CN204721015U - A kind of uninterrupted power supply with fuse failure detector circuit - Google Patents
A kind of uninterrupted power supply with fuse failure detector circuit Download PDFInfo
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- CN204721015U CN204721015U CN201520335136.8U CN201520335136U CN204721015U CN 204721015 U CN204721015 U CN 204721015U CN 201520335136 U CN201520335136 U CN 201520335136U CN 204721015 U CN204721015 U CN 204721015U
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Abstract
A kind of uninterrupted power supply with fuse failure detector circuit, relate to uninterrupted power supply technical field, its uninterrupted power supply comprises storage battery and fuse, fuse uninterrupted power supply comprises the first voltage sampling circuit, second voltage sampling circuit, relatively drive circuit and warning circuit, the difference of the voltage that the voltage that the first voltage sampling circuit samples samples with the second voltage sampling circuit is less than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit not report to the police, the difference of voltage that samples with the second voltage sampling circuit of the voltage that samples of the first voltage sampling circuit be greater than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit to report to the police.
Description
Technical field
The utility model relates to uninterrupted power supply technical field, particularly relates to a kind of uninterrupted power supply with fuse failure detector circuit.
Background technology
Continuous input cell in ups system, generally all be serially connected with input fuse at input front end, prevent rear end fault or short circuit reason, cause overcurrent and burn out device, and once there is the situation that fuse damages, because system does not detect fuse, system just cannot quote abort situation, more can not judge whether fuse damages, maintenance personal's investigation step by step can only be leaned on finally could to find failure cause, so not only lost time but also be not easy to find abort situation, therefore the detection of the quality of fuse just having been seemed particularly important.
Utility model content
The purpose of this utility model is avoid weak point of the prior art and provide a kind of uninterrupted power supply with fuse failure detector circuit, this uninterrupted power supply with fuse failure detector circuit can find blown fuse early, avoids fault coverage to expand further.
The purpose of this utility model is achieved through the following technical solutions:
A kind of uninterrupted power supply with fuse failure detector circuit is provided, described uninterrupted power supply comprises storage battery and fuse, it is characterized in that: comprise the first voltage sampling circuit, second voltage sampling circuit, relatively drive circuit and warning circuit, the input of described first voltage sampling circuit is connected to one end of fuse, the output of described first voltage sampling circuit is connected with the described first input end comparing drive circuit, the input of described second voltage sampling circuit is connected to the other end of fuse, the output of described second voltage sampling circuit is connected with described the second input comparing drive circuit, the described output comparing drive circuit is connected with described warning circuit, the difference of the voltage that the voltage that described first voltage sampling circuit samples samples with described second voltage sampling circuit is less than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit not report to the police, the difference of voltage that samples with described second voltage sampling circuit of the voltage that samples of the first voltage sampling circuit be greater than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit to report to the police.
Described first voltage sampling circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, operational amplifier U1A, switching diode D1 and switching diode D2, one end of resistance R1 is connected with the negative pole BAT-of storage battery, the other end of resistance R1 and one end of resistance R3, one end of resistance R5 connects, the other end of resistance R3 is connected with the input negative terminal 2 of operational amplifier U1A, the other end of resistance R5 and the output 1 of operational amplifier U1A, the negative pole of switching diode D1, the positive pole of switching diode D2 is connected with one end of electric capacity C1, the other end ground connection of electric capacity C1, the positive pole of diode D1 meets power supply VCC, the minus earth of diode D2, one end of the one termination storage battery BAT+ of resistance R2, one end of the other end connecting resistance R4 of resistance R2, the positive input terminal 3 of another termination operational amplifier U1A of resistance R4 and one end of resistance R6, the other end ground connection of resistance R6.
Described second voltage sampling circuit comprises resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C2, operational amplifier U1B, switching diode D3 and switching diode D4, one end of resistance R7 is connected with the negative pole BAT-of storage battery, the other end of resistance R7 and one end of resistance R9, one end of resistance R11 connects, the other end of resistance R9 is connected with the input negative terminal 2 of operational amplifier U1B, the other end of resistance R11 and the output 1 of operational amplifier U1B, the negative pole of switching diode D3, the positive pole of switching diode D4 is connected with one end of electric capacity C2, the other end ground connection of electric capacity C1, the positive pole of diode D3 meets power supply VCC, the minus earth of diode D4, one end of the one termination storage battery BAT+ of resistance R8, one end of the other end connecting resistance R10 of resistance R8, the positive input terminal 3 of another termination operational amplifier U1B of resistance R10 and one end of resistance R12, the other end ground connection of resistance R12.
The described drive circuit that compares comprises window comparator, the output of the first voltage sampling circuit described in an input termination of described window comparator, the output of the second voltage sampling circuit described in another input termination of described window comparator.
Described warning circuit comprises light-emitting diode and buzzer.
