CN208806992U - A kind of intelligent electric power - Google Patents
A kind of intelligent electric power Download PDFInfo
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- CN208806992U CN208806992U CN201820839462.6U CN201820839462U CN208806992U CN 208806992 U CN208806992 U CN 208806992U CN 201820839462 U CN201820839462 U CN 201820839462U CN 208806992 U CN208806992 U CN 208806992U
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Abstract
The utility model relates to a kind of intelligent electric power, the intelligent electric power includes constant current/constant voltage module；Dimming controlling module, the dimming controlling module are located at constant current/constant voltage module rear end and are connected electrically；Switching circuit, the switching circuit are controlled by dimming controlling module for being electrically connected constant current/constant voltage module and load；It further include the voltage sample module being set between constant current/constant voltage module and dimming controlling module；The supply voltage of the voltage sample module is provided by constant current/constant voltage module, voltage division signal obtained by the sampling resistor of dimming controlling module real-time detection voltage sample module；The working power of the dimming controlling module is provided by the supply voltage of voltage sample module.Compared with the existing technology, intelligent electric power provided by the utility model can effectively avoid output flicker problem, reduce system power dissipation.
Description
Technical field
The utility model relates to field of electronic device more particularly to a kind of intelligent electric powers.
Background technique
As lighting apparatus is more and more intelligent, the control and scene lighting requirement for light are higher and higher, in order to full
, there are more and more dimming power source products at present in the market in such demand of foot.
Generally, the power supply of the circuits such as reception, sampling, control output of dim signal both is from ACDC control chip power,
The designs such as the introducing of dimming control signal and the output of primary side power supply are so that the control mode of dimming power source also follows and becomes
Change, also therefore introduces some new problems.
For example operating current needed for the circuit of control section is higher, directly takes electricity from ACDC control chip, will lead to ACDC
Do not start, in order to ensure system worked well, often has to add additional circuit in order to take electricity from high-voltage end, but this leads
The setting of cause system complicates；TRAIC constant pressure dimming power source is dimmed at angle with the duty ratio of PWM control output in minimum
The problem of input voltage is too low, and chip does not start can be faced, if control signal connects system at this time, output is necessarily caused to be dodged
Bright problem, and for such dimming power source, when output short-circuit, primary-side-control chip is under short circuit protection mode, and
The metal-oxide-semiconductor of output control then works in linear zone, and power consumption can be very high, fails long lasting for will lead to metal-oxide-semiconductor in this way.
Utility model content
In view of the above problems, it can effectively avoid circuit is unstable from causing to export the purpose of this utility model is to provide a kind of
Excessively high intelligent electric power is lost when flashing and circuit abnormality.
To achieve the goals above, the technical solution adopted in the utility model are as follows: a kind of intelligent electric power, it is described intelligent
Power supply includes,
Constant current/constant voltage module；
Dimming controlling module, the dimming controlling module are located at constant current/constant voltage module rear end and are connected electrically；
Switching circuit, the switching circuit are controlled by brightness adjustment control for being electrically connected constant current/constant voltage module and load
Module；
It is characterized by:
It further include the voltage sample module being set between constant current/constant voltage module and dimming controlling module；
The supply voltage of the voltage sample module is provided by constant current/constant voltage module, dimming controlling module real-time detection electricity
Press voltage division signal obtained by the sampling resistor of sampling module；
The working power of the dimming controlling module is provided by the supply voltage of voltage sample module.
Preferably, the voltage sample module includes two concatenated resistance；
The detection port of dimming controlling module is connected between at least two series resistance, for detecting a wherein sampling
The got pressure drop of resistance according to information dimming controlling module energy decision circuitry status at this time, and then takes corresponding tune
Prosecutor formula.
Preferably, the constant current/constant voltage module is ACDC circuit, and the switching circuit includes metal-oxide-semiconductor or bipolar transistor
Pipe.
In order to avoid the Pressure-drop instability on sampling resistor, it is preferred that the sampling resistor both ends parallel filtering capacitor.
Preferably, the electric branch circuit that the working power end of the dimming controlling module is formed by voltage-stabiliser tube and triode with
The power voltage terminal of voltage sample module is connected；
The non-inverting input terminal of the voltage-stabiliser tube connects divider resistance branch, and output end connects voltage sample by current-limiting resistance
The power voltage terminal of module, cathode ground connection；
The output end of the base stage connection voltage-stabiliser tube of triode, collector connect the power voltage terminal of voltage sample module, hair
Emitter-base bandgap grading is connected with the working power end of dimming controlling module.
