CN102053229A - Power detection device - Google Patents
Power detection device Download PDFInfo
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- CN102053229A CN102053229A CN 200910110462 CN200910110462A CN102053229A CN 102053229 A CN102053229 A CN 102053229A CN 200910110462 CN200910110462 CN 200910110462 CN 200910110462 A CN200910110462 A CN 200910110462A CN 102053229 A CN102053229 A CN 102053229A
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- 238000001514 detection method Methods 0.000 title claims abstract description 55
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000000052 comparative effect Effects 0.000 description 8
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Abstract
The invention discloses a power detection device. The power detection device comprises an indicator lamp and a detecting terminal, wherein a power voltage detection circuit is arranged between the indicator lamp and the detecting terminal, and comprises a comparison module, a logic module and an indication driving module which are connected with the detecting terminal in turn; output voltage is compared with a reference voltage through the comparison module; the logic module performs logic conversion on a signal which is transmitted from the comparison module; the indication driving module drives the indicator lamp according to a signal which is transmitted from the logic module; and a user can judge whether a power supply is qualified or not according to an on or off state of the indicator lamp. Thus, whether the power supply is qualified can be judged; the circuit of the power detection device is basically constructed by a triode, a resistor and a voltage comparator; the circuit has a simple structure; and the power detection device saves manufacturing cost better, is easy to operate and is more suitable for assembly line work.
Description
Technical field
The present invention relates to a kind of pick-up unit, relate in particular to a kind of power detector.
Background technology
The output voltage of available liquid crystal TV power supply is generally 12V, and general 5% the scope fluctuation that allows at this output voltage is to guarantee the normal operation of LCD TV.Also promptly, output voltage all belongs to substandard product less than 11.4V or greater than the power supply of 12.6V.Usually, need according to debugging specification power supply to be carried out the detection of output voltage pasted mainboard on the production line of power supply after, the device of existing test voltage is generally electronic multimeter, but its cost is higher, and complicated operation, is not suitable for pipelining.
In summary, the existing power supply pick-up unit obviously exists inconvenience and defective, so be necessary to be improved on reality is used.
Summary of the invention
At above-mentioned defective, the object of the present invention is to provide a kind of power detector, it can judge whether power supply is qualified, and circuit structure simply uses, and saves cost.
To achieve these goals, the invention provides a kind of power detector, be used to detect the output voltage stability of power supply, described power detector comprises pilot lamp and detection terminal, be provided with voltage detection circuit between described pilot lamp and the described detection terminal, described voltage detection circuit comprises the comparison module that is connected successively with described detection terminal, logic module and indication driver module, described comparison module is compared the output voltage of described power supply with a reference voltage, the signal that described logic module transmits described comparison module changes and carries out logical conversion, and the signal that described indication driver module transmits according to described logic module drives described pilot lamp.
According to power detector of the present invention, described power detector comprises the first/the second pilot lamp and first testing circuit that is connected with the first/the second pilot lamp respectively and second testing circuit.
According to power detector of the present invention, described the first/the second pilot lamp shows different light on and off states according to the difference of the output voltage of described power supply, and described output voltage is during greater than the high threshold set, and described first pilot lamp goes out, and described second pilot lamp is bright; Described output voltage is during less than the lowest threshold set, and described first pilot lamp is bright, and described second pilot lamp goes out.
According to power detector of the present invention, described output voltage is during greater than described high threshold, and described first pilot lamp is bright, and described second pilot lamp goes out; Described output voltage is during less than described lowest threshold, and described first pilot lamp goes out, and described second pilot lamp is bright.
According to power detector of the present invention, described output voltage is during less than described high threshold and greater than described lowest threshold, and described first pilot lamp and described second pilot lamp are normal bright or often go out.
According to power detector of the present invention, described first testing circuit comprises first voltage comparator, first triode, second triode, the 3rd triode and the 4th triode, the input end of described first voltage comparator is connected with described detection terminal by two divider resistances, the output terminal of first voltage comparator is connected with the base stage of described first triode, the collector of described first triode is connected with the base stage of second triode by a resistance, the collector of described second triode is connected with the base stage of the 3rd triode by a resistance, the collector of described the 3rd triode is connected with the base stage of the 4th triode, the collector utmost point of described the 4th triode is connected with the base stage of the 3rd triode by a resistance, and the collector of described the 4th triode is connected with described first pilot lamp.
