Single lamp control system for lamp

Abstract

The utility model discloses a single lamp control system used for a lamp. An LED driving power supply is used for converting commercial power into DC constant current power and inputting the DC constant current power into a single lamp controller. The single lamp controller is used for controlling the LED light source. In the single lamp controller, the AC / DC constant voltage circuit is used for converting commercial power into DC direct current and then inputting the DC direct current into the DC / DC constant voltage circuit. And the DC / DC constant voltage circuit supplies power to the main control circuit. And the switch control circuit is controlled by the main control circuit to realize connection or disconnection. And the DC metering circuit is used for collecting the voltage and current of the DC constant current output by the LED driving power supply and uploading the collected data to the main control circuit so as to monitor the overvoltage or overcurrent abnormal condition of the LED light source in real time. According to the utility model, by arranging the DC metering circuit, the voltage and current entering the LED light source are monitored in real time, and the LED light source is prevented from being damaged due to overvoltage or overcurrent. When the DC metering circuit detects that the LED light source is over-voltage or over-current, the switch control circuit is switched off, so that the LED light source can be protected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to electric power control field especially relates to a single lamp control system for lamps and lanterns. BACKGROUND

[0002] The existing single lamp control system usually realizes the lighting and extinguishing of LED through the on / off control of the internal relay of the AC power supply line of the LED drive power supply, realizes the sampling calculation of the fire line current through the series connection of the internal current transformer and the LED drive power supply, and realizes the dimming function of LED through the 0-10V / PWM interface connection of the output 0-10V / PWM and the 0-10V / PWM of the LED drive power supply.

[0003] However, the existing single lamp control system has the following problems: the relay capacity is small, the switching process is sticky, the system fails; the current transformer capacity is small, the system fails due to overcurrent burning; only 0-10V / PWM can be output to control dimming, and the actual working state and dimming value of LED cannot be detected. INVENTION CONTENTS

[0004] The technical object of the utility model is to provide a single lamp control system for lamps and lanterns, so as to solve the technical problems that the existing single lamp control system is easy to fail and cannot detect the working state and dimming value in real time.

[0005] To solve the above problems, the technical scheme of the utility model is as follows:

[0006] A single lamp control system for lamps and lanterns, comprising:

[0007] An LED drive power supply, a single lamp controller and an LED light source;

[0008] The LED drive power supply is electrically connected with the commercial power and the single lamp controller respectively, and is configured to convert the commercial power into DC constant current and input to the single lamp controller;

[0009] The single lamp controller is also electrically connected with the commercial power and the LED light source, and is configured to control the working state of the LED light source;

[0010] The single lamp controller internally comprises an AC / DC constant voltage circuit, a DC / DC constant voltage circuit, a main control circuit, a switching control circuit and a DC metering circuit;

[0011] The AC / DC constant voltage circuit is electrically connected with the commercial power and the DC / DC constant voltage circuit respectively, and is configured to convert the commercial power into DC direct current and input to the DC / DC constant voltage circuit;

[0012] The DC / DC constant voltage circuit is electrically connected with the main control circuit, and is configured to provide stable direct current voltage to the main control circuit to realize power supply;

[0013] The switch control circuit is electrically connected with the LED driving power supply and the master control circuit, configured to receive the DC constant current from the LED driving power supply and output to the LED light source to realize power supply, which is controlled by the master control circuit to realize conduction or disconnection;

[0014] The DC metering circuit is arranged on the link between the switch control circuit and the LED light source, and is electrically connected with the master control circuit, configured to collect the voltage and current of the DC constant current output by the LED driving power supply, and upload the collected data to the master control circuit, to realize real-time monitoring of the abnormal situation of overvoltage or overcurrent of the LED light source.

[0015] Further preferably, the single lamp controller further comprises a 0-10V / PWM output circuit, which is electrically connected with the master control circuit and the single lamp controller, configured to output dimming signal to the LED driving power supply under the control of the master control circuit, to realize brightness adjustment of the LED light source.

[0016] Further preferably, the control circuit is further configured to compare the value collected by the DC metering circuit with the output value of the 0-10V / PWM output circuit, and when the two values do not match, the switch control circuit is disconnected.

[0017] Further preferably, the single lamp controller further comprises an AC voltage sampling circuit, which is electrically connected with the mains and the master control circuit, configured to collect the voltage value of the mains and upload it to the master control circuit.

[0018] Further preferably, the single lamp controller further comprises a communication circuit, which is electrically connected with the master control circuit, configured to realize information transmission between the master control circuit and the upper platform, set the overcurrent threshold and the overvoltage threshold of the LED light source on the upper platform, and deliver them to the master control circuit through the communication circuit; when the DC metering circuit detects abnormal situation of overvoltage or overcurrent of the LED light source, the master module reports the fault information to the upper platform through the communication circuit.

