阅读说明：本技术 智能型假负载电量消耗系统 (Intelligent dummy load electricity consumption system ) 是由 杨世学 于 2019-12-23 设计创作，主要内容包括：本发明提供一种智能型假负载电量消耗系统,包括一开关侦测模块、以及一放电模块。该开关侦测模块包括一电源输入模块、以及一设置于该电源输入模块输出的滤波电路,该滤波电路是对一工作单元提供电源,该电源输入模块的输出挂载有一第一控制器,该滤波电路的输出则挂载有一第二控制器。该放电模块包括有一连接至该工作单元的开关单元、以及一控制该开关单元启闭的逻辑闸,该逻辑闸的输入端连接至该第一控制器及该第二控制器的输出端以输出一启闭该开关单元的控制讯号。(The invention provides an intelligent dummy load electricity consumption system, which comprises a switch detection module and a discharge module. The switch detection module comprises a power input module and a filter circuit arranged at the output of the power input module, the filter circuit provides power for a working unit, the output of the power input module is hung with a first controller, and the output of the filter circuit is hung with a second controller. The discharging module comprises a switch unit connected to the working unit and a logic gate for controlling the switch unit to be opened and closed, wherein the input end of the logic gate is connected to the output ends of the first controller and the second controller so as to output a control signal for opening and closing the switch unit.)

1. An intelligent dummy load power consumption system, comprising:

the switch detection module comprises a power input module and a filter circuit arranged at the output of the power input module, wherein the filter circuit provides power for a working unit, the output of the power input module is hung with a first controller, and the output of the filter circuit is hung with a second controller; and

and the discharging module comprises a switch unit connected to the working unit and a logic gate for controlling the switch unit to be opened and closed, wherein the input end of the logic gate is connected to the output ends of the first controller and the second controller so as to output a control signal for opening and closing the switch unit.

2. The intelligent dummy load power consumption system of claim 1, wherein a counter is connected between the first controller and the logic gate, and a reset input of the counter is connected to the first controller for triggering counting or resetting to switch the output of high level voltage or low level voltage according to the output and frequency input of the first controller.

3. The intelligent dummy load power consumption system of claim 2, wherein the counter toggles the output voltage level when binary summed to a set value.

4. The intelligent dummy load power consumption system of claim 2, wherein a schmitt trigger is hooked between the first controller and the counter.

5. The intelligent dummy load power consumption system of any of claims 1 to 4, wherein the second controller comprises a Schmitt trigger.

6. The intelligent dummy load power consumption system of claim 5, wherein an inverter is connected between the counter and the logic gate.

7. The intelligent dummy load power consumption system of claim 6, wherein the logic Gate is an AND Gate (AND Gate).

8. The intelligent dummy load power consumption system of claim 7, wherein the filter circuit is an inductor-capacitor series circuit.

9. The intelligent dummy load power consumption system of claim 7, wherein the switch detection module comprises a rectifying circuit disposed between the power input module and the filtering circuit.

10. The intelligent dummy load power consumption system of claim 1, wherein the operating unit is a light emitting diode module.

Technical Field

The present invention relates to a control circuit, and more particularly, to an intelligent dummy load power consumption system for discharging a filter capacitor at a high rate.

Background

A Light-emitting diode (LED) is a semiconductor electronic component capable of emitting Light, and is a composite Light source composed of trivalent and pentavalent elements. Such electronic components appeared as early as 1962, and only emitted red light with low brightness in the early stage, which was used as an indicator light after being patented by hewlett packard, and other versions of monochromatic light were developed gradually, so that the emitted light is distributed over visible light, infrared light and ultraviolet light, and the brightness is also improved to a relatively high degree. With the advent of white light emitting diodes, recent developments have been progressing to widespread use as lighting applications.

The LED driving circuit is an important part of driving the LED, and the circuit is more operable than the conventional light source due to the instantaneous interruption of the LED. Most LEDs on the market are driven by a dc power supply, and therefore, most LED driving power supplies are also used as a switching dc voltage source. At present, most of LED driving power supplies are single-pole isolated power factor correction converters, and the driving circuit has the advantages of high efficiency, high power factor, small harmonic wave, low cost and the like.

Because its output low frequency ripple is big, in order to solve the big problem of ripple, the technique commonly used carries out the filtering for adding a very large capacity electric capacity at the output, falls the ripple very little, but can save a lot of energy on the filter capacitor after the outage, makes LED drive power supply's output voltage fall slowly, still lasts bright a period after the switch that leads to the LED lamp breaks off, afterglow phenomenon promptly for the LED lamp can't reach the effect of transient interruption when closing the power.