The beneficial effects of the utility model: the utility model detects the front voltage of fuse by the first voltage sampling circuit, the rear terminal voltage of fuse is detected by the second voltage sampling circuit, the front voltage of fuse and rear terminal voltage are all delivered to and compares drive circuit, relatively drive circuit compares the front voltage of fuse and the difference of rear terminal voltage, if this difference is less than the magnitude of voltage comparing drive circuit and preset, then comparing drive circuit drives warning circuit not report to the police, if this difference is greater than the magnitude of voltage comparing drive circuit and preset, then comparing drive circuit drives warning circuit to report to the police, make uninterrupted power supply can find blown fuse early, fault coverage is avoided to expand further.
Accompanying drawing explanation
Accompanying drawing is utilized to be described further utility model, but the embodiment in accompanying drawing does not form any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the following drawings.
Fig. 1 is a kind of circuit diagram with the uninterrupted power supply of fuse failure detector circuit of the present utility model.
Fig. 2 is a kind of circuit diagram with the first voltage sampling circuit of the uninterrupted power supply of fuse failure detector circuit of the present utility model.
Fig. 3 is a kind of circuit diagram with the second voltage sampling circuit of the uninterrupted power supply of fuse failure detector circuit of the present utility model.
Embodiment
With the following Examples the utility model is further described.
A kind of uninterrupted power supply with fuse failure detector circuit of the present embodiment, described uninterrupted power supply comprises storage battery and fuse, in the present embodiment, as shown in Figure 1 to Figure 3, comprise the first voltage sampling circuit, second voltage sampling circuit, relatively drive circuit and warning circuit, the input of described first voltage sampling circuit is connected to one end of fuse, the output of described first voltage sampling circuit is connected with the described first input end comparing drive circuit, the input of described second voltage sampling circuit is connected to the other end of fuse, the output of described second voltage sampling circuit is connected with described the second input comparing drive circuit, the described output comparing drive circuit is connected with described warning circuit, the difference of the voltage that the voltage that described first voltage sampling circuit samples samples with described second voltage sampling circuit is less than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit not report to the police, the difference of voltage that samples with described second voltage sampling circuit of the voltage that samples of the first voltage sampling circuit be greater than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit to report to the police.
The present embodiment detects the front voltage of fuse by the first voltage sampling circuit, the rear terminal voltage of fuse is detected by the second voltage sampling circuit, the front voltage of fuse and rear terminal voltage are all delivered to and compares drive circuit, relatively drive circuit compares the front voltage of fuse and the difference of rear terminal voltage, if this difference is less than the magnitude of voltage comparing drive circuit and preset, then comparing drive circuit drives warning circuit not report to the police, if this difference is greater than the magnitude of voltage comparing drive circuit and preset, then comparing drive circuit drives warning circuit to report to the police, make uninterrupted power supply can find blown fuse early, fault coverage is avoided to expand further.
Wherein, described first voltage sampling circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, operational amplifier U1A, switching diode D1 and switching diode D2, one end of resistance R1 is connected with the negative pole BAT-of storage battery, the other end of resistance R1 and one end of resistance R3, one end of resistance R5 connects, the other end of resistance R3 is connected with the input negative terminal 2 of operational amplifier U1A, the other end of resistance R5 and the output 1 of operational amplifier U1A, the negative pole of switching diode D1, the positive pole of switching diode D2 is connected with one end of electric capacity C1, the other end ground connection of electric capacity C1, the positive pole of diode D1 meets power supply VCC, the minus earth of diode D2, one end of the one termination storage battery BAT+ of resistance R2, one end of the other end connecting resistance R4 of resistance R2, the positive input terminal 3 of another termination operational amplifier U1A of resistance R4 and one end of resistance R6, the other end ground connection of resistance R6.
Wherein, described second voltage sampling circuit comprises resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C2, operational amplifier U1B, switching diode D3 and switching diode D4, one end of resistance R7 is connected with the negative pole BAT-of storage battery, the other end of resistance R7 and one end of resistance R9, one end of resistance R11 connects, the other end of resistance R9 is connected with the input negative terminal 2 of operational amplifier U1B, the other end of resistance R11 and the output 1 of operational amplifier U1B, the negative pole of switching diode D3, the positive pole of switching diode D4 is connected with one end of electric capacity C2, the other end ground connection of electric capacity C1, the positive pole of diode D3 meets power supply VCC, the minus earth of diode D4, one end of the one termination storage battery BAT+ of resistance R8, one end of the other end connecting resistance R10 of resistance R8, the positive input terminal 3 of another termination operational amplifier U1B of resistance R10 and one end of resistance R12, the other end ground connection of resistance R12.
Wherein, the described drive circuit that compares comprises window comparator, the output of the first voltage sampling circuit described in an input termination of described window comparator, the output of the second voltage sampling circuit described in another input termination of described window comparator.
Wherein, described warning circuit comprises light-emitting diode and buzzer, and light-emitting diode can realize light and report to the police, and buzzer can realize audible alarm.