[0019] Further preferably, the single lamp controller further comprises an RTC unit and an EEPROM unit;

[0020] The RTC unit is electrically connected with the master control circuit, configured to calculate the current time and realize timing function;

[0021] The EEPROM unit is electrically connected with the master control circuit, configured to store local data.

[0022] Further preferably, the single lamp controller further comprises an illuminance sensor, an inclination detection sensor and a human body sensing sensor, which are electrically connected with the master control circuit in sequence;

[0023] The illumination sensor and the main control circuit cooperate with each other and are configured to automatically adjust the brightness of the lamp according to the external ambient illumination;

[0024] The inclination detection sensor and the main control circuit cooperate with each other and are configured to detect the inclination angle of the lamp in real time.

[0025] The human body sensing sensor and the main control circuit cooperate with each other and are configured to sense the external human body, turn on the lamp when the human body is sensed, and turn off the lamp otherwise.

[0026] The utility model discloses a kind of LED light sources, including DC metering circuit, 0-10V / PWM output circuit, switch control circuit, RTC unit, EEPROM unit, inclination detection sensor, human body sensing sensor and main control circuit.

[0027] The utility model discloses a DC metering circuit is set, the voltage, current of entering LED light source is monitored in real time, prevents LED light source from damaging due to overvoltage or overcurrent.Meanwhile, the overvoltage, overcurrent preset threshold value of LED light source can be set on the upper platform, when DC metering circuit detects that LED light source overvoltage or overcurrent, switch control circuit is disconnected, and then LED light source can be protected, and fault information can be reported to the upper platform through communication circuit, for the repair of equipment.

[0028] In addition, the DC metering circuit also calculates the current power of LED light source by collecting voltage and current, and calculates the current and power of the input end of commercial power by combining the voltage value of commercial power, the power factor and efficiency of LED driving power supply, without calculating the current of the input end of commercial power by the way of current transformer or sampling resistor.

[0029] The output value of 0-10V / PWM output circuit is compared with the value detected by DC metering circuit, and the switch control circuit is cut off when the values are different, to avoid the problem that the constant current output of LED driving power supply is not controlled by 0-10V / PWM output circuit, leading to uncontrolled constant brightness of LED light source.

[0030] The switch control circuit is set instead of relay, to avoid the problem that the capacity of relay is small, and the system fails due to sticking in the switching process.

[0031] RTC unit, EEPROM unit, illumination sensor, inclination detection sensor and human body sensing sensor are set, to realize local timing, local storage, adjusting light brightness according to external light, detecting the inclination degree of lamp, and detecting whether someone passes by, and turning off when no one passes by, to achieve energy-saving effect. BRIEF DESCRIPTION OF DRAWINGS

[0032] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments with reference made to the accompanying drawings. The drawings are for purposes of illustration only and are not considered a limitation of the present application.

[0033] Figure 1 A structural block diagram of a single lamp control system for a lamp according to the present application;

[0034] Figure 2 An internal structural block diagram of a single lamp controller according to the present application. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, specific implementation manners of the present application will be described below with reference to the drawings. Obviously, the drawings in the following description only represent some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained from these drawings without any creative effort, and other embodiments can also be obtained.

[0036] In order to make the drawings simple, only parts related to the present application are schematically shown in the drawings, which do not represent the actual structure of the product. In addition, in order to make the drawings simple and easy to understand, parts having the same structure or function are only schematically shown in some drawings, or only one of them is marked. In this document, "one" not only means "only one", but also means "more than one".

[0037] The single lamp control system for a lamp according to the present application will be described in further detail below in combination with the drawings and specific embodiments. The advantages and features of the present application will be more apparent according to the following description and claims.

[0038] Referring to Figure 1 and Figure 2 , the present embodiment provides a single lamp control system for a lamp, which mainly comprises: an LED driving power supply, a single lamp controller and an LED light source. As shown in Figure 1 , the port on one side of the LED driving power supply is connected with the commercial power, and the four ports on the other side are all connected with one side of the single lamp controller. The links formed by the above four ports are respectively named as LED1+, LED1-, DIM+ and DIM-, which can convert the received commercial power into DC constant current and then input to the single lamp controller. The other side of the single lamp controller is provided with two ports connected with the LED light source, and the links formed by the above two ports are respectively named as LED2+ and LED2-, which can control the working state of the LED light source, including opening, closing, brightness and the like. Of course, the single lamp controller itself also needs power support, therefore, the single lamp controller is also connected with the commercial power input end.