A kind of auxiliary monitoring method for intelligent electric power, the intelligent electric power use structure as described above,
It is characterized in that: the method includes,
Step S1, whether the supply voltage of dimming controlling module detection voltage sample module reaches stationary value；
Step S2, if so, thening follow the steps S3；Step S1 is executed if it is not, then jumping；
Step S3, dimming controlling module judges whether the supply voltage of voltage sample module is stable and is in setting range
It is interior, and execute respective operations.
Preferably, dimming controlling module judges whether the supply voltage of voltage sample module is stable and in setting in the S3
Determine in range, and execute respective operations, specifically:
If step A1, judging, the supply voltage of the voltage sample module is stable and is in setting range, executes
Step A3；
If step A2, judging, the supply voltage of the voltage sample module is unstable or is not in setting range,
It jumps and executes step S1；
Step A3, dimming controlling module enters normal mode of operation, control output, while starting load short circuit timer.
Preferably, the method also includes also executing operations described below after entering step A3,
Step B1, the supply voltage for continuing to monitor the voltage sample module, judges whether it is reduced to predetermined value；
Step B2, if so, thening follow the steps B3, if it is not, the A3 that then gos to step；
Step B3, dimming controlling module control switch circuit turns off, and closes output, while judging load short circuits timer
Whether current time is less than setting value, if so, thening follow the steps B4, executes step S1 if it is not, then jumping；
Step B4, starting short-circuit protection delay, then jumps and executes step S1.
Preferably, whether the supply voltage for judging voltage sample module reaches stationary value, specifically:
The detection port of dimming controlling module obtains voltage obtained by the sampling resistor of voltage sample module, according to voltage sample
Each resistance value ratio of module converts the gained voltage to obtain the current power voltage of voltage sample module, and will
Current power voltage is compared with stationary value.
Compared with the prior art, the advantages of the utility model are: by the operating voltage of dimming controlling module be set to
The supply voltage of voltage sample module is in the same size, so that circuit, in startup stage, dimming controlling module can be constantly in standby
State takes the excessive electric current of constant current/constant voltage module and output is caused to flash to prevent the too early access system of dimming controlling module
The problem of, efficiently convenient, the supply voltage that this kind of mode makes the operating voltage of dimming controlling module follow voltage sample module is same
Step variation, is able to achieve in circuit abnormality or operating voltage deficiency, and dimming controlling module immediately switches to standby mode, and sufficiently
Utilizing the point --- dimming controlling module does not work, and can not provide the voltage for being enough to make switching circuit to start, and then switching circuit
Shutdown reduces switching circuit loss, protects load so that the connection between constant current/constant voltage module and load be made to disconnect rapidly
Safety.
Detailed description of the invention
Fig. 1 is a kind of structure principle chart of the utility model intelligent electric power.
Fig. 2 is the corresponding partial circuit diagram of Fig. 1.
Fig. 3 is a kind of embodiment flow chart of the utility model for the auxiliary monitoring method of intelligent electric power.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and should not be understood as to the utility model
Limitation.
Figures 1 and 2 show that a kind of structure principle chart of the application intelligent electric power and its corresponding partial circuit diagram, figure
3 be a kind of corresponding auxiliary monitoring method.But it should be recognized that shown in Fig. 1-3 be only the application a kind of situation, this Shen
It please can also be that other are able to achieve the structure of the function of the application purpose, be all contained in scope of the present application, it is only right herein
Situation shown in Fig. 1-3 is illustrated.
As shown in Figure 1, the intelligent electric power include constant current/constant voltage module 1, be located at 1 rear end of constant current/constant voltage module and and its
The dimming controlling module 2 of electrical connection, the switching circuit 3 being electrically connected with constant current/constant voltage module, the switching circuit 3 is for connecting
Constant current/constant voltage module 1 and load, by the control of dimming controlling module 2.
The improvement of the application is, voltage sample mould is additionally provided between constant current/constant voltage module 1 and dimming controlling module 2
The supply voltage of block 4, the voltage sample module 4 is provided by constant current/constant voltage module 1,2 real-time detection voltage of dimming controlling module
Voltage division signal obtained by the sampling resistor of sampling module 4, while the working power of the dimming controlling module 2 is by voltage sample module
4 supply voltage provides.
