CN102288809A - Voltmeter for measuring generating set - Google Patents
Voltmeter for measuring generating set Download PDFInfo
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- CN102288809A CN102288809A CN2011101855268A CN201110185526A CN102288809A CN 102288809 A CN102288809 A CN 102288809A CN 2011101855268 A CN2011101855268 A CN 2011101855268A CN 201110185526 A CN201110185526 A CN 201110185526A CN 102288809 A CN102288809 A CN 102288809A
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Abstract
The invention discloses a voltmeter for measuring a generating set. The voltmeter comprises a voltage input end, a mean value sampling circuit, a first window comparator, a second window comparator, a third window comparator, first display equipment, second display equipment and third display equipment, wherein the voltage input end is connected with the mean value sampling circuit; the mean value sampling circuit is connected with the first window comparator, the second window comparator and the third window comparator respectively; the first window comparator is connected with the first display equipment; the second window comparator is connected with the second display equipment; and the third window comparator is connected with the third display equipment. Whether output voltage of the generating set is undervoltage, overvoltage or normal is judged through the three window comparators, and the voltage is output to the display equipment; therefore, a user more intuitively knows the current voltage conditions; moreover, for a nonprofessional user who does not know whether the current voltage is safe voltage, possible dangers in measurement can be avoided.
Description
Technical field
The present invention relates to a kind of voltage table, in particular, relate to a kind of voltage table that is applicable to genset and safe range that can measuring voltage.
Background technology
Genset needs the instant measuring voltage of voltage table usually, overvoltage or unsafe situation such as under-voltage occur to avoid cluster engine.Existing voltage table mainly comprises pointer voltage table and digital voltmeter, and these two kinds of voltage tables all can be realized the voltage detecting to cluster engine.
In research and practice process to prior art, the present inventor finds that there is following problem in prior art:
Existing voltage table is merely able to show the current voltage of cluster engine, and can't make the user get information about current voltage is overvoltage, under-voltage or normal, so the display effect of existing voltage table is not directly perceived, is not easy to the user genset is debugged work accordingly.And, whether be the unprofessional user of safe voltage for unclear current voltage, can't recognize whether the voltage of cluster engine is normal, is breakneck by voltage table.
Therefore, it is directly perceived how to make a kind of display effect, can demonstrate the voltage table of safe range, becomes the problem that needs most solution at present.
Summary of the invention
In view of this, purpose of design of the present invention is, provides a kind of display effect directly perceived, can demonstrate the voltage table of safe range.
The embodiment of the invention is achieved in that
A kind of voltage table that is used to measure genset comprises voltage input end, mean value sample circuit, first window comparator, second window comparator, the 3rd window comparator, first display device, second display device and the 3rd display device;
Wherein, described voltage input end links to each other with described mean value sample circuit, described mean value sample circuit links to each other with first window comparator, second window comparator and the 3rd window comparator respectively, described first window comparator links to each other with first display device, described second window comparator links to each other with second display device, and described the 3rd window comparator links to each other with the 3rd display device;
Described voltage input end is used to obtain the voltage signal of described genset;
Described mean value sample circuit is used to obtain the mean value of described voltage signal;
Described first window comparator is used for starting described first display device when the mean value of described voltage signal is in default under-voltage scope;
Described second window comparator is used for starting described second display device when the mean value of described voltage signal is in default safe range;
Described the 3rd window comparator is used for starting described the 3rd display device when the mean value of described voltage signal is in default overvoltage region.
Preferably, measure the voltage table of genset, also comprise the hysteresis loop comparator that a plurality of and described mean value sample circuit is connected in above-mentioned being used for, and the display device that is connected of a plurality of and described hysteresis loop comparator.
Preferably, measure the voltage table of genset in above-mentioned being used for, the quantity of described hysteresis loop comparator is specially 6.
Preferably, measure the voltage table of genset in above-mentioned being used for, also comprise signal transformation circuit, described voltage input end links to each other with described mean value sample circuit by signal transformation circuit;
Described signal transformation circuit is used for eliminating the undesired signal of the voltage signal that described voltage input end transmits.
