC circuit and three DC-DC circuits (first to third DC-DC circuits) may be provided in the power circuit 90. The AC-DC circuit is used for converting 220V commercial power alternating current into 12V direct current and then outputting the 12V direct current; the first DC-DC circuit is used for converting the 12V direct current into 3.8V direct current; the second DC-DC circuit is used for converting the 12V direct current into 5V direct current, and the third DC-DC circuit is used for converting the 5V direct current into 3.3V direct current; in this embodiment, the commercial ac power is 220V to 50HZ, and the current outputted to the main controller 50 during normal operation is 5A.
Referring to fig. 1 to 7, in an embodiment of the present invention, the street lamp control circuit further includes an overcurrent protection circuit 100, and two ends of the overcurrent protection circuit 100 are respectively connected to the output terminal of the power circuit 90 and the lamp power input terminal 10; each of the overcurrent protection circuits 100 is configured to disconnect the lamp power input terminal 10 from the power circuit 90 when detecting that the current flowing into the lamp power input terminal 10 is overcurrent.
In this embodiment, the over-current protection circuit 100 may be a fuse F1. When a plurality of lamps on the street lamp are provided, the overcurrent protection circuit 100 can be correspondingly provided with a plurality of fuses F1, each fuse F1 can be arranged between the input/output live wire (i.e. the power supply end of each lamp, i.e. the lamp power supply input end 10) of each lamp and the output end of the power circuit 90, so that when the overcurrent of the power supply current flowing through the fuse F1 is automatically detected, the connection between the lamp with the overcurrent condition and the output end of the power circuit 90 is disconnected by utilizing the fusing characteristic of the fuse F35, the lamp is protected from power failure, the lamp is prevented from being burnt out, and the fuse F1 is adopted, so that the replacement is convenient in the subsequent overhaul.
The utility model also provides a street lamp controller.
Referring to fig. 1 to 7, in an embodiment of the present invention, the street lamp controller includes:
a housing;
the circuit board is accommodated in the shell; and
in the street lamp control circuit, the lamp power input end 10, the lamp control circuit 20, the cat.1 communication circuit 30, the sampling circuit 40 and the main controller 50 in the street lamp control circuit are arranged on the circuit board.
In this embodiment, the housing is determined according to actual needs, and is not limited herein. In another optional embodiment, the street lamp controller may further include a plurality of connection terminals for connecting a ground wire, an in/out live wire of each lamp, a zero line of each lamp, an in/out live wire of a power grid, a detection line connected to the lamp post body, a device zero line lamp, and a dimming line of each lamp, so that the on-site connection is facilitated, and a virtual connection condition caused by secondary connection can be avoided. Referring specifically to fig. 6, the embodiment shown in fig. 6 is a wiring connection for two lamps (i.e., lamp 1 and lamp 2).
The street lamp controller comprises the street lamp control circuit; the detailed structure of the street lamp control circuit can refer to the above embodiments, and is not described herein again; it can be understood that, because the street lamp control circuit is used in the street lamp controller, the embodiment of the street lamp controller includes all technical solutions of all embodiments of the street lamp control circuit, and the achieved technical effects are also completely the same, and are not described herein again.
The present invention also provides a street lamp, including:
a lamp post body;
the lamp is arranged on the lamp post main body; and
the street lamp controller is arranged in the lamp post main body and connected with each lamp.
In this embodiment, the main body of the light pole may be a substantially cylindrical structure. Each lamp can be arranged at the top of the lamp post body, and it can be understood that each lamp can be gathered into different illumination parts to provide illumination for different areas; in an optional embodiment, two lighting parts are arranged at the top of the lamp post main body, and each lighting part is provided with a plurality of lamps for respectively providing lighting for the pedestrian path and the roadway.
In practical application, when a plurality of street lamps of the utility model are arranged on two sides of a road, a street lamp power distribution cabinet can be arranged at intervals of a preset distance, each street lamp power distribution cabinet can be used for monitoring all street lamps in the preset distance, and an operator can also directly perform related operations such as debugging, updating and data acquisition on all street lamps in the preset distance through the street lamp power distribution cabinets.