Disclosure of Invention

The invention aims to provide an intelligent dummy load electricity consumption system, which comprises a switch detection module and a discharge module. The switch detection module comprises a power input module and a filter circuit arranged at the output of the power input module, the filter circuit provides power for a working unit, the output of the power input module is hung with a first controller, and the output of the filter circuit is hung with a second controller. The discharging module comprises a switch unit connected to the working unit and a logic gate for controlling the switch unit to be opened and closed, wherein the input end of the logic gate is connected to the output ends of the first controller and the second controller so as to output a control signal for opening and closing the switch unit.

Furthermore, a counter is hung between the first controller and the logic gate, and the reset input of the counter is connected to the first controller so as to trigger counting or reset counting according to the output and the frequency input of the first controller to switch high-level voltage or low-level voltage output.

Further, the counter will switch the output voltage level when binary summed to the set value.

Further, a Schmitt trigger is hung between the first controller and the counter.

Further, the second controller includes a schmitt trigger.

Furthermore, an inverter is mounted between the counter and the logic gate.

Further, the logic Gate is an AND Gate (AND Gate).

Furthermore, the filter circuit is an inductance-capacitance serial circuit.

Furthermore, the switch detection module comprises a rectification circuit arranged between the power input module and the filter circuit.

Further, the working unit is a light emitting diode module.

Therefore, compared with the prior art, the invention has the following advantages and effects:

1. the invention can rapidly switch the load loop to the ground end, thereby effectively improving the afterglow phenomenon.

2. The invention is different from the resistance of other dummy loads, and the energy of the capacitor can be discharged and output linearly through the design of the constant-current dummy load, so that the discharge time is reduced.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of an intelligent dummy load power consumption system according to the present invention;

fig. 2 is a schematic circuit diagram of the intelligent dummy load power consumption system according to the present invention.

Description of reference numerals:

100 intelligent dummy load electricity consumption system

10 switch detection module

11 power supply input module

12 filter circuit

121 inductance

122 capacitance

13 first controller

131 operational amplifier

132 Schmitt trigger

14 second controller

15 counter

151 reset input

152 frequency input

16 reverser

17 rectification circuit

20 discharge module

21 switching unit

22 logic gate

W work unit

L load resistance

Detailed Description

The detailed description and technical contents of the present invention will be described below with reference to the accompanying drawings. Furthermore, for convenience of illustration, the drawings are not necessarily to scale, and the drawings and their proportions are not intended to limit the scope of the invention.

The intelligent dummy load electricity consumption system can be used in any circuit to achieve the effect of quick discharge, and in a better feasible embodiment of the invention, the intelligent dummy load electricity consumption system can be used in a driving circuit of a light-emitting diode to quickly release the energy of a capacitor when a power supply is turned off so as to achieve the effect of improving afterglow by instantaneous interruption.

Referring to fig. 1 and 2, a block diagram and a circuit diagram of an intelligent dummy load power consumption system according to the present invention are shown in the following embodiments for describing the technical content of the present invention in detail, as shown in the drawings:

the present embodiment provides an intelligent dummy load power consumption system 100, which includes a switch detection module 10 and a discharge module 20 connected to the switch detection module 10.

The switch detection module 10 includes a power input module 11 and a filter circuit 12 disposed at an output of the power input module 11. The power input module 11 may be a primary-secondary side coil pair, or other such power supply modules, which are not limited in the present invention. The output terminal of the power input module 11 is connected to a first controller 13, and the output of the filter circuit 12 is connected to a second controller 14. In a preferred embodiment, the filter circuit 12 may be an inductor-capacitor serial circuit, and the working unit W and the load resistor L are mounted at the rear end of the inductor-capacitor serial circuit. The inductor-capacitor serial circuit comprises an inductor 121 and a capacitor 122 which are connected in series, and the effects of voltage stabilization and current stabilization are achieved through the inductor-capacitor serial circuit. The working unit W is connected in parallel to the capacitor 122, and in a preferred embodiment, the working unit W is a light emitting diode module, which is not limited in the present invention; the load resistor P is connected in series to the working unit W to control the input current of the working unit W. The switch detection module 10 includes a rectification circuit 17 disposed between the inductor-capacitor serial circuit and the power input module 11 and between the power input module 11 and the filter circuit 12 for performing ac-dc conversion to input a dc power.