Finally should be noted that; above embodiment is only in order to illustrate the technical solution of the utility model; but not the restriction to the utility model protection range; although done to explain to the utility model with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to the technical solution of the utility model or equivalent replacement, and not depart from essence and the scope of technical solutions of the utility model.
Claims (5)
1. one kind has the uninterrupted power supply of fuse failure detector circuit, described uninterrupted power supply comprises storage battery and fuse, it is characterized in that: comprise the first voltage sampling circuit, second voltage sampling circuit, relatively drive circuit and warning circuit, the input of described first voltage sampling circuit is connected to one end of fuse, the output of described first voltage sampling circuit is connected with the described first input end comparing drive circuit, the input of described second voltage sampling circuit is connected to the other end of fuse, the output of described second voltage sampling circuit is connected with described the second input comparing drive circuit, the described output comparing drive circuit is connected with described warning circuit, the difference of the voltage that the voltage that described first voltage sampling circuit samples samples with described second voltage sampling circuit is less than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit not report to the police, the difference of voltage that samples with described second voltage sampling circuit of the voltage that samples of the first voltage sampling circuit be greater than the magnitude of voltage comparing and preset in drive circuit, then comparing drive circuit drives warning circuit to report to the police.
2. a kind of uninterrupted power supply with fuse failure detector circuit as claimed in claim 1, is characterized in that: described first voltage sampling circuit comprises resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electric capacity C1, operational amplifier U1A, one end of switching diode D1 and switching diode D2, resistance R1 is connected with the negative pole BAT-of storage battery, the other end of resistance R1 and one end of resistance R3, one end of resistance R5 connects, and the other end of resistance R3 is connected with the input negative terminal 2 of operational amplifier U1A, the other end of resistance R5 and the output 1 of operational amplifier U1A, the negative pole of switching diode D1, the positive pole of switching diode D2 is connected with one end of electric capacity C1, the other end ground connection of electric capacity C1, the positive pole of diode D1 meets power supply VCC, the minus earth of diode D2, one end of the one termination storage battery BAT+ of resistance R2, one end of the other end connecting resistance R4 of resistance R2, the positive input terminal 3 of another termination operational amplifier U1A of resistance R4 and one end of resistance R6, the other end ground connection of resistance R6.
3. a kind of uninterrupted power supply with fuse failure detector circuit as claimed in claim 1, is characterized in that: described second voltage sampling circuit comprises resistance R7, resistance R8, resistance R9, resistance R10, resistance R11, resistance R12, electric capacity C2, operational amplifier U1B, one end of switching diode D3 and switching diode D4, resistance R7 is connected with the negative pole BAT-of storage battery, the other end of resistance R7 and one end of resistance R9, one end of resistance R11 connects, and the other end of resistance R9 is connected with the input negative terminal 2 of operational amplifier U1B, the other end of resistance R11 and the output 1 of operational amplifier U1B, the negative pole of switching diode D3, the positive pole of switching diode D4 is connected with one end of electric capacity C2, the other end ground connection of electric capacity C1, the positive pole of diode D3 meets power supply VCC, the minus earth of diode D4, one end of the one termination storage battery BAT+ of resistance R8, one end of the other end connecting resistance R10 of resistance R8, the positive input terminal 3 of another termination operational amplifier U1B of resistance R10 and one end of resistance R12, the other end ground connection of resistance R12.
4. a kind of uninterrupted power supply with fuse failure detector circuit as claimed in claim 1, it is characterized in that: the described drive circuit that compares comprises window comparator, the output of the first voltage sampling circuit described in an input termination of described window comparator, the output of the second voltage sampling circuit described in another input termination of described window comparator.
5. a kind of uninterrupted power supply with fuse failure detector circuit as claimed in claim 1, is characterized in that: described warning circuit comprises light-emitting diode and buzzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520335136.8U CN204721015U (en) | 2015-05-22 | 2015-05-22 | A kind of uninterrupted power supply with fuse failure detector circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520335136.8U CN204721015U (en) | 2015-05-22 | 2015-05-22 | A kind of uninterrupted power supply with fuse failure detector circuit |
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| Publication Number | Publication Date |
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| CN204721015U true CN204721015U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520335136.8U Active CN204721015U (en) | 2015-05-22 | 2015-05-22 | A kind of uninterrupted power supply with fuse failure detector circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635557A (en) * | 2019-09-03 | 2019-12-31 | 科华恒盛股份有限公司 | Uninterruptible power supply and fuse fault detection method thereof |
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2015
- 2015-05-22 CN CN201520335136.8U patent/CN204721015U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110635557A (en) * | 2019-09-03 | 2019-12-31 | 科华恒盛股份有限公司 | Uninterruptible power supply and fuse fault detection method thereof |
| CN110635557B (en) * | 2019-09-03 | 2021-05-25 | 科华恒盛股份有限公司 | Uninterruptible power supply and fuse fault detection method thereof |
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