By the working voltage design of dimming controlling module at equal with the supply voltage of voltage sampling circuit, make brightness adjustment control
Module consistent variation synchronous with the supply voltage of voltage sample module, when can effectively realize circuit start, at dimming controlling module
In standby mode, prevent it from accessing circuit too early, and excessively take electricity from constant current/constant voltage module and cause constant current/constant voltage module without
Method starting causes rear end output flashing, causes the problem of human body discomfort；Switching circuit is controlled by dimming controlling module, can be ingenious
Using dimming controlling module because circuit abnormality or it is unstable cause to enter standby mode due to working power is insufficient, dimming controlling module
The characteristics of switching circuit is connected in enough starting voltage can not be then provided into standby mode, when preventing circuit abnormality, switch
Circuit is constantly in the problem of linear zone causes power consumption excessively high and damages.
The voltage sample module 4 includes at least two concatenated resistance, as shown in Fig. 2, voltage is adopted in the present embodiment
Egf block 4 includes concatenated first resistor R23, second resistance R58, and the detection port of dimming controlling module 2 is then connected to first
Between resistance R23 and second resistance R58, for detecting second resistance R58 namely the got pressure drop of sampling resistor, according to the pressure drop
And the ratio between first resistor R23 and second resistance R58, the supply voltage of current voltage sampling module 4 can be conversed, thus
According to information decision circuitry status at this time, and then corresponding control methods are taken, and specific deterministic process hereinafter will
It elaborates.
In order to avoid the Pressure-drop instability on sampling resistor, as shown in Fig. 2, in the both ends second resistance R58 parallel filtering electricity
Hold C21.Meanwhile the working power end of dimming controlling module 2 passes through the voltage-stabiliser tube N3 and triode Q2 electric branch circuit formed and electricity
The power voltage terminal of sampling module 4 is pressed to be connected, specifically, the non-inverting input terminal of the voltage-stabiliser tube N3 is connected by resistance R38 and electricity
The divider resistance branch 5 that R39 is formed is hindered, output end passes through the power voltage terminal of current-limiting resistance R37 connection voltage sample module 4,
Cathode ground connection, the output end of the base stage connection voltage-stabiliser tube N3 of triode Q2, collector connect the supply voltage of voltage sample module 4
End, emitter are connected with the working power end of dimming controlling module 2.
In the present embodiment, the constant current/constant voltage module 1 is ACDC circuit, the switching circuit 3 by metal-oxide-semiconductor Q4 and its
His conventional device is constituted, but is readily conceivable that, which is not only merely ACDC module, the switch it is electric
Road is not only that MOS is constituted, and is such as also possible to bipolar junction transistor composition.
Fig. 3 shows auxiliary monitoring method corresponding with the application intelligent electric power.Such as Fig. 3, the method includes,
Step S1, dimming controlling module detection judges whether the supply voltage of voltage sample module reaches stationary value；Herein
Consistent with aforementioned structure corresponding content, i.e. the detection port of dimming controlling module obtains the sampling resistor institute of voltage sample module
Voltage is obtained the gained voltage is converted to obtain voltage sample module in conjunction with each resistance value ratio of voltage sample module
Current power voltage, and current power voltage is compared with stationary value；
Step S2, if so, thening follow the steps S3；Step S1 is executed if it is not, then jumping；
Step S3, judge whether the supply voltage of voltage sample module is stable and is in setting range, and execute correspondence
Operation.
Specifically, judge whether the supply voltage of voltage sample module is stable and is in setting range in the S3, and
Respective operations are executed, specifically:
If step A1, judging, the supply voltage of the voltage sample module is stable and is in setting range, executes
Step A3；
If step A2, judging, the supply voltage of the voltage sample module is unstable or is not in setting range,
It jumps and executes step S1；
Step A3, dimming controlling module enters normal mode of operation, control output, while starting load short circuit timer.
The present processes also proceed as follows after dimming controlling module enters normal mode of operation,
Step B1, the supply voltage for continuing to monitor the voltage sample module, judges whether it is reduced to predetermined value；
Step B2, if so, thening follow the steps B3, if it is not, the A3 that then gos to step；
Step B3, dimming controlling module control switch circuit turns off, and closes output, while judging load short circuits timer
Whether current time is less than setting value, if so, thening follow the steps B4, executes step S1 if it is not, then jumping；
Step B4, starting short-circuit protection delay, then jumps and executes step S1.
