CN204836653U

CN204836653U - LED drive power supply with extended functionality

Info

Publication number: CN204836653U
Application number: CN201520391068.7U
Authority: CN
Inventors: 叶家星; 王双喜; 张丹
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-06-08
Filing date: 2015-06-08
Publication date: 2015-12-02
Anticipated expiration: 2025-06-08

Abstract

The utility model relates to a LED drive power supply with extended functionality is refered in particular to in the power technology field. It includes main circuit module, voltage sample module, current sample module, drive module, ARM chip module, extended functionality module, its characterized in that ARM chip module is used for handling sampled signal, drive signal, extension module signal, the voltage sample module is used for realizing the self -control with the signal of telecommunication of current sample module collection, extended functionality module lug connection realizes different extended functionality to ARM chip module through programming, the utility model discloses use general switch circuit to operate the completion by ARM chip module as main circuit, circuit design cycle weak point, extended functionality, extended functionality hardware is with low costs.

Description

A kind of LED drive power with expanded function

Technical field

The utility model belongs to power technique fields, refers in particular to a kind of LED drive power with expanded function, expands for driving LED and practical function.

Background technology

In recent years under people's energy-saving and emission-reduction consciousness improves constantly and promotes energetically with national policy, LED lamp replaces traditional light fixture gradually.The requirement of people to light fixture is also not limited to lighting light fixture, and the function of more intellectualities, hommization is added in light fixture, this to LED drive power have can be higher requirement.Present stage LED lamp for illumination driving power mainly using integrated circuit (IC) chip as driving chip, scalability is poor, when doing Function Extension to LED drive power, need add independently functional module, this makes the cost of driving power greatly improve.

Utility model content

For the problems referred to above, the purpose of this utility model is to provide a kind of LED drive power with expanded function, by adding the expansion of the method practical function of components and parts and programming.

For achieving the above object, the utility model adopts following technical scheme: a kind of LED drive power with expanded function, comprise main circuit module, voltage sample module, current sample module, driver module, ARM chip module, extended function module, it is characterized in that described ARM chip module is for the treatment of sampled signal, drive singal, expansion module signal; Described main circuit module uses general switching circuit main circuit; The signal of telecommunication of described voltage sample module and current sample module acquires is used for teaching display stand and regulates; Described driver module is for driving the switching tube in main circuit; Described extended function module is directly connected to ARM chip module, by the expanded function that programming realization is different.

In technique scheme, the described operation principle with the LED drive power of expanded function is: by driving power incoming transport civil power, electric main can be transformed into voltage needed for LED by switching circuit, voltage acquisition module is for gathering the voltage signal in main circuit, and voltage signal is transformed into the voltage range that ARM chip can detect, current acquisition module is for gathering the current signal in main circuit, current signal is transformed into corresponding voltage signal, pass to ARM chip again, ARM chip is delivered to driver module controlled quentity controlled variable after carrying out computing to the voltage signal gathered and current signal, the switching tube that driver module directly controls in main circuit carrys out stabilizing output current.When needing to add expanded function, only need add corresponding signal transmission device can realize, and the computing of expanded function is completed by ARM chip.

Compared with prior art, the utility model uses ARM chip as the control chip of power supply, himself there is the function that analog quantity and digital quantity are changed mutually, possesses PWM fan-out capability simultaneously, the collection of analog quantity and the output of drive singal can be realized simultaneously, operational capability is strong, and peripheral circuit is simple.

Accompanying drawing explanation

Fig. 1 is a kind of LED drive power system composition structure chart with expanded function of the utility model;

Fig. 2 is that a kind of LED drive power front stage circuits PCB with expanded function of the utility model schemes;

Fig. 3 is that a kind of LED drive power late-class circuit PCB with expanded function of the utility model schemes;

In the accompanying drawings, 1-main circuit module, 2-voltage sample module, 3-driver module, 4-current sample module voltage source, 5-ARM chip module, 6-extended function module

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.

As shown in Figure 1, a kind of LED drive power system composition structure chart with expanded function disclosed in the utility model, wherein main circuit module uses two-stage switching circuit as main circuit, and use rated voltage is 30V, and rated current is that the LED lamp of 3.3A is as load.

As shown in Figure 2, disclosed in the utility model, a kind of LED drive power front stage circuits PCB with expanded function schemes, wherein front stage circuits uses Boost circuit of power factor correction, the rated value of output voltage is 400V, after electric main passes into front stage circuits, carry out rectification, sampled by voltage sample module 2 pairs of input voltages again, voltage sample value directly enters ARM chip module 5, current signal is sampled by current sample module 4, sampled value equally directly enters ARM chip module 5, sampled value exports revised pwm signal carry out power factor correction computing in ARM chip module 5 after, pwm signal enters driver module 3, driver module 3 produces the drive singal of switching tube, stable output and the power factor emendation function of 400V can be realized by front stage circuits.

As shown in Figure 3, disclosed in the utility model, a kind of LED drive power late-class circuit PCB with expanded function schemes, wherein late-class circuit uses LLC resonant circuit, realize the constant current output of 3.3A, the 400V voltage signal that prime produces is by being transformed into the voltage signal of 30V after LLC resonant circuit, wherein output voltage is sampled by voltage sample module 2, output current is sampled by current sample module 4, magnitude of voltage after sampling and current value directly pass into ARM chip module 5, ARM chip module 5 pairs of input voltage values do pressure limiting computing, when preventing zero load, voltage is excessive, constant current computing is done to input current, for the constant current output of 3.3A, value after computing exports the pwm signal of one group of complementation by ARM chip module 5, pwm signal enters driver module 3, driver module 3 produces the drive singal of switching tube.

Disclosed in the utility model a kind of have in the LED drive power of expanded function add stepless dimming and automatic temperature-controlled heat radiation two expanded functions, stepless dimming can be realized by the external adjustable resistance of ARM chip module 5, utilize the analog conversion function in ARM chip module 5 can detect the real-time partial pressure value of adjustable resistance, by pwm signal frequency and the adjustable output voltage of the size adjustment complementation of partial pressure value, reach the object of light modulation.Automatic temperature-controlled heat sinking function can be realized by the external thermistor of ARM chip module 5, and thermistor can convert the signal of telecommunication to temperature signal, and ARM chip module 5 judges whether to start active heat sink by the value detecting the signal of telecommunication.

Above-mentioned example is only one of enforcement of the present utility model; the utility model is not limited to above-mentioned specific embodiment; those skilled in the art also can make multiple amendment and application on the basis of existing technology; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields; do not departing under spirit of the present utility model, all in the claimed scope of the utility model.

Claims

1. one kind has the LED drive power of expanded function, comprise main circuit module, voltage sample module, current sample module, driver module, ARM chip module, extended function module, it is characterized in that described ARM chip module is for the treatment of sampled signal, drive singal, expansion module signal.

2. a kind of LED drive power with expanded function according to claim 1, is characterized in that, described main circuit module uses general switching circuit main circuit.

3. a kind of LED drive power with expanded function according to claim 1, is characterized in that, the signal of telecommunication of described voltage sample module and current sample module acquires is used for teaching display stand and regulates.

4. a kind of LED drive power with expanded function according to claim 1, is characterized in that, described driver module is for driving the switching tube in main circuit.

5. a kind of LED drive power with expanded function according to claim 1, it is characterized in that, described extended function module is directly connected to ARM chip module, by the expanded function that programming realization is different.