CN202110209U - Undervoltage acquisition circuit - Google Patents
Undervoltage acquisition circuit Download PDFInfo
- Publication number
- CN202110209U CN202110209U CN2011202128834U CN201120212883U CN202110209U CN 202110209 U CN202110209 U CN 202110209U CN 2011202128834 U CN2011202128834 U CN 2011202128834U CN 201120212883 U CN201120212883 U CN 201120212883U CN 202110209 U CN202110209 U CN 202110209U
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- Prior art keywords
- optocoupler
- resistance
- acquisition circuit
- input end
- working power
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Abstract
The utility model discloses an undervoltage acquisition circuit which comprises an optocoupler and a voltage-regulator tube; a first working power supply is in ground connection by a first resistor, a second resistor and a third resistor; a fourth terminal is connected with an input end of the voltage-regulator tube; an output end of the voltage-regulator tube is connected with one input end of the optocoupler; the other input end of the optocoupler is connected with the first working power supply by a fourth resistor; one output end of the optocoupler is in ground connection; and the other output end of the optocoupler is connected with a single chip microcomputer. The undervoltage acquisition circuit is simple in the circuit structure and convenient to use, and is capable of effectively distinguishing a normal state and an effective state.
Description
Technical field
The utility model relates to a kind of application circuit, concrete relates to a kind of under-voltage Acquisition Circuit.
Background technology
In the side circuit use occasion, when voltage did not reach the ratings of electric equipment, circuit just was in under-voltage condition, and will reduce the serviceable life of reliability of products and product this moment, so we must judge circuit and whether are in under-voltage condition.Existing under-voltage Acquisition Circuit is varied of a great variety, but most complex structure, function is complicated; Adopt the driving circuit of complicated circuit construction to accomplish the voltage acquisition function often; Cost can increase so on the one hand, in addition on the one hand, and after circuit structure is in a single day complicated; Its labile factor is behind so just reducing product percent of pass virtually also increasing.
The utility model content
For overcoming deficiency of the prior art, the purpose of the utility model is to provide a kind of under-voltage Acquisition Circuit simple in structure.
In order to solve the problems of the technologies described above, realize above-mentioned purpose, the utility model has adopted following technical scheme:
A kind of under-voltage Acquisition Circuit; Comprise optocoupler and stabilivolt; First working power is successively through first resistance, second resistance and the 3rd resistance eutral grounding; The 4th terminals connect the input end of said stabilivolt, and the output terminal of said stabilivolt connects an input end of said optocoupler, and another input end of said optocoupler connects said first working power through the 4th resistance; An output head grounding of said optocoupler, another output terminal of said optocoupler connects single-chip microcomputer.
Further, be connected the 5th resistance between the output terminal of said stabilivolt and the 5th terminals, be connected the 6th resistance between the 6th terminals and second working power.
The course of work of the pressure sensor signal Acquisition Circuit of the utility model is following:
In the time of at the beginning, under the first working power effect, optocoupler conducting single-chip microcomputer is adopted low level and is confirmed it is normal signal.Surely do not live when the value of said first working power reduces back stabilivolt voltage, not conducting of optocoupler since on draw the 6th resistance existence at this moment optocoupler be output as high level.Normal condition and effective status have been distinguished.
The utlity model has following advantage:
The under-voltage Acquisition Circuit of the utility model simple in structure, easy to use.
Above-mentioned explanation only is the general introduction of the utility model technical scheme, in order more to know the technological means of understanding the utility model, and can implement according to the content of instructions, below with the preferred embodiment of the utility model and conjunction with figs. specify as after.The embodiment of the utility model is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is the circuit theory diagrams of the under-voltage Acquisition Circuit of the utility model.
Label declaration among the figure: 1, the output terminal of optocoupler, 2, the input end of optocoupler, 3, the earth terminal of optocoupler, the 4, the 4th terminals, the 5, the 5th terminals, the 6, the 6th terminals.
Embodiment
Below in conjunction with accompanying drawing and embodiment the technology implementation process of the utility model is further specified.
Referring to shown in Figure 1; A kind of under-voltage Acquisition Circuit; Comprise optocoupler U1 and stabilivolt IC1, through first resistance R 1, second resistance R 2 and the 3rd resistance R 3 ground connection, the 4th terminals connect the input end 2 of said stabilivolt IC1 to the first working power V1 successively; The output terminal 1 of said stabilivolt IC1 connects the input end of said optocoupler U1, and another input end of said optocoupler connects the said first working power V1 through the 4th resistance R 4; The output head grounding of said optocoupler U1, another output terminal of said optocoupler U1 connects single-chip microcomputer P1.
Further, be connected between the output terminal 1 of said stabilivolt IC1 and the 5th terminals between the 5th resistance R 5, the six terminals and the second working power V2 and be connected the 6th resistance R 6.
The foregoing description is technical conceive and the characteristics for the utility model is described just, its objective is to be the content that lets the one of ordinary skilled in the art can understand the utility model and to implement according to this, can not limit the protection domain of the utility model with this.The variation or the modification of every equivalence of having done according to the essence of the utility model content all should be encompassed in the protection domain of the utility model.
Claims (2)
1. under-voltage Acquisition Circuit; Comprise optocoupler (U1) and stabilivolt (IC1); It is characterized in that: first working power (V1) is successively through first resistance (R1), second resistance (R2) and the 3rd resistance (R3) ground connection; The 4th terminals connect the input end (2) of said stabilivolt (IC1), and the output terminal (1) of said stabilivolt (IC1) connects an input end of said optocoupler (U1), and another input end of said optocoupler connects said first working power (V1) through the 4th resistance (R4); An output head grounding of said optocoupler (U1), another output terminal of said optocoupler (U1) connects single-chip microcomputer (P1).
2. under-voltage Acquisition Circuit according to claim 1; It is characterized in that: be connected the 5th resistance (R5) between the output terminal (1) of said stabilivolt (IC1) and the 5th terminals, be connected the 6th resistance (R6) between the 6th terminals and second working power (V2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202128834U CN202110209U (en) | 2011-06-22 | 2011-06-22 | Undervoltage acquisition circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202128834U CN202110209U (en) | 2011-06-22 | 2011-06-22 | Undervoltage acquisition circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202110209U true CN202110209U (en) | 2012-01-11 |
Family
ID=45435654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202128834U Expired - Fee Related CN202110209U (en) | 2011-06-22 | 2011-06-22 | Undervoltage acquisition circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202110209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662104A (en) * | 2012-04-18 | 2012-09-12 | 华为技术有限公司 | Zero-crossing detection method and circuit |
-
2011
- 2011-06-22 CN CN2011202128834U patent/CN202110209U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102662104A (en) * | 2012-04-18 | 2012-09-12 | 华为技术有限公司 | Zero-crossing detection method and circuit |
| CN102662104B (en) * | 2012-04-18 | 2015-06-17 | 华为技术有限公司 | Zero-crossing detection method and circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20120622 |