[0039] Next, referring to Figure 2 , further to the core of the embodiment, namely the internal of the single lamp controller: specifically, the single lamp controller internally includes AC / DC constant voltage circuit, DC / DC constant voltage circuit, main control circuit, switch control circuit, DC metering circuit, 0-10V / PWM output circuit, AC voltage sampling circuit, communication circuit, RTC unit, EEPROM unit, illumination sensor, tilt detection sensor and human body induction sensor.

[0040] With Figure 2 reference to the left upper corner of which is the entry of the mains, after the mains input through the AC / DC constant voltage circuit to convert the mains into DC, the DC output by the AC / DC constant voltage circuit is input to one end of the DC / DC constant voltage circuit, the other end of the DC / DC constant voltage circuit is connected with the main control circuit, the DC / DC constant voltage circuit provides stable DC voltage to the main control circuit to realize power supply, and the main control circuit provides power support for each circuit, unit or sensor electrically connected thereto.

[0041] Next, the switch control circuit is electrically connected with the LED drive power supply and the main control circuit respectively, for receiving the DC constant current output by the LED drive power supply through the link LED1+ and LED1-, and then outputting the DC constant current to the LED light source to realize power supply. The switch control circuit is controlled by the main control circuit, and the main control circuit issues an instruction to switch the link LED1+ to realize the function of forced turning on or off the light. By setting the switch control circuit instead of the relay, the problem of small capacity of the relay and sticking of the switching process leading to system failure is avoided.

[0042] The DC metering circuit is arranged on the link between the switch control circuit and the LED light source, and the DC metering circuit is electrically connected with the LED light source through the link LED2+ and LED2-, and is electrically connected with the main control circuit, which can collect the voltage and current of the DC constant current output by the LED drive power supply, that is, detect the voltage and current applied to the LED light source.

[0043] Then, the communication circuit is electrically connected with the main control circuit, for realizing information transmission between the main control circuit and the upper platform. The user can set the overcurrent threshold and the overvoltage threshold of the LED light source on the upper platform, and deliver the thresholds to the main control circuit through the communication circuit to complete the threshold setting. When the DC metering circuit uploads the monitored data to the main control circuit, the main control circuit judges that the LED light source has abnormal conditions of overvoltage or overcurrent, the main control module controls the switch control circuit to be disconnected to protect the LED light source, and then reports the fault information to the upper platform through the communication circuit for maintenance of the equipment.

[0044] The AC voltage sampling circuit is arranged between the main control circuit and the mains input end, and is used to collect the voltage value of the mains and upload the collected data to the main control circuit.

[0045] Referring to Figure 2 In the embodiment, the DC metering circuit is arranged to collect the voltage and current across the link LED1+ and LED1-. When the light is turned on, the main control circuit controls the large-power MOS tube of the switch control circuit to be turned on, and the electrical signal output by the LED driving power supply is output to the LED light source through the link LED1+ and LED1- and the DC metering circuit. According to the voltage and current of the link LED1+ and LED1- collected by the DC metering circuit, the output power of the LED light source is calculated. According to the output power of the LED light source and the mains voltage value collected by the AC voltage sampling circuit, the current and power of the mains input end can be calculated according to the PF and efficiency of the LED driving power supply, without the need to calculate the current of the mains input end by means of a current transformer or a sampling resistor. The problem of system failure caused by small capacity of the current transformer and overcurrent burning is avoided.

[0046] Preferably, the 0-10V / PWM output circuit is electrically connected to the main control circuit and the single lamp controller, and is controlled by the main control circuit to output a dimming signal to the LED driving power supply, so as to realize the brightness adjustment of the LED light source. When dimming is performed, the main control circuit outputs a dimming signal to the LED driving power supply through the 0-10V / PWM output circuit and the link DIM+ and DIM-, so as to realize the brightness adjustment of the LED light source. Further preferably, when the constant current output of the LED driving power supply is not controlled by the 0-10V / PWM output circuit, i.e., when the DC metering circuit detects that the value is inconsistent with the output value of the 0-10V / PWM output circuit, the main control circuit controls the switch control circuit to be turned off, so as to avoid the problem that the constant current output of the LED driving power supply is not controlled by the 0-10V / PWM output circuit, resulting in that the LED light source is always bright and uncontrollable.

