CN106163005B - An over-temperature protection LED drive power supply - Google Patents

Abstract

The invention provides an over-temperature protection L ED driving power supply which comprises a main body, a substrate, a control board and a display terminal, wherein an upper heat dissipation port is formed in the upper surface of the main body, a lower heat dissipation port is formed in the side surface of the main body, the substrate is arranged in the main body, a L ED driving power supply is arranged on the substrate, a temperature sensor is mounted on the L ED driving power supply, the substrate is also provided with a control board, a relay I, a battery, a relay II, an operation lamp, a fault lamp and a fan, the relay I is connected with a L ED driving power supply through an electric wire, the battery is connected with the operation lamp, the fault lamp and the fan through electric wires, and the relay II is arranged on the electric wire between the battery and the operation lamp or between the fault lamp or between the fan.

Description

An over-temperature protection LED drive power supply

technical field

The invention is an over-temperature protection LED driving power supply, which belongs to the field of LED driving equipment.

Background technique

The LED drive power supply is a power converter that converts the power supply into a specific voltage and current to drive the LED to emit light. Usually: the input of the LED drive power supply includes high-voltage power frequency AC (that is, mains), low-voltage DC, high-voltage DC, low-voltage high-voltage Frequency AC (such as the output of an electronic transformer), etc. The output of the LED drive power supply is mostly a constant current source that can change the voltage with the change of the LED forward voltage drop value.

Drive power can be divided into external power supply and built-in power supply according to the installation position.

(1) External power supply

As the name suggests, an external power supply is to install the power supply outside. Generally, if the voltage is relatively high and poses a safety hazard to people, an external power supply is required. The difference from the built-in power supply is that the power supply adds a shell, and the common ones are street lights.

(2) Built-in power supply

It is to install the power supply in the lamp, generally the voltage is relatively low, 12v to 24v, there is no safety hazard to people. This common one has bulb lights.

In the external power supply, according to the power consumption rules of the power grid and the characteristic requirements of the LED drive power supply, the influence of temperature on the LED drive power supply should be considered when selecting and designing the LED drive power supply, so sometimes it is necessary to design a device that can protect the LED drive power supply. device.

Contents of the invention

Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide an over-temperature protection LED drive power supply to solve the problems raised in the above-mentioned background technology. The present invention is easy to use, easy to operate, good in stability and high in reliability.

In order to achieve the above object, the present invention is achieved through the following technical solutions: an over-temperature protection LED drive power supply, including a main body, a substrate, a control board and a display terminal, the upper surface of the main body is provided with an upper heat dissipation port, the The side surface of the main body is provided with a lower cooling port, the inside of the main body is provided with a substrate, the substrate is provided with an LED drive power supply, and a temperature sensor is installed on the LED drive power supply; a control board, Relay 1, battery, relay 2, running light, fault light and fan, relay 1 is connected to the LED drive power supply through wires, and the battery is connected to running light, fault light and fan through wires, between the battery and the running light or fault light or fan The electric wire between is provided with relay two; A/D converter, single-chip microcomputer, memory, D/A converter, wireless information transmission unit and DC-DC power supply module are welded on the described control board, and described temperature sensor passes signal Connect with A/D converter; The output end of described temperature sensor is connected with the input end of A/D converter, and the output end of described A/D converter is connected with the input end of single-chip microcomputer, and the output end of described single-chip microcomputer is connected with The input end of the wireless information transmission unit is connected, the output end of the wireless information transmission unit is connected with the input end of the display terminal; the output end of the single-chip microcomputer is connected with the input end of the D/A converter, and the D/A converter The output end of the relay is connected to the input end of the relay two, the output end of the relay two is connected to the input end of the battery, and the output end of the battery is connected to the input end of the running light, the input end of the fault light and the input end of the fan.

Further, the relay one is connected to an external circuit through a wire, and the external circuit supplies power to the LED drive power supply through the wire, and the relay one is under the control of the single-chip microcomputer, and then controls the on-off of the current of the external circuit flowing through the LED drive power supply, thereby controlling the LED The working status of the drive power.

Further, at least one fan is provided, and the fan is installed above the LED drive power supply or below the running lamp and the fault lamp, and the fan generates wind to reduce the temperature of the LED drive power supply, the running lamp or the fault lamp, thereby generating The hot air flows to the outside of the main body through the upper or lower cooling vents.

Further, the A/D converter, single-chip microcomputer, memory, D/A converter and wireless information transmission unit welded on the control board are electrically connected to the DC-DC power module, and the DC-DC power module is used for A Power supply for /D converter, single chip microcomputer, memory, D/A converter and wireless information transmission unit.

Further, the wireless information transmission unit adopts CAN bus communication or ZigBee information transmission protocol, and the single-chip microcomputer is then connected to the display terminal for data through the wireless information transmission unit.

Further, the display terminal is an electronic device with a display screen.

Beneficial effects of the present invention: an over-temperature protection LED drive power supply of the present invention can effectively protect the safety of the LED drive power supply, selectively dissipate heat according to the temperature of the LED drive power supply, and automatically disconnect or connect the LED drive power supply according to the temperature It is electrically connected with the external circuit, and at the same time, the temperature information of the LED driving power supply can be sent to the display terminal, which is convenient for the staff to check. At the same time, the invention is convenient to use, easy to operate, good in stability and high in reliability.

