CN206057425U - The adjustable DC voltage detecting system of marginal range - Google Patents
The adjustable DC voltage detecting system of marginal range Download PDFInfo
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- CN206057425U CN206057425U CN201620823279.8U CN201620823279U CN206057425U CN 206057425 U CN206057425 U CN 206057425U CN 201620823279 U CN201620823279 U CN 201620823279U CN 206057425 U CN206057425 U CN 206057425U
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Abstract
The utility model discloses a kind of adjustable DC voltage detecting system of marginal range, which includes control circuit, voltage comparator circuit, reference voltage circuit, adjustable voltage sample circuit, and adjustable voltage sample circuit includes upper voltage limit sampling unit, lower voltage limit sampling unit；Upper voltage limit sampling unit includes that the adjustable resistance R1 that fixed value resistance R2 is connected with fixed value resistance R2, adjustable resistance R1 are parallel with filter capacitor C1；Lower voltage limit sampling unit includes that the adjustable resistance R3 that fixed value resistance R4 is connected with fixed value resistance R4, fixed value resistance R4 are parallel with filter capacitor C2.This utility model simply adjusts the flow process of detection voltage marginal range by the adjustable voltage sample circuit of simple structure, is conducive to the failture evacuation of accelerating circuit system.
Description
Technical field
This utility model is related to technical field of electronic control, more particularly, to a kind of adjustable DC voltage inspection of marginal range
Examining system.
Background technology
It is the fault detection method commonly used in circuit system by voltage or current signal detection circuit running status, direct current
Voltage detecting system is the functional circuit that circuit system safe operation is guaranteed in DC electronic circuit, including voltage sample, reference
The parts such as voltage source, signal contrast process, control unit.If detecting abnormal voltage, detecting system can send signal prompt, treat
After exception is processed, system recovery normal work.
As the change of system load or the change of battery electric quantity have a certain degree of impact to supply voltage, in load
The voltage pulsation occurred during change, this voltage pulsation in short-term will not cause significant impact to the safe operation of system, at this
In the case of kind, portion voltage detecting system can point out electric voltage exception, be likely to result in unnecessary system and delay machine.This situation
Under, if the marginal range of voltage detecting system can be adjusted, system can recover normal work quickly, and generally circuit system is fixed
After getting off, components and parts need to be changed to adjusting parameter or adjustment systems soft ware could realize that adjustment difficulty is relatively large.
Utility model content
The purpose of this utility model is to provide a kind of marginal range adjustable DC voltage detecting system, and which can adjust
The marginal range of voltage detecting system, reduction system is because loading the voltage pulsation and caused machine of delaying that change is caused.
To solve above-mentioned technical problem, embodiment of the present utility model provides a kind of adjustable unidirectional current of marginal range
Pressure detecting system, which includes control circuit, the voltage comparator circuit for being connected to control circuit, is connected to the reference electricity of voltage comparator circuit
Volt circuit, voltage sampling circuit, voltage sampling circuit are adjustable voltage sample circuit, and adjustable voltage sample circuit includes rationing the power supply
Pressure sampling unit, lower voltage limit sampling unit；Upper voltage limit sampling unit includes the fixed value resistance R2 of fixed resistance value and definite value electricity
The adjustable resistance R1 of R2 series connection and adjustable resistance is hindered, adjustable resistance R1 is parallel with filter capacitor C1, fixed value resistance R2 and adjustable electric
There is between resistance R1 upper voltage limit sampling output interface, fixed value resistance R2 is connected to voltage to be detected, another terminations of adjustable resistance R1
Ground；Lower voltage limit sampling unit include the fixed value resistance R4 of fixed resistance value connect with fixed value resistance R4 and adjustable resistance it is adjustable
Resistance R3, fixed value resistance R4 are parallel with filter capacitor C2, sample with lower voltage limit between fixed value resistance R4 and adjustable resistance R3
Output interface, fixed value resistance R4 other ends ground connection, adjustable resistance R3 are connected to voltage to be detected.
In terms of existing technologies, embodiment of the present utility model is by by the upper voltage limit in voltage sampling circuit
In sampling unit, lower voltage limit sampling unit, the adjustable resistance of respective upper Parameter adjustable section of connecting, adopts such that it is able to change voltage
Sample circuit obtains the ratio of tested voltage, so as to realize the adjustment of voltage detecting system voltage tolerant, and then is conducive to accelerating electricity
The failture evacuation of road system, it is to avoid system is because loading the voltage pulsation and caused machine of delaying that change is caused.
Further, voltage comparator circuit adopts LM393M, and the voltage and reference obtained by comparison voltage Acquisition Circuit is electric
The reference voltage that volt circuit is provided, sends status signal to control circuit, and the reference voltage provided by reference voltage circuit is logical
Frequently with relatively low magnitude of voltage.