[0047] Finally, in the embodiment, the RTC unit is electrically connected with the master control circuit, used for calculating the current time, realizing the functions of timing on and off and dimming, and when the communication circuit is abnormal and cannot communicate, the master control circuit can also realize the local functions of local on and off and dimming through the time of the local RTC unit. The EEPROM unit is electrically connected with the master control circuit, used for storing local data without loss in power failure. The illumination sensor is electrically connected with the master control circuit and cooperates with the master control circuit, so that the luminaire can automatically adjust the brightness according to the external ambient illumination. The human body sensing sensor is electrically connected with the master control circuit and cooperates with the master control circuit, so that the function of light on when people come and light off when people go can be realized, achieving the purpose of energy saving. The inclination detection sensor is electrically connected with the master control circuit and cooperates with the master control circuit, so that the inclination angle of the luminaire can be detected, thereby sending the warning of the inclination of the lamp pole to the upper platform.

[0048] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments. Even if various changes are made to the utility model, provided that the changes belong to the scope of the utility model claims and equivalent technologies, they still fall within the protection scope of the utility model.

Claims

1. A single lamp control system for a luminaire, characterized by, The application relates to an LED driving power supply, a single lamp controller and an LED light source. The LED driving power supply is electrically connected with commercial power and the single lamp controller, and is configured to convert commercial power into DC constant current and input the DC constant current into the single lamp controller. The single lamp controller is further electrically connected with commercial power and the LED light source, and is configured to control the working state of the LED light source. The single lamp controller internally comprises an AC / DC constant voltage circuit, a DC / DC constant voltage circuit, a main control circuit, a switch control circuit and a DC metering circuit. The AC / DC constant voltage circuit is electrically connected with commercial power and the DC / DC constant voltage circuit, and is configured to convert commercial power into DC direct current and input the DC direct current into the DC / DC constant voltage circuit. The DC / DC constant voltage circuit is electrically connected with the main control circuit, and is configured to provide stable direct current voltage to the main control circuit to realize power supply. The switch control circuit is electrically connected with the LED driving power supply and the main control circuit, and is configured to receive DC constant current from the LED driving power supply, output the DC constant current to the LED light source to realize power supply, and be controlled by the main control circuit to realize conduction or disconnection. The DC metering circuit is arranged on a link between the switch control circuit and the LED light source, and is electrically connected with the main control circuit, and is configured to collect the voltage and current of the DC constant current output by the LED driving power supply, upload the collected data to the main control circuit, and realize real-time monitoring of abnormal conditions such as overvoltage and overcurrent of the LED light source. The single lamp controller further comprises a 0-10V / PWM output circuit, which is electrically connected with the main control circuit and the single lamp controller, and is configured to output a dimming signal to the LED driving power supply under the control of the main control circuit, so as to realize brightness adjustment of the LED light source.

2. The single lamp control system for a light fixture of claim 1, wherein, The control circuit is further configured to compare the value collected by the DC metering circuit with the output value of the 0-10V / PWM output circuit, and make the switch control circuit disconnected when the two values are inconsistent.

3. The single lamp control system for a light fixture of claim 2, wherein, The single lamp controller further comprises an AC voltage sampling circuit, which is electrically connected with commercial power and the main control circuit, and is configured to collect the voltage value of commercial power and upload the voltage value to the main control circuit.

4. The single lamp control system for a light fixture of claim 1, wherein, The single lamp controller further comprises a communication circuit, which is electrically connected with the main control circuit, and is configured to realize information transmission between the main control circuit and an upper platform, set the overcurrent threshold and the overvoltage threshold of the LED light source on the upper platform, and deliver the overcurrent threshold and the overvoltage threshold to the main control circuit through the communication circuit; when the DC metering circuit monitors abnormal conditions such as overvoltage and overcurrent of the LED light source, the main control circuit reports fault information to the upper platform through the communication circuit.

5. The single lamp control system for a light fixture of claim 1, wherein, The single lamp controller further comprises an RTC unit and an EEPROM unit.

6. The single lamp control system for a light fixture of claim 1, wherein, The RTC unit is electrically connected with the main control circuit, and is configured to calculate the current time and realize a timing function. ​ The EEPROM unit is electrically connected with the master control circuit and is configured to store local data.

7. The single lamp control system for a light fixture of claim 1, wherein, The single lamp controller is further provided with a light intensity sensor, a tilt detection sensor and a human body sensing sensor which are sequentially electrically connected with the master control circuit. The light intensity sensor cooperates with the master control circuit and is configured to automatically adjust the brightness of the lamp according to the external ambient light intensity. The tilt detection sensor cooperates with the master control circuit and is configured to detect the tilt angle of the lamp in real time. The human body sensing sensor cooperates with the master control circuit and is configured to sense the external human body, and turn on the lamp when the human body is sensed, and vice versa.

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