CN208158224U - A kind of sampling feedback circuit applied to emergency driving system - Google Patents
A kind of sampling feedback circuit applied to emergency driving system Download PDFInfo
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- CN208158224U CN208158224U CN201820699800.0U CN201820699800U CN208158224U CN 208158224 U CN208158224 U CN 208158224U CN 201820699800 U CN201820699800 U CN 201820699800U CN 208158224 U CN208158224 U CN 208158224U
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- driving power
- emergency
- power supply
- emergency driving
- sampling feedback
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Abstract
The utility model provides a kind of sampling feedback circuit applied to emergency driving system, including driving power, emergency driving power supply, sampling feedback processing circuit, isolation output module and load, the driving power and emergency driving power supply are connected in same load, and the signal of the emergency driving power supply is exported by sampling feedback processing circuit to power drives.The utility model is sampled by electrical isolation in load end, and control driving power is gone.When meeting an urgent need lighting, driving power is controlled by sampling feedback processing circuit, reaches driving power and does not export, thus will not two power supplys be superimposed be output to the same load simultaneously, eliminate influence from each other；In driving power powering load, the spacing output circuit of emergency power supply also keeps apart load and emergency power supply, and the voltage of load will not pass on emergency driving, will not impact to emergency driving.
Description
Technical field
The utility model relates to electrical testing technical field, in particular to a kind of sampling feedback applied to emergency driving system
Circuit.
Background technique
It is interfered between each other to solve emergency driving and driving power, traditional method is the input of driving by emergency
The input of power supply（Such as Fig. 1）, the output of driving also has to pass through the output of emergency driving power supply, output and input by two after
Electric appliance controls, and does not generate interference mutually achieve the purpose that the two power supplys, but this connection type is very unstable,
The mode that repeatedly switching has a power failure and sends a telegram here in actual use, is easy to mistake occur, causes emergency driving power supply can not normal work
Make, this causes great inconvenience to practical application.
Summary of the invention
In order to overcome in the prior art emergency driving power supply and driving power switch error-prone defect, the utility model mentions
It is not interfere with each other for a kind of sampling feedback circuit applied to emergency driving system to guarantee that two lines road can work normally.
To achieve the goals above, the utility model provides following technical scheme：
A kind of sampling feedback circuit applied to emergency driving system, including driving power, emergency driving power supply, sampling are instead
Processing circuit, isolation output module and load are presented, the driving power and emergency driving power supply are connected in same load, described
The signal of emergency driving power supply is exported by sampling feedback processing circuit to power drives；
The sampling feedback circuit includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, optocoupler
U1 and switching tube Q1, the first resistor R1 and second resistance R2 are connected in series, and the 3rd resistor R3, the 4th resistance R4 and open
It closing pipe Q1 and forms a biasing circuit, the signal of the emergency driving power supply is divided by first resistor R1 and second resistance R2,
By the working condition of optocoupler U1 isolation control switch pipe Q1, biasing circuit is conveyed to driving power after amplifying signal.
Further, the emergency driving power supply is different from the input terminal of driving power, the emergency driving power supply and drive
The zero line side N of dynamic power supply is identical, and zero line is respectively L and L '.
Further, the output end of the emergency driving power supply is connected with isolation output module, the isolation output module
Output end be connected in load and sampling feedback processing circuit.
Beneficial effect brought by the utility model is：It by electrical isolation, is sampled in load end, removes control driving electricity
Source.When meeting an urgent need lighting, driving power is controlled by sampling feedback processing circuit, reaches driving power and does not export, in this way
Would not two power supplys be superimposed be output to the same load simultaneously, eliminate influence from each other；
In driving power powering load, the spacing output circuit of emergency power supply also keeps apart load and emergency power supply
Come, the voltage of load will not pass on emergency driving, will not impact to emergency driving.
Detailed description of the invention
Fig. 1 is available circuit schematic diagram.
Fig. 2 is the schematic diagram of the utility model structure.
Fig. 3 is the circuit diagram of the utility model structure.
Specific embodiment
The preferred embodiment of the utility model is described in detail with reference to the accompanying drawing, so that the advantages of the utility model
It can be easier to be readily appreciated by one skilled in the art with feature, to make the protection scope of the utility model apparent clear
Define.
As Figure 2-3, a kind of sampling feedback circuit applied to emergency driving system, including driving power, emergency are driven
Dynamic power supply, sampling feedback processing circuit, isolation output module and load, the driving power and emergency driving power supply are connected to together
In one load, the signal of the emergency driving power supply is exported by sampling feedback processing circuit to power drives；
The sampling feedback circuit includes first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, optocoupler
U1 and switching tube Q1, the first resistor R1 and second resistance R2 are connected in series, and play the role of partial pressure, the optocoupler U1 play every
From the effect with transmission signal, it is ensured that the stability of sampled signal, the 3rd resistor R3, the 4th resistance R4 and switching tube Q1
A biasing circuit is formed, the signal that optocoupler U1 is transmitted amplifies, and the signal of the emergency driving power supply passes through first resistor R1
It is divided with second resistance R2, the working condition of switching tube Q1 in control biasing circuit is isolated by optocoupler U1, after signal is amplified
It is conveyed to driving power.