Further, control circuit adopts MSP430 single-chip microcomputers, is made with the control circuit that MSP430 single-chip microcomputers are built as core
For the maincenter of whole system, control circuit points out voltage status normal or abnormal according to voltage comparator circuit status signal, so as to
Change the state of cue circuit.
Description of the drawings
Fig. 1 is the adjustable DC voltage detecting system theory diagram of marginal range；
Fig. 2 is adjustable voltage sample circuit figure in the adjustable DC voltage detecting system of marginal range.
Specific embodiment
It is to make the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
Each embodiment of type is explained in detail.However, it will be understood by those skilled in the art that each in this utility model
In embodiment, in order that reader more fully understands the application and proposes many ins and outs.But, even if there is no these skills
Art details and many variations based on following embodiment and modification, it is also possible to realize that each claim of the application is required and protect
The technical scheme of shield.
Embodiment of the present utility model is related to a kind of adjustable DC voltage detecting system of marginal range, and which includes control
Circuit, be connected to control circuit and for contrast sampled signal and reference voltage signal voltage comparator circuit, be connected to voltage ratio compared with
Circuit and reference voltage circuit, voltage sampling circuit for providing stable reference voltage, with reference to shown in Fig. 1, voltage sample
Circuit is adjustable voltage sample circuit, and it is single that adjustable voltage sample circuit includes that upper voltage limit sampling unit, lower voltage limit are sampled
Unit, upper voltage limit sampling unit are used for the collection and output of upper voltage limit, and lower voltage limit sampling unit is used for adopting for lower voltage limit
Collection and output, are to realize the adjustable function of marginal range, are respectively provided with upper voltage limit sampling unit and lower voltage limit sampling unit
There is the adjustable adjustable resistance of resistance.
Specifically by referring to Fig. 2, upper voltage limit sampling unit T1 includes the fixed value resistance R2 of fixed resistance value and definite value electricity
The adjustable resistance R1 of R2 series connection and adjustable resistance is hindered, fixed value resistance R2 has larger internal resistance, and adjustable resistance R1 is used as Parameter adjustable
Section components and parts, and then realize that voltage sampling circuit can obtain relevant voltage signal according to a certain percentage, adjustable resistance R1 is in parallel
There is filter capacitor C1, there is between fixed value resistance R2 and adjustable resistance R1 upper voltage limit sampling output interface, fixed value resistance R2 connects
In voltage to be detected, adjustable resistance R1 other ends ground connection, the resistance of the resistance adjusting range and fixed value resistance R2 of adjustable resistance R1
Value size is selected according to lower voltage limit sampling unit institute working environment, and here is not limited.
In conjunction with shown in Fig. 2, lower voltage limit sampling unit T2 includes the fixed value resistance R4 and fixed value resistance R4 of fixed resistance value
The series connection and adjustable resistance R3 of adjustable resistance, fixed value resistance R4 have a larger internal resistance, adjustable resistance R3 samples as upper voltage limit
Parameter adjustable section components and parts in unit and can realize that voltage sampling circuit can obtain voltage signal according to a certain percentage, definite value
Resistance R4 is parallel with filter capacitor C2, has lower voltage limit sampling output interface between fixed value resistance R4 and adjustable resistance R3, fixed
Value resistance R4 other end ground connection, adjustable resistance R3 are connected to voltage to be detected, the resistance size of fixed value resistance R4 and adjustable resistance
The adjustable Standard resistance range of R3 is selected according to specific working environment, and here is not limited.
Present embodiment is by by the upper voltage limit sampling unit T1 in voltage sampling circuit, lower voltage limit sampling unit T2
In respective upper Parameter adjustable section of series connection adjustable resistance, the ratio of tested voltage is obtained such that it is able to change voltage sampling circuit,
So as to realize the adjustment of voltage detecting system voltage tolerant, it is to avoid system is caused because load changes the voltage pulsation for causing to delay
Machine.
In the present embodiment, voltage comparator circuit adopts LM393M, the voltage obtained by comparison voltage Acquisition Circuit
The reference voltage provided with reference voltage circuit, sends status signal to control circuit, and reference voltage circuit here is by high-precision
Degree Zener diode and resistant series are formed, and one filter capacitor of addition is parallel to Zener diode two ends, due to reference voltage
Circuit refers to prior art, and not in this to go forth.
In the present embodiment, control circuit adopts MSP430 single-chip microcomputers, with the control that MSP430 single-chip microcomputers are built as core
Maincenter of the circuit processed as whole system, control circuit point out voltage status normal according to voltage comparator circuit status signal or
It is abnormal.
In the present embodiment, adjustable resistance R1, adjustable resistance R3 can arrange controlling switch, in the case of necessary, to whole
Voltage sampling circuit carries out tripping protection.