Description of drawings

Other characteristics, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

Fig. 1 is a structural schematic diagram of an over-temperature protection LED driving power supply of the present invention;

2 is a schematic diagram of a substrate of an over-temperature protection LED drive power supply according to the present invention;

3 is a schematic diagram of a control panel of an over-temperature protection LED drive power supply according to the present invention;

Fig. 4 is a working principle block diagram of an over-temperature protection LED driving power supply of the present invention;

In the figure: 1-main body, 2-base plate, 3-control board, 4-display terminal, 11-upper cooling vent, 12-lower cooling vent, 21-LED drive power supply, 22-temperature sensor, 23-wire, 24- Relay 1, 25-battery, 26-relay 2, 27-running light, 28-fault light, 29-fan, 31-A/D converter, 32-single-chip microcomputer, 33-storage, 34-D/A converter , 35-wireless information transmission unit, 36-DC-DC power supply module.

Detailed ways

In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

Please refer to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the present invention provides a technical solution: an over-temperature protection LED drive power supply, including a main body 1, a substrate 2, a control board 3 and a display terminal 4, the upper part of the main body 1 The surface has an upper cooling port 11, the side surface of the main body 1 is provided with a lower cooling port 12, the inside of the main body 1 is provided with a substrate 2, the substrate 2 is provided with an LED driving power supply 21, and a temperature sensor 22 is installed on the LED driving power supply 21.

Substrate 2 is also provided with control panel 3, relay one 24, battery 25, relay two 26, running light 27, fault light 28 and fan 29, relay one 24 is connected with LED drive power supply 21 by electric wire 23, battery 25 is connected by electric wire 23 Running light 27, fault light 28 and fan 29 are provided with relay two 26 on the electric wire 23 between battery 25 and running light 27 or fault light 28 or fan 29.

An A/D converter 31, a single-chip microcomputer 32, a memory 33, a D/A converter 34, a wireless information transmission unit 35, and a DC-DC power supply module 36 are welded on the control board 3, and the temperature sensor 22 converts the signal through the A/D The output end of the temperature sensor 22 is connected with the input end of the A/D converter 31, the output end of the A/D converter 31 is connected with the input end of the single-chip microcomputer 32, and the output end of the single-chip microcomputer 32 is connected with the wireless information transmission unit 35 The input end of the wireless information transmission unit 35 is connected to the input end of the display terminal 4 .

The output end of single-chip microcomputer 32 is connected with the input end of D/A converter 34, and the output end of D/A converter 34 is connected with the input end of relay two 26, and the output end of relay two 26 is connected with the input end of battery 25, and battery The output end of 25 is connected with the input end of running light 27, the input end of fault light 28 and the input end of fan 29.

The relay one 24 is connected to the external circuit through the electric wire 23, and the external circuit supplies power to the LED driving power supply 21 through the electric wire 23, and the relay one 24 is under the control of the single-chip microcomputer 32, and then controls the on-off of the current flowing through the LED driving power supply 21 of the external circuit, thereby controlling the LED The working state of the drive power supply 21.

At least one fan 29 is provided, and the fan 29 is installed above the LED drive power supply 21 or below the running light 27 and the fault light 28. The fan 29 then reduces the temperature of the LED drive power supply 21 or the running light 27 or the fault light 28 by generating wind power, thereby generating The hot air flows to the outside of the main body 1 through the upper cooling vent 11 or the lower cooling vent 12 .

The A/D converter 31, single-chip microcomputer 32, storage 33, D/A converter 34 and wireless information transmission unit 35 welded on the control board 3 are electrically connected with the DC-DC power supply module 36, and the DC-DC power supply module 36 It is used for power supply when A/D converter 31 , single chip microcomputer 32 , storage 33 , D/A converter 34 and wireless information transmission unit 35 work.

The wireless information transmission unit 35 adopts CAN bus communication or ZigBee information transmission protocol, and the single-chip microcomputer 32 is connected with the display terminal 4 through the wireless information transmission unit 35. The display terminal 4 is an electronic device with a display screen.

As an embodiment of the present invention: before actual use, the staff can input a temperature critical value into the storage 33, and during actual use, the temperature sensor 22 can detect the temperature information of the LED drive power supply 21 and transmit it to In A/D converter 31, this temperature information is a kind of analog quantity, by A/D converter 31, this analog quantity is converted into digital quantity and added in the single-chip microcomputer 32, and single-chip microcomputer 32 is after further calculation and processing, by and The temperature critical value stored in the memory 33 is compared, if it is lower than this critical value, then the single-chip microcomputer 32 controls the relay two 26 through the D/A converter 34, and then controls the on-off of the battery 25 flowing through the running light 27 current, thereby The running lamp 27 is turned on. At this time, the staff can judge that the LED driving power supply 21 is in a normal state by the lighting situation of the running lamp 27 .

