CN210298149U

CN210298149U - LED street lamp control system

Info

Publication number: CN210298149U
Application number: CN201920858518.7U
Authority: CN
Inventors: 秦茂荣; 甘露; 周小芬; 黄超
Original assignee: Chengyiguang Construction Co Ltd
Current assignee: Chengyiguang Construction Co Ltd
Priority date: 2019-06-10
Filing date: 2019-06-10
Publication date: 2020-04-10
Anticipated expiration: 2029-06-10

Abstract

The utility model relates to a LED control field, concretely relates to LED street lamp control system. The utility model provides a LED street lamp control system samples the electric current of LED street lamp through sampling circuit, feeds back to drive circuit then, and the output of control LED street lamp has realized the constant current control of LED street lamp, simultaneously, increases delay circuit in control circuit to get rid of the scintillation of LED street lamp when opening, circuit structure is simple, the stable performance, and user experience is better.

Description

LED street lamp control system

Technical Field

The utility model relates to a LED control field, concretely relates to LED street lamp control system.

Background

With the development of the times, the LED street lamp gradually replaces the status of incandescent lamps due to a series of advantages of low energy consumption, small volume, long service time, controllable color temperature and the like, and is increasingly applied to various occasions by people. However, with the improvement of living standard of people, the requirements on the LED street lamp are higher and higher, and the problems of flicker, unstable color temperature and the like are often generated due to voltage change in the existing LED control, so that the use experience of users is greatly influenced.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: the LED street lamp control system is provided for solving the problems that the existing LED street lamp is easy to flicker due to unstable voltage and unstable color temperature.

In order to realize the purpose, the utility model discloses a technical scheme be:

an LED street lamp control system comprising:

the system comprises a remote server, a terminal control device and an LED street lamp;

the remote server is connected with the plurality of terminal control devices in a wired or wireless mode; each terminal control device controls at least one LED street lamp;

the terminal controller comprises a control circuit, a driving circuit, a sampling circuit, a switching circuit and an auxiliary control circuit;

the control circuit is used for receiving a remote server control signal and indicating the drive circuit to work;

the enabling end of the driving circuit is connected with the control circuit, and the power input end of the driving circuit is connected with the driving power supply and used for driving the LED street lamp according to the instruction of the control circuit;

the sampling circuit is coupled with the LED street lamp and is used for collecting the current of the LED street lamp and feeding back a sampling current signal to the driving circuit;

the switch circuit is arranged between the drive circuit and the LED street lamp and is used for controlling the LED street lamp to be turned on or off according to a control signal of the drive circuit;

the auxiliary control circuit comprises an auxiliary power supply and a delay circuit, and the auxiliary power supply is connected with the control circuit and the delay circuit at the same time; and the output end of the delay circuit is connected with the output end of the control circuit.

Furthermore, a filter circuit is further arranged between the drive circuit and the switch circuit and is used for filtering the control signal.

Furthermore, the delay circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a first triode and a first MOS (metal oxide semiconductor) tube;

the first end of the first resistor is connected with an auxiliary power supply, the second end of the first resistor is simultaneously connected with the first end of the second resistor and the emitting electrode of the first triode, the other end of the second resistor is grounded through a first capacitor, the base electrode of the first triode is connected with the first end of the third resistor, the second end of the third resistor is connected with the joint of the second resistor and the first capacitor, the collector electrode of the first triode is simultaneously connected with the first end of the fourth resistor and the grid electrode of the first MOS tube, and the second end of the fourth resistor is grounded with the source electrode of the first MOS tube; and the drain electrode of the first MOS tube is the output end of the delay circuit.

Further, the filter circuit is an LC filter circuit; the circuit comprises a fifth resistor and a second capacitor, wherein the fifth resistor is connected between the control end of the switch circuit and the ground, and the second capacitor is connected between the control end of the switch circuit and the ground.

Further, the device also comprises a sensor circuit, wherein the output end of the sensor circuit is connected with the control circuit; the sensor circuit comprises one or more of a photosensitive sensor, a sound sensor and an infrared sensor, and the sensor circuit is arranged to sense light intensity, sound or biological movement in the environment, so that automatic control of the LED switch is realized.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the utility model provides a LED street lamp control system, the wired mode of accessible or wireless mode remote control LED street lamp, just, the utility model discloses in, terminal control device samples the electric current of LED street lamp through sampling circuit, feeds back to drive circuit then, controls the output of LED street lamp, has realized the constant current control of LED street lamp, simultaneously, increases delay circuit in the control circuit to get rid of the scintillation of when LED street lamp is opened, circuit structure is simple, stable performance, and user experience is better.

Drawings

Fig. 1 is a schematic block diagram of the present invention.

Fig. 2 is a schematic diagram of a circuit layout of an LED street lamp and a sensor according to an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of the present invention.

Fig. 4 is a diagram of the driving circuit, the switching circuit and the filter circuit of the present invention.

Fig. 5 is a circuit diagram of the delay circuit of the present invention.