The discharging module 20 includes a switch unit 21 connected to the working unit W in parallel, and a logic gate 22 for controlling the switch unit 21 to open and close. Wherein the input terminal of the logic gate 22 is connected to the output terminals of the first controller 13 and the second controller 14 to output a control signal for turning on/off the switch unit 21. In the present embodiment, the logic Gate 22 is an AND Gate (AND Gate), AND the type of the logic Gate 22 (e.g., an OR Gate (OR Gate), an NAND Gate (NAND Gate), a NOR Gate (NOR Gate), etc.) may be changed by modifying the circuit design (e.g., increasing the number of logic gates, the inverter, modifying the trigger condition of the counter, etc.) according to the actual requirement, which is not intended to limit the scope of the present invention.

A counter 15 is mounted between the first controller 13 and the logic gate 22, the counter 15 includes a reset input 151 and a frequency input 152, when the signal of the reset input 151 is at a low level, the counter is triggered to count according to the frequency signal of the frequency input 152, and when the signal reaches a set value, the counter 15 is reset when the signal of the reset input 151 is at a high level. In a preferred embodiment, the counter 15 modulates the output from high to low when binary is added to the set value. An inverter 16 is mounted between the counter 15 and the logic gate 22, and the configuration of the logic gate 22 for logic control can be changed according to the design requirement and the type of the logic gate 22. The counter 15 avoids noise generated by non-linear time variation at the input of the square wave.

In a preferred embodiment, the first controller 13 includes an operational amplifier 131 (OPA) and a Schmitt trigger 132(Schmitt trigger), the operational amplifier 131 is configured to filter out negative half-waves of the ac square wave voltage input by the power input module 11, the Schmitt trigger 132 is disposed at a rear end of the operational amplifier 131, and the second controller 14 includes a Schmitt trigger configured to reduce high-frequency noise and improve stability, thereby ensuring that the output value signal is switched between a high level and a low level.

The circuit structure is described in detail above, and the actual operation and control logic combination of the circuit will be described in more detail later.

When the power input module 11 is over-current (the power switch is turned on), the first controller 13 compares the voltage of the power input module 11 with the default voltage level, and when the power input module 11 is in the startup state, the voltage of the power input module 11 is greater than the default voltage level, so the first controller 13 outputs a high-level voltage, and the output high-level voltage is oscillated to the high level through the schmitt trigger 132 and is output to the counter 15.

When the counter 15 receives the high level output, the counter 15 is continuously reset, so that the output of the counter 15 is kept at the high level (value 1), and the value 0 is output through the output of the inverter 16; in parallel with the above circuits, the second controller 14 charges the inductor 121 AND the capacitor 122 by feeding current into the filter circuit 12 to reach a high level voltage, outputs a value 1, outputs a value 0 AND a value 1 as a value 0 through an AND Gate (AND Gate), AND feeds an input voltage into the working unit W (light emitting diode module).

At the moment when the circuit switch is turned off, the first controller 13 compares the voltage of the power input module 11 with a default voltage level, and in the off state, the voltage of the power input module 11 is smaller than the default voltage level, so that the first controller 13 outputs a low level voltage, and the output low level voltage is oscillated to a low level through the schmitt trigger and is output to the counter 15.

At this time, since the reset pin of the counter 15 is changed from the high level to the low level, the counter 15 will continuously superimpose the value until the value reaches the output value superimposed according to the frequency, when the value reaches the set value, the output of the counter 15 will be converted from the high level (value 1) to the low level (value 0), and then the value 1 will be output through the output of the inverter 16. The process is performed simultaneously with the above circuit, since the energy of the capacitor 122 is not released yet, at this time, the output of the second controller 14 is still the high-level voltage, the output value 1 is output, at this time, the value 1 is output under the condition that the input is the value 1 through the AND Gate (AND Gate), the switch is in the on state, the energy of the capacitor is guided to the ground by opening the switch, so that the energy of the capacitor can be released to the low level (AND the low level of the second controller 14) AND the working unit W (light emitting diode module) is switched off instantly.

In conclusion, the load loop can be rapidly switched to the ground end, and the afterglow phenomenon is effectively improved. In addition, the invention is different from the resistance of other dummy loads, and the energy of the capacitor can be discharged and output linearly through the design of the constant-current dummy load, so that the discharge time is reduced.

Although the present invention has been described in detail, it should be understood that the above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the invention, i.e., the appended claims are intended to cover all such modifications and changes as fall within the true spirit and scope of the invention.