According to power detector of the present invention, described second testing circuit comprises second voltage comparator, the 5th triode, the 6th triode and the 7th triode, the input end of described second voltage comparator is connected with described detection terminal by two divider resistances, output terminal is connected with the base stage of described the 5th triode, the collector of described the 5th triode is connected with the base stage of the 6th triode by a resistance, the collector of described the 6th triode is connected with the base stage of described the 7th triode, the collector of described the 7th triode is connected with the base stage of the 6th triode by a resistance, and the collector of described the 7th triode is connected with described second pilot lamp.
According to power detector of the present invention, described first triode, second triode, the 3rd triode, the 5th triode and the 6th triode are the NPN triode, and described the 4th triode and the 7th triode are the PNP triode.
According to power detector of the present invention, described pilot lamp is LED.
According to power detector of the present invention, described power supply is the power supply of LCD TV.
Power detector of the present invention comprises pilot lamp and detection terminal, be provided with voltage detection circuit between described pilot lamp and the described detection terminal, described voltage detection circuit comprises the comparison module that is connected successively with described detection terminal, logic module and indication driver module, by described comparison module described output voltage is compared with a reference voltage, produce a level signal and send to described logic module, described logic module carries out described level signal to send to described indication driver module after the logical conversion, the signal that described indication driver module transmits according to described logic module drives described pilot lamp, and the user judges according to the light on and off state of pilot lamp whether power supply is qualified.Whereby, the present invention can judge whether power supply is qualified, and circuit of the present invention built by triode, resistance and voltage comparator substantially, and circuit structure is simple, saves the cost of manufacture of power detector more, and is simple to operate, is fit to pipelining more.
Description of drawings
Fig. 1 is the principle assumption diagram of power detector of the present invention; And
The circuit diagram of a kind of embodiment of power detector of the present invention during Fig. 2.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
As depicted in figs. 1 and 2, a kind of power detector 100 of the present invention, the stability that is used for electric power output voltage, comprise detection terminal 10 and pilot lamp 50, detection terminal 10 is used for power detector 100 is connected with power lead, and pilot lamp 50 can show different light on and off states, is used to judge whether described output voltage is stable, and then judge whether power supply is qualified, pilot lamp 50 is LED.Be provided with voltage detection circuit between pilot lamp 50 and the detection terminal 10, described voltage detection circuit comprises the comparison module 20 that is connected successively with detection terminal 10, logic module 30 and indication driver module 40, comparison module 20 is compared described output voltage with a reference voltage, produce a level signal, and level signal sent to logic module 30, the level signal that logic module 30 transmits comparison module 20 is changeed and is carried out logical conversion, and the result of logical conversion sent to indication driver module 40, indication driver module 40 drives pilot lamp 50 according to the signal that logic module 30 transmits.Preferably, described power supply is the power supply of LCD TV.
As shown in Figure 2, power detector 100 comprises first testing circuit that is connected with the first pilot lamp D6215 and second testing circuit that is connected with the second pilot lamp D6216, during detection, first testing circuit contacts with tested power supply with Test-2 with the detection terminal Test-1 of second testing circuit simultaneously.As can be seen from Figure 2, circuit is built by triode, resistance and voltage comparator substantially, and circuit structure is simple, saves the cost of manufacture of power detector more, and is simple to operate, is fit to pipelining more.
As shown in Figure 2, detection terminal Test-1 is connected with the input end of first voltage comparator with R642 by divider resistance R641, the comparative voltage of another input end input 6V of first voltage comparator, the output terminal of first voltage comparator is connected with the base stage of the first triode V601, the collector of the first triode V601 is connected with the base stage of the second triode V602 by resistance R 616, the collector of the second triode V602 is connected with the base stage of the 3rd triode V603 by resistance R 615, the collector of the 3rd triode V603 is connected with the base stage of the 4th triode V604, the collector utmost point of the 4th triode V604 is connected with the base stage of the 3rd triode V603 by a resistance R 645, and the collector of the 4th triode V604 is connected with the first pilot lamp D6215.During detection, the output terminal of first voltage comparator produces a level signal, the logical circuit that the first triode V601, the second triode V602 and the 3rd triode V603 constitute carries out logical conversion to this level signal, the level signal of collector by the 3rd triode V603 after with conversion outputs to the base stage of the 4th triode V604 again, and the current collection of the 4th triode V604 very first pilot lamp D6215 provides driving voltage.