Preferably, measure the voltage table of genset, also comprise the power supply that is connected with described voltage input end in above-mentioned being used for;
Described power supply is connected with described first window comparator, second window comparator, the 3rd window comparator, first display device, second display device and the 3rd display device respectively.
Preferably, measure the voltage table of genset in above-mentioned being used for, described display device is specially pilot lamp.
Preferably, measure the voltage table of genset in above-mentioned being used for, described display device is specially LCDs.
Compared with prior art, the technical scheme that provides of present embodiment has the following advantages and characteristics:
In scheme provided by the invention, determine that by three window comparators the voltage of cluster engine output is under-voltage, overvoltage or normal, and output on the display device, thereby make the user get more information about the situation of current voltage; And, whether be the unprofessional user of safe voltage for unclear current voltage, the use that the present invention can more convenient user is avoided causing danger.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of module map that is used to measure the voltage table of genset provided by the present invention;
Fig. 2 is used to measure the module map of the voltage table of genset for another kind provided by the present invention;
Fig. 3 for provided by the present invention another be used to measure the module map of the voltage table of genset;
Fig. 4 for provided by the present invention another be used to measure the module map of the voltage table of genset.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of voltage table that is used to measure genset, comprises voltage input end, mean value sample circuit, first window comparator, second window comparator, the 3rd window comparator, first display device, second display device and the 3rd display device.Because there is multiple mode in the specific implementation of above-mentioned voltage table, is elaborated below by specific embodiment:
See also shown in Figure 1, shown in Figure 1 is a kind of voltage table that is used to measure genset, comprises voltage input end 1, mean value sample circuit 3, first window comparator 4, second window comparator 5, the 3rd window comparator 6, first display device 7, second display device 8 and the 3rd display device 9.Wherein, described voltage input end 1 links to each other with described mean value sample circuit 3, described mean value sample circuit 3 links to each other with the 3rd window comparator 6 with first window comparator 4, second window comparator 5 respectively, described first window comparator 4 links to each other with first display device 7, described second window comparator 5 links to each other with second display device 8, and described the 3rd window comparator 6 links to each other with the 3rd display device 9; Described voltage input end 1 is used to obtain the voltage signal of described genset; Described mean value sample circuit 3 is used to obtain the mean value of described voltage signal; Described first window comparator 4 is used for starting described first display device 7 when the mean value of described voltage signal is in default under-voltage scope; Described second window comparator 5 is used for starting described second display device 8 when the mean value of described voltage signal is in default safe range; Described the 3rd window comparator 6 is used for starting described the 3rd display device 9 when the mean value of described voltage signal is in default overvoltage region.
In the embodiment shown in fig. 1, each window comparator is provided with two threshold voltages, so when the output voltage of cluster engine was in these two threshold voltage ranges, so Dui Ying window comparator will start and is attached thereto the display device that connects, thereby demonstrates current voltage status.
The principle of work of the embodiment of the invention is described below by example:
Because in the cluster engine of reality detected, it was different that the difference of each area or motor type can cause concrete safe voltage scope, so the output voltage of following hypothesis cluster engine in the 0-150V scope time, belongs to under-voltage scope; In the time of in the 150-260V scope, belong to the voltage normal range; In the time of in the 260-380V scope, belong to overvoltage region.Two threshold values of window comparator all can be provided with before test, suppose that the staff is 0-150V with two threshold voltage settings of first window comparator 4, with two threshold voltage settings of second window comparator 5 is 150-260V, is 260-380V with two threshold voltage settings of the 3rd window comparator 6.
When the output voltage of test engine group, the output voltage of cluster engine can enter by the voltage input end 1 of voltage table in the mean value sample circuit 3, mean value sample circuit 3 can obtain average value of output voltage, then this average value of output voltage is sent to respectively in three window comparators, these three window comparators can judge respectively that the voltage of input is whether in two voltage threshold scopes separately.If the mean value of current output voltage is 200V, then this magnitude of voltage has dropped in two threshold voltages of second window comparator 5, so second window comparator 5 can start second display device 8, with the output voltage of explanation present engine group in safe range; If the mean value of current output voltage is 130V, then this magnitude of voltage has dropped in two threshold voltages of first window comparator 4, so first window comparator 4 can start first display device 7, with the output voltage of explanation present engine group in under-voltage scope.