The street lamp comprises the street lamp controller; the detailed structure of the street lamp controller can refer to the above embodiments, and is not described herein again; it can be understood that, because the street lamp controller is used in the street lamp, the embodiment of the street lamp includes all technical solutions of all embodiments of the street lamp controller, and the achieved technical effects are also completely the same, which are not described herein again.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A street lamp control circuit is applied to street lamps and is characterized in that the street lamps comprise a plurality of lamps; the street lamp control circuit includes:
a lamp power input terminal;
the input end of the lamp control circuit is connected with the power supply input end of the lamp, the lamp control circuit is provided with a plurality of output ends, and each output end is connected with the power supply end of each lamp;
the Cat.1 communication circuit is in communication connection with the server and used for receiving and outputting a control signal sent by the server;
the sampling circuit is provided with a plurality of sampling ends, and each sampling end is connected with each lamp to be used for sampling the working parameters of each lamp and outputting a corresponding sampling signal;
the main controller is respectively connected with the output end of the Cat.1 communication circuit, the controlled end of the lamp control circuit and the output end of the sampling circuit, and is used for receiving the control signal output by the Cat.1 communication circuit and outputting the lamp control signal corresponding to the control signal to the lamp control circuit so as to control the work of each lamp;
the main controller is also used for receiving the sampling signal output by the sampling circuit and sending the sampling signal to a server through the Cat.1 communication circuit.
2. The street lamp control circuit of claim 1, wherein the luminaire control circuit comprises: a multi-way switch circuit and a multi-way dimming circuit; the switching circuits are connected in series with the dimming circuits to form a lamp control branch, the input end of each lamp control branch is connected with a power supply, and the output end of each lamp control branch is connected with the power supply end of each lamp; the controlled ends of the switching circuits and the dimming circuits are connected with the main controller, so that the power supply and the brightness of the lamps are respectively controlled under the control of the main controller.
3. The streetlamp control circuit of claim 1, wherein the main controller is further configured to output a warning signal to the cat.1 communication circuit when the lamp failure is determined according to the sampling signal, so that the cat.1 communication circuit transmits the warning signal to a server.
4. The streetlamp control circuit of claim 1, further comprising a leakage detection circuit and a prompt circuit;
the detection end of the electric leakage detection circuit is connected with the power supply end of each lamp, and the output end of the electric leakage detection circuit is connected with the main controller; the leakage detection circuit is used for detecting the power supply current input to each lamp and/or output by each lamp and outputting a first leakage detection signal;
the main controller is further used for controlling the lamp control circuit to disconnect the corresponding lamp from the lamp power input end according to the first electric leakage detection signal, controlling the prompt circuit to send corresponding prompt information, and sending the first electric leakage detection signal to the server through the Cat.1 communication circuit.
5. The streetlamp control circuit of claim 4, further comprising a post body; the electric leakage detection circuit is also provided with detection ends respectively connected with the lamp post main body and the mains supply power grid, and is also used for respectively detecting the voltage and/or the current of the lamp post main body and the mains supply power grid and outputting a second electric leakage detection signal and a third electric leakage detection signal to the main controller;
and the main controller is also used for controlling the lamp control circuit, the prompting circuit and the Cat.1 communication circuit to work when the electric leakage of the lamp post main body is determined according to the second electric leakage detection signal and the third electric leakage detection signal.
6. The streetlamp control circuit of claim 1, further comprising a debug signal input for accessing a debug signal output by an external debug device.
7. The streetlamp control circuit of claim 4, further comprising a power supply circuit, wherein an input terminal of the power supply circuit is connected to a mains power grid, and an output terminal of the power supply circuit is connected to the power supply input terminal of the lamp, the Cat.1 communication circuit, the sampling circuit, the main controller, the leakage detection circuit and the power supply terminal of the prompting circuit.
8. The streetlamp control circuit of claim 7, further comprising an overcurrent protection circuit, wherein two ends of the overcurrent protection circuit are respectively connected to the output terminal of the power supply circuit and the power input terminal of the lamp; each overcurrent protection circuit is used for disconnecting the connection between the power supply input end of the lamp and the power supply circuit when detecting that the current flowing into the power supply input end of the lamp is overcurrent.
9. A street light controller, characterized in that the street light controller comprises:
a housing;
the circuit board is accommodated in the shell; and
the streetlamp control circuit of any one of claims 1 to 8, wherein a lamp power supply input terminal, a lamp control circuit, a Cat.1 communication circuit, a sampling circuit and a main controller in the streetlamp control circuit are arranged on the circuit board.
10. A street light, characterized in that the street light comprises:
a lamp post body;
the lamp is arranged on the lamp post main body; and
a street light controller as recited in claim 9, wherein the street light controller is disposed in the post body and connected to each of the light fixtures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022987459.9U CN215601530U (en) | 2020-12-11 | 2020-12-11 | Street lamp control circuit, street lamp controller and street lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022987459.9U CN215601530U (en) | 2020-12-11 | 2020-12-11 | Street lamp control circuit, street lamp controller and street lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215601530U true CN215601530U (en) | 2022-01-21 |
Family
ID=79868719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022987459.9U Active CN215601530U (en) | 2020-12-11 | 2020-12-11 | Street lamp control circuit, street lamp controller and street lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215601530U (en) |
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2020
- 2020-12-11 CN CN202022987459.9U patent/CN215601530U/en active Active
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