Equally, detection terminal Test-2 is connected with the input end of second voltage comparator with R644 by divider resistance R643, the comparative voltage of another input end input 6V of second voltage comparator, the output terminal of second voltage comparator is connected with the base stage of the 5th triode V605, the collector of the 5th triode V605 is connected with the base stage of the 6th triode V606 by a resistance R 617, the collector of the 6th triode V606 is connected with the base stage of the 7th triode V607, the collector of the 7th triode V607 is connected with the base stage of the 6th triode V606 by a resistance R 625, and the collector of described the 7th triode V607 is connected with the second pilot lamp D6216.During detection, the output terminal of second voltage comparator produces a level signal, the logical circuit that constitutes by triode V605 and V606 carries out logical conversion to this this level signal, the level signal of collector by triode V606 after with conversion outputs to the base stage of triode V607 again, and the current collection of the triode V607 very second pilot lamp D6216 provides driving voltage.
In circuit shown in Figure 2, the first triode V601, the second triode V602, the 3rd triode V603, the 5th triode V605 and the 6th triode V606 are the NPN triode, its collector is connected grounded emitter by resistance R 613, R611, R612, R614, R622 with a 5V power supply respectively.The 4th triode V604 and the 7th triode V607 are the PNP triode, and its emitter is connected with a 5V power supply respectively.The base stage of the 3rd triode V603 and the 6th triode V606 is respectively by resistance R 627 and R626 ground connection.
According to one embodiment of present invention, when the output voltage of power supply during, the first voltage comparator output low level greater than 11.4V, when the output voltage of power supply during less than 11.4V, first voltage comparator output high level; When the output voltage of power supply during, the second voltage comparator output low level greater than 12.6V, when the output voltage of power supply during less than 12.6V, second voltage comparator output high level.When carrying out circuit design, mainly different by the resistance configuration of divider resistance R642 and R641 and divider resistance R643 and R644, reach first voltage comparator and the logic state difference of second voltage comparator in different voltage range output.
The first pilot lamp D6215 and the different demonstrations different light on and off state of the second pilot lamp D6216 according to the output voltage of described power supply.According to the range size of electric power output voltage, pilot lamp light on and off state generally includes following three kinds.
When one, the output voltage of power supply is less than lowest threshold voltage 11.4V, the detection terminal Test-1 of first testing circuit carries out this output voltage to obtain the first detection voltage after the dividing potential drop through divider resistance R641 and R642, and detect voltage with first and send into first voltage comparator, first detects voltage less than comparative voltage 6V, then first voltage comparator is exported high level, the first triode V601 base stage is a high level, and current collection is low level very; The second triode V602 base stage is a low level, and current collection is high level very; The 3rd triode V603 base stage is a high level, and current collection is low level very; The 4th triode V604 base stage is a low level, collector output high level, and the first pilot lamp D6215 is bright.The detection terminal Test-2 of second testing circuit carries out the output voltage of power supply to obtain the second detection voltage after the dividing potential drop through divider resistance R643 and R644, and detect voltage with second and send into second voltage comparator, second detects voltage less than comparative voltage 6V, then second voltage comparator is exported high level, the 5th triode V605 base stage is a high level, and current collection is low level very; The 6th triode V606 base stage is a low level, and current collection is high level very; The 7th triode V607 base stage is a high level, the collector output low level, and the second pilot lamp D6216 goes out.
Also promptly when the output voltage of power supply during less than lowest threshold voltage 11.4V, the first pilot lamp D6215 is bright, and the second pilot lamp D6216 goes out.
When two, the output voltage of power supply is greater than high threshold voltage 12.6V, the detection terminal Test-1 of first testing circuit carries out this output voltage to obtain the first detection voltage after the dividing potential drop through divider resistance R641 and R642, and detect voltage with first and send into first voltage comparator, first detects voltage greater than comparative voltage 6V, the first voltage comparator output low level then, the first triode V601 base stage is a low level, and current collection is high level very; The second triode V602 base stage is a high level, and current collection is low level very; The 3rd V603 base stage is a low level, and current collection is high level very; The 4th triode V604 base stage is a high level, the collector output low level, and the first pilot lamp D6215 goes out.The detection terminal Test-2 of second testing circuit carries out the output voltage of power supply to obtain the second detection voltage after the dividing potential drop through divider resistance R643 and R644, and detect voltage with second and send into second voltage comparator, second detects voltage greater than comparative voltage 6V, the second voltage comparator output low level then, the 5th triode V605 base stage is a low level, and current collection is high level very; The 6th triode V606 base stage is a high level, and current collection is low level very; The 7th triode V607 base stage is a low level, collector output high level, and then the second pilot lamp D6216 is bright.
Also promptly when the output voltage of power supply during greater than high threshold voltage 12.6V, the first pilot lamp D6215 goes out, and the second pilot lamp D6216 is bright.