Specific to the corresponding embodiment of Fig. 1, Fig. 2, corresponding detailed process are as follows:
The power supply of dimming controlling module and voltage sample module first is all from the Vcc of ACDC control chip, is starting
When dimming controlling module, namely control chip operation in standby mode, at this time only have very little standby current, ACDC is just
Often starting.
The condition that dimming controlling module is started to work is that Vcc voltage is stable and cut in the range of setting-i.e. output
Voltage is stable.In the circuit start stage, dimming controlling module is not accessed, after output loop is established, dimming controlling module
The problem of accessing, being flashed in this way to avoid output again.
In normal work, dimming controlling module still monitors Vcc voltage, when output overloading or output short-circuit, can go out
Show Vcc voltage decline, trigger protection namely switching circuit are understood when Vcc drops to the limit value of setting, if metal-oxide-semiconductor Q4 is turned off, after
And ACDC circuit and output end are disconnected, namely enter short circuit protection mode, while when brightness adjustment control chip does one longer
Between delay, then again again detection judge Vcc voltage, rearming thus is avoided that output mos pipe because circuit is short
Road and make itself to be constantly in the problem of linear zone is burned out.
Other than above-mentioned improvement, other similar improvement are also contained in the improvement threshold of the utility model, herein
It repeats no more.While there has been shown and described that the embodiments of the present invention, it will be appreciated by those skilled in the art that: it is not taking off
These embodiments can be carried out with a variety of variations, modification, replacement and deformation in the case where from the principles of the present invention and objective.
Claims (5)
1. a kind of intelligent electric power, the intelligent electric power include,
Constant current/constant voltage module (1)；
Dimming controlling module (2), the dimming controlling module (2) are located at constant current/constant voltage module (1) rear end and are connected electrically；
Switching circuit (3), the switching circuit (3) are controlled by tune for being electrically connected constant current/constant voltage module (1) and load
Photocontrol module (2)；
It is characterized by:
It further include the voltage sample module (4) being set between constant current/constant voltage module (1) and dimming controlling module (2)；
The supply voltage of the voltage sample module (4) is provided by constant current/constant voltage module (1), and dimming controlling module (2) is examined in real time
Survey voltage division signal obtained by the sampling resistor of voltage sample module (4)；
The working power of the dimming controlling module (2) is provided by the supply voltage of voltage sample module (4).
2. intelligent electric power according to claim 1, it is characterised in that:
The voltage sample module (4) includes two concatenated resistance；
The detection port of dimming controlling module (2) is connected between at least two series resistance, for detecting a wherein sampling
The got pressure drop of resistance, and according to the pressure drop decision circuitry working condition, to take corresponding control methods.
3. intelligent electric power according to claim 1, it is characterised in that:
The constant current/constant voltage module (1) is ACDC circuit, and the switching circuit (3) includes metal-oxide-semiconductor or bipolar junction transistor.
4. intelligent electric power according to claim 2, it is characterised in that:
Sampling resistor (R58) the both ends parallel filtering capacitor (C21).
5. intelligent electric power according to claim 1, it is characterised in that:
Electric branch circuit that the working power end of the dimming controlling module (2) is formed by voltage-stabiliser tube (N3) and triode (Q2) and
The power voltage terminal of voltage sample module (4) is connected；
The non-inverting input terminal of the voltage-stabiliser tube (N3) connects divider resistance branch (5), and output end is connected by current-limiting resistance (R37)
The power voltage terminal of voltage sample module (4), cathode ground connection；
The output end of base stage connection voltage-stabiliser tube (N3) of triode (Q2), collector connect the power supply electricity of voltage sample module (4)
Pressure side, emitter are connected with the working power end of dimming controlling module (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820839462.6U CN208806992U (en) | 2018-05-31 | 2018-05-31 | A kind of intelligent electric power |
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|---|---|---|---|
| CN201820839462.6U CN208806992U (en) | 2018-05-31 | 2018-05-31 | A kind of intelligent electric power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031643A (en) * | 2019-11-12 | 2020-04-17 | 漳州立达信光电子科技有限公司 | Light sensation control circuit and control method |
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2018
- 2018-05-31 CN CN201820839462.6U patent/CN208806992U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031643A (en) * | 2019-11-12 | 2020-04-17 | 漳州立达信光电子科技有限公司 | Light sensation control circuit and control method |
| CN111031643B (en) * | 2019-11-12 | 2021-09-07 | 漳州立达信光电子科技有限公司 | Light sensation control circuit and control method |
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