Fig. 6 is a circuit diagram of the control circuit of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to 6, an LED street lamp control system includes a remote server 300, a terminal control device 200, and an LED street lamp 100; the remote server 300 is connected to the plurality of terminal control apparatuses 200 by wire or wirelessly; each terminal control device 200 controls at least one LED street lamp 100; preferably, each of the end control devices 200 controls one LED street lamp 100, but in other embodiments; each terminal control device 200 may control more than 2 LED street lamps 100

The terminal controller 200 comprises a control circuit 8, a driving circuit 2, a sampling circuit 7, a switch circuit 3 and an auxiliary control circuit 9; the control circuit 8 is configured to receive a control signal sent by the remote server 300 and instruct the driving circuit 2 to operate, where the control signal may be received in a wired or wireless manner, and in some embodiments, the control signal is received by a wireless module connected to an output end of the control circuit 8, where the wireless module may be, for example, a WIFI module, a bluetooth module, or a 5G communication module; the enable end CTRL of the driving circuit 2 is connected with the output end of the control circuit 8, the power supply input end VCC of the driving circuit 2 is connected with the driving power supply 1, and the driving circuit 2 drives the LED street lamp according to the instruction of the control circuit 8; the sampling circuit 7 is coupled to the LED street lamp 100 and configured to collect a current of the LED street lamp 100, and the sampling circuit 7 performs signal processing on the output current and outputs a sampling current signal, where the sampling current signal is a current signal or a voltage signal in a proportional relationship with the output current of the LED street lamp 100, and feeds back the sampling current signal or the voltage signal to the driving circuit 2. In a specific embodiment, the driving circuit 2 compares the sampling current signal with a preset sampling current signal and outputs a difference value, and if the sampling current signal is greater than the sampling current signal, outputs a control signal to reduce the output current of the LED street lamp 100, and if the sampling current signal is less than the sampling current signal, outputs a control signal to increase the output current of the LED street lamp 100. The switch circuit 3 is arranged between the driving circuit 2 and the LED street lamp 100, and is used for controlling the LED street lamp 100 to be turned on or off according to a control signal of the driving circuit 2.

Meanwhile, a filter circuit is further arranged between the drive circuit 2 and the switch circuit and is used for filtering the control signal. The filter circuit is an LC filter circuit; the switch circuit comprises a fifth resistor R2 and a second capacitor C1, wherein the fifth resistor R2 is connected between the control end of the switch circuit 3 and the ground, and the second capacitor C1 is connected between the control end of the switch circuit 3 and the ground.

The system provided by this embodiment further includes an auxiliary control circuit 9, where the auxiliary control circuit 9 includes an auxiliary power supply 91 and a delay circuit 92, and the auxiliary power supply 91 (vin 1 indicates the output end of the auxiliary power supply 91 in fig. 1) is connected to the control circuit 8 and the delay circuit 92 at the same time; an output terminal of the delay circuit 92 is connected to an output terminal of the control circuit 8. The delay circuit 92 comprises a first resistor R3, a second resistor R4, a third resistor R5, a fourth resistor R6, a first capacitor C2, a first triode T1 and a first MOS transistor, wherein a first end of the first resistor R3 is connected with the auxiliary power supply 91, a second end of the first resistor R4 is connected with a first end of the second resistor R4 and an emitter of the first triode T1, the other end of the second resistor R4 is grounded through the first capacitor C2, a base of the first triode T1 is connected with a first end of the third resistor R5, a second end of the third resistor R5 is connected with a joint of the second resistor R4 and the first capacitor C2, a collector of the first triode T1 is connected with a first end of the fourth resistor R6 and a gate of the first MOS transistor Q2, and a second end of the fourth resistor R6 is connected with a source of the first MOS transistor Q2; the drain of the first MOS transistor Q2 is the output end of the delay circuit. The control circuit 8 receives a control signal from the outside through a receiving terminal, and the control signal can be from a wireless receiving circuit (a wifi module, a bluetooth module, etc.), and also comprises the sensor circuit 6; in the boosting process of the auxiliary power supply 91, the triode Q100 outputs a high level to CTRL in error due to a low level of the receiving terminal, resulting in an instantaneous flicker phenomenon of the LED; the delay circuit 92 is used for detecting whether the auxiliary power supply 91 reaches a rated working voltage, when the auxiliary power supply 91 does not reach the rated working voltage, the first MOS tube Q2 is conducted, the delay circuit 92 keeps outputting a low level to CTRL, and the LED lamp cannot be lighted by mistake; when vin1 reaches the rated voltage, the first MOS transistor Q2 is turned off, and the CTRL input signal is determined by the control circuit 8, thereby achieving the purpose of control. The sensor circuit 6 is arranged on the road side between the LED street lamps as shown in FIG. 2, and the output end of the sensor circuit 6 is connected with the control circuit 8; the sensor circuit 6 comprises one or more of a photosensitive sensor, an acoustic sensor and an infrared sensor, and the sensor circuit 6 is arranged to sense light intensity, sound or biological movement in the environment, so that the LED street lamp can be finely controlled according to the field environment.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An LED street lamp control system, comprising:

the terminal control device comprises a control circuit, a driving circuit, a sampling circuit, a switching circuit and an auxiliary control circuit;

2. The system of claim 1, further comprising a sensor circuit, an output of the sensor circuit being connected to the control circuit;

the sensor circuit comprises one or more of a photosensitive sensor, an acoustic sensor and an infrared sensor.

3. The system of claim 1, wherein the delay circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a first capacitor, a first transistor, and a first MOS transistor;

4. The system of claim 1, wherein a filter circuit is further disposed between the driving circuit and the switch circuit for filtering the control signal.

5. The system of claim 4, wherein the filter circuit is an LC filter circuit; the circuit comprises a fifth resistor and a second capacitor, wherein the fifth resistor is connected between the control end of the switch circuit and the ground, and the second capacitor is connected between the control end of the switch circuit and the ground.