During when three, the output voltage of power supply is less than high threshold voltage 12.6V and greater than lowest threshold voltage 11.4V, the detection terminal Test-1 of first testing circuit carries out this output voltage to obtain the first detection voltage after the dividing potential drop through divider resistance R641 and R642, and detect voltage with first and send into first voltage comparator, first detects voltage greater than comparative voltage 6V, the first voltage comparator output low level then, the first triode V601 base stage is a low level, and current collection is high level very; The second triode V602 base stage is a high level, and current collection is low level very; The 3rd triode V603 base stage is a low level, and current collection is high level very; The 4th triode V604 base stage is a high level, the collector output low level, and then the first pilot lamp D6215 goes out.The detection terminal Test-2 of second testing circuit carries out the output voltage of power supply to obtain the second detection voltage after the dividing potential drop through divider resistance R643 and R644, and detect voltage with second and send into second voltage comparator, second detects voltage less than comparative voltage 6V, then second voltage comparator is exported high level, the 5th triode V605 base stage is a high level, and current collection is low level very; The 6th triode V606 base stage is a low level, and current collection is high level very; The 7th triode V607 base stage is a high level, the collector output low level, and then the second pilot lamp D6216 goes out.
Also promptly, the output voltage of power supply is during less than high threshold voltage 12.6V and greater than lowest threshold voltage 11.4V, and the first pilot lamp D6215 and the second pilot lamp D6216 often go out.
Obviously, can increase by a reverser in logic module, be preferably triode, the output voltage that makes power supply is during greater than high threshold 12.6V, and the first pilot lamp D6215 is bright, and the described second pilot lamp D6216 goes out; The output voltage of power supply is during less than lowest threshold 11.4V, and the first pilot lamp D6215 goes out, and the described second pilot lamp D6216 is bright; The output voltage of power supply is during less than high threshold voltage 12.6V and greater than lowest threshold voltage 11.4V the time, the first pilot lamp D6215 and the second pilot lamp D6216 Chang Liang.
In sum, power detector of the present invention comprises pilot lamp and detection terminal, be provided with voltage detection circuit between described pilot lamp and the described detection terminal, described voltage detection circuit comprises the comparison module that is connected successively with described detection terminal, logic module and indication driver module, by described comparison module described output voltage is compared with a reference voltage, produce a level signal and send to described logic module, described logic module carries out described level signal to send to described indication driver module after the logical conversion, the signal that described indication driver module transmits according to described logic module drives described pilot lamp, and the user judges according to the light on and off state of pilot lamp whether power supply is qualified.Whereby, the present invention can judge whether power supply is qualified, and circuit of the present invention built by triode, resistance and voltage comparator substantially, and circuit structure is simple, saves the cost of manufacture of power detector more, and is simple to operate, is fit to pipelining more.
Certainly; the present invention also can have other various embodiments; under the state that does not deviate from spirit of the present invention and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (9)
1. power detector, be used to detect the stability of electric power output voltage, it is characterized in that, described power detector comprises pilot lamp and detection terminal, be provided with voltage detection circuit between described pilot lamp and the described detection terminal, described voltage detection circuit comprises the comparison module that is connected successively with described detection terminal, logic module and indication driver module, described comparison module is compared the output voltage of described power supply with a reference voltage, the signal that described logic module transmits described comparison module changes and carries out logical conversion, and the signal that described indication driver module transmits according to described logic module drives described pilot lamp.
2. power detector according to claim 1 is characterized in that, described power detector comprises the first/the second pilot lamp and first testing circuit that is connected with the first/the second pilot lamp respectively and second testing circuit.
3. power detector according to claim 2, it is characterized in that described the first/the second pilot lamp shows different light on and off states according to the difference of the output voltage of described power supply, described output voltage is during greater than the high threshold set, described first pilot lamp goes out, and described second pilot lamp is bright;
Described output voltage is during less than the lowest threshold set, and described first pilot lamp is bright, and described second pilot lamp goes out.
4. power detector according to claim 2 is characterized in that, described output voltage is during greater than described high threshold, and described first pilot lamp is bright, and described second pilot lamp goes out; Described output voltage is during less than described lowest threshold, and described first pilot lamp goes out, and described second pilot lamp is bright.
5. according to claim 3 or 4 described power detectors, it is characterized in that described output voltage is during less than described high threshold and greater than described lowest threshold, described first pilot lamp and described second pilot lamp are normal bright or often go out.