If the numerical value that temperature sensor 22 detects is higher than this critical value, then single-chip microcomputer 32 controls relay two 26 by D/A converter 34, then controls battery 25 to flow through the on-off of fault lamp 28 electric current, thereby fault lamp 28 is lighted At this time, the staff can judge that the LED drive power supply 21 is in an abnormal state through the lighting of the fault light 28, and the staff can perform corresponding operations at this time.

Simultaneously single-chip microcomputer 32 controls relay 2 26 by D/A converter 34, then controls battery 25 to flow through fan 29 current on-off, makes fan 29 work, and LED drive power supply 21 is radiated, can effectively protect the safety of LED drive power supply 21 .

The staff can input a peak critical value of the temperature into the memory 33. In actual use, if the value detected by the temperature sensor 22 is higher than the critical peak value, the single-chip microcomputer 32 controls the relay 1 through the D/A converter 34. 24, so that the control relay one 24 is disconnected, so that the LED drive power supply 21 is disconnected from the external circuit, so as to prevent the LED drive from being damaged due to excessive temperature.

The single-chip microcomputer 32 will transmit the temperature information to the display terminal 4 through the wireless information transmission unit 35, which is convenient for the staff to check.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or fundamentals of the present invention. The present invention can be implemented in other specific forms without any specific features. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (3)

1. a kind of overheat protector LED drive power, including main body, substrate, control panel and display terminal, it is characterised in that：Institute The upper surface for stating main body is provided with thermovent, and the side surface of the main body is provided with lower thermovent, the inside setting of the main body There is substrate, LED drive power is provided on the substrate, temperature sensor is installed in the LED drive power；

Control panel, relay one, battery, relay two, running indicator, trouble light and fan are additionally provided on the substrate, after Electric appliance one connects LED drive power by electric wire, and the battery connects running indicator, trouble light and fan by electric wire, in electricity Relay two is provided on electric wire between pond and running indicator or trouble light or fan；

Be welded on the control panel A/D converter, microcontroller, reservoir, D/A converter, wireless information transfer unit and DC-DC power module, the temperature sensor are connect by signal with A/D converter；

The output end of the temperature sensor and the input terminal of A/D converter connect, the output end and monolithic of the A/D converter The input terminal of machine connects, and the output end of the microcontroller is connect with the input terminal of wireless information transfer unit, the wireless messages The output end of transmission unit and the input terminal of display terminal connect；

The output end of the microcontroller and the input terminal of D/A converter connect, output end and the relay two of the D/A converter Input terminal connection, the input terminal of the output end of the relay two and battery connects, the output end and running indicator of the battery Input terminal, trouble light input terminal and fan input terminal connection；The relay one connects external circuit by electric wire, The external circuit is powered by electric wire to LED drive power, and relay one then controls external electrical under the control of microcontroller Road flows through the break-make of LED drive power electric current, to control the working condition of LED drive power；

The fan is mounted on above LED drive power or below running indicator and trouble light, and the fan is by generating wind-force Then LED drive power or running indicator or trouble light is made to reduce temperature, the hot wind of generation passes through upper thermovent or lower thermovent stream Move the outside of main body；

Be welded on A/D converter, microcontroller, reservoir, D/A converter and wireless information transfer unit on control panel with DC-DC power module is electrically connected, and the DC-DC power module is for A/D converter, microcontroller, reservoir, D/A converter And power supply when wireless information transfer cell operation；

Before actual use, staff can input in the critical value to reservoir of a temperature, when actual use, temperature The temperature information of degree sensor detection LED drive power is simultaneously transmitted in A/D converter, by A/D converter by temperature information It is transferred in microcontroller, after microcontroller is further calculated and handled, by being carried out with the temperature threshold value being stored in reservoir Comparison, if being less than this critical value, microcontroller controls relay two by D/A converter, then controls battery and flows through operation Lamp（27）The break-make of electric current, to make running indicator（27）It lights, staff can pass through running indicator at this time（27）Light situation Judge that LED drive power is under normal condition；If the numerical value that temperature sensor detects is higher than this critical value, monolithic Machine controls relay two by D/A converter, then controls battery and flows through trouble light（28）The break-make of electric current, to make trouble light （28）It lights, staff passes through trouble light at this time（28）The situation that lights judge that LED drive power is under abnormality； Microcontroller controls relay 2 26 by D/A converter simultaneously, then controls the break-make that battery flows through fan electrical current, makes fan work Make, radiates to LED drive power；

Staff inputs in the peak critical value to reservoir of a temperature, when actual use, if temperature sensor is examined The numerical value measured is higher than this peak critical value, then microcontroller controls relay one by D/A converter, to control relay One disconnects, and LED drive power is made to be disconnected with external circuit, prevents LED drivings from being damaged because temperature is excessively high.

2. a kind of overheat protector LED drive power according to claim 1, it is characterised in that：The wireless information transfer Unit using CAN bus communicate or ZigBee information transmission protocols, the microcontroller by wireless information transfer unit then with Display terminal data connection.

3. a kind of overheat protector LED drive power according to claim 1 or 2, it is characterised in that：The display terminal is A kind of electronic equipment with display screen.