In sum, among the embodiment provided by the invention, determine that by three window comparators the voltage of cluster engine output is under-voltage, overvoltage or normal, and output on the display device, thereby make the user get more information about the situation of current voltage; And, whether be the unprofessional user of safe voltage for unclear current voltage, the use that present embodiment can more convenient user is avoided causing danger.
It is identical substantially with voltage table shown in Figure 1 to see also voltage table shown in Figure 2, shown in Figure 2, and its difference is also to comprise signal transformation circuit 2, and wherein, voltage input end 1 links to each other with mean value sample circuit 3 by signal transformation circuit 2.In the present embodiment, the purpose that adds signal transformation circuit 2 is in order to eliminate the undesired signal in the voltage signal that voltage input end 1 transmits, thereby the mean value that guarantees the voltage signal that mean value sample circuit 3 is measured is more accurate.
See also shown in Figure 3, embodiment shown in Figure 3 is on the basis of Fig. 2 embodiment, a plurality of hysteresis loop comparators that are connected with mean value sample circuit 3 have been increased, and the display device that is connected of a plurality of and described hysteresis loop comparator, because hysteresis loop comparator is more with the quantity that is attached thereto the display device that connects, space among the figure is limited, so do not add hysteresis loop comparator and the Reference numeral that is attached thereto the display device that connects in the drawings.Wherein, the quantity of hysteresis loop comparator can be set according to actual needs, thus the present invention the concrete quantity of hysteresis loop comparator is not limited, but for principle of work of the present invention is described, existing quantity with hysteresis loop comparator is preferably 6.
In the embodiment shown in fig. 3, because the normal range of the output voltage of cluster engine is too in broadness, so that can't recognizing current voltage, the user specifically goes up where, thereby present embodiment is provided with a plurality of hysteresis loop comparators in voltage table, so that the voltage security scope division is become a plurality of intervals, be convenient to the user and check.Suppose 6 hysteresis loop comparators are set in the voltage security scope, be respectively first hysteresis loop comparator, second hysteresis loop comparator, the 3rd hysteresis loop comparator, the 4th hysteresis loop comparator, the 5th hysteresis loop comparator and the 6th hysteresis loop comparator.The threshold voltage of supposing first hysteresis loop comparator is 30V, the threshold voltage of second hysteresis loop comparator is 150V, the threshold voltage of the 3rd hysteresis loop comparator is 180V, the threshold voltage of the 4th hysteresis loop comparator is 200V, the threshold voltage of the 5th hysteresis loop comparator is 230V, and the threshold voltage of the 6th hysteresis loop comparator is 260V.