6. power detector according to claim 2, it is characterized in that, described first testing circuit comprises first voltage comparator, first triode, second triode, the 3rd triode and the 4th triode, the input end of described first voltage comparator is connected with described detection terminal by two divider resistances, the output terminal of first voltage comparator is connected with the base stage of described first triode, the collector of described first triode is connected with the base stage of second triode by a resistance, the collector of described second triode is connected with the base stage of the 3rd triode by a resistance, the collector of described the 3rd triode is connected with the base stage of the 4th triode, the collector utmost point of described the 4th triode is connected with the base stage of the 3rd triode by a resistance, and the collector of described the 4th triode is connected with described first pilot lamp.
7. power detector according to claim 2, it is characterized in that, described second testing circuit comprises second voltage comparator, the 5th triode, the 6th triode and the 7th triode, the input end of described second voltage comparator is connected with described detection terminal by two divider resistances, output terminal is connected with the base stage of described the 5th triode, the collector of described the 5th triode is connected with the base stage of the 6th triode by a resistance, the collector of described the 6th triode is connected with the base stage of described the 7th triode, the collector of described the 7th triode is connected with the base stage of the 6th triode by a resistance, and the collector of described the 7th triode is connected with described second pilot lamp.
8. power detector according to claim 1 is characterized in that, described pilot lamp is LED.
9. power detector according to claim 1 is characterized in that, described power supply is the power supply of LCD TV.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910110462 CN102053229A (en) | 2009-11-02 | 2009-11-02 | Power detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910110462 CN102053229A (en) | 2009-11-02 | 2009-11-02 | Power detection device |
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| CN102053229A true CN102053229A (en) | 2011-05-11 |
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| CN 200910110462 Pending CN102053229A (en) | 2009-11-02 | 2009-11-02 | Power detection device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487765A (en) * | 2012-06-13 | 2014-01-01 | 上海唐盛信息科技有限公司 | Testing device for maintaining optical transmission device power module |
| CN104101772A (en) * | 2013-04-08 | 2014-10-15 | 中国长城计算机深圳股份有限公司 | PG signal testing apparatus |
| CN107888448A (en) * | 2017-11-01 | 2018-04-06 | 深圳市共进电子股份有限公司 | Reverse power supply detection means and method |
| CN109633480A (en) * | 2018-12-03 | 2019-04-16 | 天津津航计算技术研究所 | Power module detecting tool and method |
| CN109814045A (en) * | 2017-11-17 | 2019-05-28 | 中兴通讯股份有限公司 | A kind of device and method for testing optical interface |
| CN110716151A (en) * | 2018-10-23 | 2020-01-21 | 合肥沛睿微电子股份有限公司 | Electronic equipment with power quality detection module and related method thereof |
| CN111148327A (en) * | 2019-12-31 | 2020-05-12 | 广州皓醒湾科技有限公司 | Charging indicator lamp control device and method |
-
2009
- 2009-11-02 CN CN 200910110462 patent/CN102053229A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487765A (en) * | 2012-06-13 | 2014-01-01 | 上海唐盛信息科技有限公司 | Testing device for maintaining optical transmission device power module |
| CN103487765B (en) * | 2012-06-13 | 2016-04-06 | 上海唐盛信息科技有限公司 | A kind of proving installation keeping in repair optical transmission device power module |
| CN104101772A (en) * | 2013-04-08 | 2014-10-15 | 中国长城计算机深圳股份有限公司 | PG signal testing apparatus |
| CN104101772B (en) * | 2013-04-08 | 2016-12-28 | 中国长城计算机深圳股份有限公司 | A kind of PG signal-testing apparatus |
| CN107888448A (en) * | 2017-11-01 | 2018-04-06 | 深圳市共进电子股份有限公司 | Reverse power supply detection means and method |
| CN107888448B (en) * | 2017-11-01 | 2020-04-24 | 深圳市共进电子股份有限公司 | Reverse power supply detection device and method |
| CN109814045A (en) * | 2017-11-17 | 2019-05-28 | 中兴通讯股份有限公司 | A kind of device and method for testing optical interface |
| CN110716151A (en) * | 2018-10-23 | 2020-01-21 | 合肥沛睿微电子股份有限公司 | Electronic equipment with power quality detection module and related method thereof |
| CN109633480A (en) * | 2018-12-03 | 2019-04-16 | 天津津航计算技术研究所 | Power module detecting tool and method |
| CN109633480B (en) * | 2018-12-03 | 2021-01-26 | 天津津航计算技术研究所 | Power module detection tool and method |
| CN111148327A (en) * | 2019-12-31 | 2020-05-12 | 广州皓醒湾科技有限公司 | Charging indicator lamp control device and method |
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Application publication date: 20110511 |