Below the workflow of the present embodiment is described in detail：
The first step, system electrification, control circuit initialization, acquiescence cue circuit state are normal.
Second step, adjustable voltage sample circuit obtain sampled signal, are compared with reference voltage signal.
3rd step, when voltage comparator circuit judges that sampled voltage signal is changed with reference voltage state, to control electricity
Road sends signal, and report voltage is higher or low.
4th step, control circuit send electric voltage exception prompting, the directly response of Request System primary processor or handling failure.
5th step, according to system suggestion whether normal voltage failure is, adjusts adjustable voltage sample circuit component parameter, real
The now adjustment to admissible voltage fluctuation scope, the non-essential machine failure of delaying of reduction system.
To sum up, by the adjustable voltage sample circuit of simple structure in the adjustable DC voltage detecting system of the marginal range
Simply to adjust the flow process of detection voltage marginal range, be conducive to the failture evacuation of accelerating circuit system.
It will be understood by those skilled in the art that the respective embodiments described above are to realize of the present utility model being embodied as
Example, and in actual applications, can to which, various changes can be made in the form and details, without departing from spirit of the present utility model
And scope.
Claims (3)
1. the adjustable DC voltage detecting system of a kind of marginal range, which includes control circuit, is connected to the voltage ratio of control circuit
Compared with circuit, the reference voltage circuit for being connected to voltage comparator circuit, voltage sampling circuit, it is characterised in that the voltage sample electricity
Road is adjustable voltage sample circuit, and it is single that the adjustable voltage sample circuit includes that upper voltage limit sampling unit, lower voltage limit are sampled
Unit；
The upper voltage limit sampling unit includes that the fixed value resistance R2 of fixed resistance value is connected with fixed value resistance R2 and adjustable resistance
Adjustable resistance R1, the adjustable resistance R1 are parallel with filter capacitor C1, have between the fixed value resistance R2 and adjustable resistance R1
Upper voltage limit sampling output interface, the fixed value resistance R2 are connected to voltage to be detected, the adjustable resistance R1 other ends ground connection；
The lower voltage limit sampling unit includes that the fixed value resistance R4 of fixed resistance value is connected with fixed value resistance R4 and adjustable resistance
Adjustable resistance R3, the fixed value resistance R4 are parallel with filter capacitor C2, have between the fixed value resistance R4 and adjustable resistance R3
Lower voltage limit sampling output interface, the fixed value resistance R4 other ends ground connection, the adjustable resistance R3 are connected to voltage to be detected.
2. the adjustable DC voltage detecting system of marginal range according to claim 1, it is characterised in that the voltage ratio
LM393M is adopted compared with circuit.
3. the adjustable DC voltage detecting system of marginal range according to claim 1, it is characterised in that the control electricity
Road adopts MSP430 single-chip microcomputers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201620823279.8U CN206057425U (en) | 2016-07-31 | 2016-07-31 | The adjustable DC voltage detecting system of marginal range |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620823279.8U CN206057425U (en) | 2016-07-31 | 2016-07-31 | The adjustable DC voltage detecting system of marginal range |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843786A (en) * | 2017-10-31 | 2018-03-27 | 迈普通信技术股份有限公司 | A kind of voltage tolerant Auto-Test System and method |
| CN112730970A (en) * | 2020-12-18 | 2021-04-30 | 扬州大学 | Isolated high-precision wide-range voltage measurement system and measurement method |
| WO2023165030A1 (en) * | 2022-03-02 | 2023-09-07 | 长鑫存储技术有限公司 | Through silicon via test circuit and method |
-
2016
- 2016-07-31 CN CN201620823279.8U patent/CN206057425U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107843786A (en) * | 2017-10-31 | 2018-03-27 | 迈普通信技术股份有限公司 | A kind of voltage tolerant Auto-Test System and method |
| CN107843786B (en) * | 2017-10-31 | 2020-09-15 | 迈普通信技术股份有限公司 | Automatic voltage tolerance testing system and method |
| CN112730970A (en) * | 2020-12-18 | 2021-04-30 | 扬州大学 | Isolated high-precision wide-range voltage measurement system and measurement method |
| CN112730970B (en) * | 2020-12-18 | 2023-07-18 | 扬州大学 | Isolated high-precision wide-range voltage measurement system and measurement method |
| WO2023165030A1 (en) * | 2022-03-02 | 2023-09-07 | 长鑫存储技术有限公司 | Through silicon via test circuit and method |
| CN116736059A (en) * | 2022-03-02 | 2023-09-12 | 长鑫存储技术有限公司 | Through silicon via detection circuit and method |
| CN116736059B (en) * | 2022-03-02 | 2024-06-07 | 长鑫存储技术有限公司 | Through silicon via detection circuit and method |
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