The emergency driving power supply is different from the input terminal of driving power, and the zero of the emergency driving power supply and driving power
Line end N is identical, and zero line is respectively L and L '.
The output end of the emergency driving power supply is connected with isolation output module, the output end point of the isolation output module
It is not connected in load and sampling feedback processing circuit.
The present invention will be further described with working principle with reference to the accompanying drawing.（Operational process and principle）
Driving power and emergency driving power supply are connected in same load, are equipped with and are isolated between emergency driving power supply and load
Output module, for guaranteeing that driving power and emergency driving power supply respectively the stability of circuit and mutually do not generate interference；
In normal operation, driving power directly acts in load, and emergency driving power supply does not work；Work as power failure
Afterwards, emergency driving power initiation transmits a signal to driving power end by sampling feedback circuit, at this point, driving power not work
Make, emergency driving power supply acts directly in load at this time, drives loaded work piece；After sending a telegram here again, emergency driving power supply is logical
Signal acquisition, disconnecting circuit are crossed, driving power works normally, and isolation output module can be by emergency driving power supply and load isolation
It opens, emergency driving power is not impacted；
The working principle of sampling feedback circuit is as follows：Emergency driving power supply exports signal to sampling feedback circuit, letter
Number by obtaining suitable voltage value after first resistor R1 and second resistance R2 partial pressure by optocoupler U1 isolation, and signal is transmitted
To switching tube Q1, the working condition of control switch pipe Q1 controls the output of driving power, wherein 3rd resistor R3 and the 4th
Resistance R4 is the bias voltage of Q1.
Above description is only a specific implementation of the present invention, but the protection scope of the utility model is not limited to
In this, anyone skilled in the art, can be without creative labor in the technical scope disclosed by the utility model
The dynamic change or replacement expected, should be covered within the scope of the utility model.Therefore, the protection model of the utility model
Enclosing be determined by the scope of protection defined in the claims.
Claims (3)
1. a kind of sampling feedback circuit applied to emergency driving system, which is characterized in that including driving power, emergency driving electricity
Source, sampling feedback processing circuit, isolation output module and load, the driving power and emergency driving power supply are connected to same negative
In load, the signal of the emergency driving power supply is exported by sampling feedback processing circuit to power drives；
The sampling feedback circuit include first resistor R1, second resistance R2,3rd resistor R3, the 4th resistance R4, optocoupler U1 and
Switching tube Q1, the first resistor R1 and second resistance R2 are connected in series, the 3rd resistor R3, the 4th resistance R4 and switching tube
Q1 forms a biasing circuit, and the signal of the emergency driving power supply is divided by first resistor R1 and second resistance R2, passed through
The working condition of optocoupler U1 isolation control switch pipe Q1, biasing circuit are conveyed to driving power after amplifying signal.
2. a kind of sampling feedback circuit applied to emergency driving system according to claim 1, which is characterized in that described
Emergency driving power supply is different from the input terminal of driving power, and the emergency driving power supply is identical as the zero line side N of driving power, fire
Line end is respectively L and L '.
3. a kind of sampling feedback circuit applied to emergency driving system according to claim 1, which is characterized in that described
The output end of emergency driving power supply is connected with isolation output module, and the output end of the isolation output module is connected to load
On sampling feedback processing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699800.0U CN208158224U (en) | 2018-05-11 | 2018-05-11 | A kind of sampling feedback circuit applied to emergency driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820699800.0U CN208158224U (en) | 2018-05-11 | 2018-05-11 | A kind of sampling feedback circuit applied to emergency driving system |
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| Publication Number | Publication Date |
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| CN208158224U true CN208158224U (en) | 2018-11-27 |
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| CN201820699800.0U Active CN208158224U (en) | 2018-05-11 | 2018-05-11 | A kind of sampling feedback circuit applied to emergency driving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640479A (en) * | 2018-12-18 | 2019-04-16 | 苏州科思尼克照明科技有限公司 | A kind of lighting device of and constant power output emergency driving |
-
2018
- 2018-05-11 CN CN201820699800.0U patent/CN208158224U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109640479A (en) * | 2018-12-18 | 2019-04-16 | 苏州科思尼克照明科技有限公司 | A kind of lighting device of and constant power output emergency driving |
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Address after: Huqiu high tech Zone of Suzhou City, Jiangsu province 215151 Shen Lane Road No. 1 Patentee after: Suzhou Angrui Electronic Technology Co., Ltd Address before: 215000 No. 1 Huqiu Shenxiang Road, Suzhou High-tech Zone, Jiangsu Province Patentee before: SUZHOU KOSNIC LIGHTING TECHNOLOGY Co.,Ltd. |