Below by instantiation, come the principle of work after the account for voltage table adds hysteresis loop comparator:
See also shown in Figure 4, suppose that the display device that is connected with hysteresis loop comparator is a tri-colour LED, when the output voltage that detects genset at 30V when the 150V, first hysteresis loop comparator can be controlled the first pilot lamp glassy yellow that is attached thereto, first window comparator can be controlled the first display device glassy yellow that is attached thereto, and expression voltage is under-voltage condition;
When the output voltage that detects genset at 150V when the 180V, the first pilot lamp bright green that the control of first hysteresis loop comparator is attached thereto, the second pilot lamp bright green that the control of second hysteresis loop comparator is attached thereto, second window comparator can be controlled the second display device bright green that is attached thereto, and expression voltage is normal condition;
When the output voltage that detects genset at 180V when the 200V, the first pilot lamp bright green that the control of first hysteresis loop comparator is attached thereto, the second pilot lamp bright green that the control of second hysteresis loop comparator is attached thereto, the 3rd pilot lamp bright green that the control of the 3rd hysteresis loop comparator is attached thereto, second window comparator can be controlled the second display device bright green that is attached thereto, and expression voltage is normal condition;
When the output voltage that detects genset at 200V when the 230V, the first pilot lamp bright green that the control of first hysteresis loop comparator is attached thereto, the second pilot lamp bright green that the control of second hysteresis loop comparator is attached thereto, the 3rd pilot lamp bright green that the control of the 3rd hysteresis loop comparator is attached thereto, the 4th pilot lamp bright green that the control of the 4th hysteresis loop comparator is attached thereto, second window comparator can be controlled the second display device bright green that is attached thereto, and expression voltage is normal condition;
When the output voltage that detects genset at 230V when the 260V, the first pilot lamp bright green that the control of first hysteresis loop comparator is attached thereto, the second pilot lamp bright green that the control of second hysteresis loop comparator is attached thereto, the 3rd pilot lamp bright green that the control of the 3rd hysteresis loop comparator is attached thereto, the 4th pilot lamp bright green that the control of the 4th hysteresis loop comparator is attached thereto, the 5th pilot lamp bright green that the control of the 5th hysteresis loop comparator is attached thereto, second window comparator can be controlled the second display device bright green that is attached thereto, and expression voltage is normal condition;
When the output voltage that detects cluster engine during greater than 260V, the first pilot lamp shiny red that the control of first hysteresis loop comparator is attached thereto, the second pilot lamp shiny red that the control of second hysteresis loop comparator is attached thereto, the 3rd pilot lamp shiny red that the control of the 3rd hysteresis loop comparator is attached thereto, the 4th pilot lamp shiny red that the control of the 4th hysteresis loop comparator is attached thereto, the 5th pilot lamp shiny red that the control of the 5th hysteresis loop comparator is attached thereto, the 6th pilot lamp shiny red that the control of the 6th hysteresis loop comparator is attached thereto, the 3rd window comparator can be controlled the 3rd display device bright green that is attached thereto, and expression voltage is overvoltage condition;
When if the output voltage of present engine group is 190V, first, second and third pilot lamp and second display device give a green light so; When if the output voltage of front engine group is 280V, so first, second, third and fourth, five, six pilot lamp and the 3rd display device send out a warning; When if the output voltage of present engine group is 20V, so first, second, third and fourth, five, six pilot lamp all do not work, and the bright orange lamp of first display device.
In addition, for the display device of mentioning in the foregoing description, both can be pilot lamp, also can be for being LCDs, perhaps can be the display of other types, the purpose that display device is set mainly is that the user recognizes the scope of the output voltage of current cluster engine for convenience, so can dispose voluntarily according to user's demand for the configuration of display device, because display device becomes the technology of well known to a person skilled in the art already, so do not repeat them here.
Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. voltage table that is used to measure genset, it is characterized in that, comprise voltage input end, mean value sample circuit, first window comparator, second window comparator, the 3rd window comparator, first display device, second display device and the 3rd display device;
Wherein, described voltage input end links to each other with described mean value sample circuit, described mean value sample circuit links to each other with first window comparator, second window comparator and the 3rd window comparator respectively, described first window comparator links to each other with first display device, described second window comparator links to each other with second display device, and described the 3rd window comparator links to each other with the 3rd display device;
Described voltage input end is used to obtain the voltage signal of described genset;
Described mean value sample circuit is used to obtain the mean value of described voltage signal;
Described first window comparator is used for starting described first display device when the mean value of described voltage signal is in default under-voltage scope;
Described second window comparator is used for starting described second display device when the mean value of described voltage signal is in default safe range;
Described the 3rd window comparator is used for starting described the 3rd display device when the mean value of described voltage signal is in default overvoltage region.
2. the voltage table that is used to measure genset according to claim 1 is characterized in that, also comprises the hysteresis loop comparator that a plurality of and described mean value sample circuit is connected, and the display device that is connected of a plurality of and described hysteresis loop comparator.
3. the voltage table that is used to measure genset according to claim 2 is characterized in that, the quantity of described hysteresis loop comparator is specially 6.
4. the voltage table that is used to measure genset according to claim 1 is characterized in that, also comprises signal transformation circuit, and described voltage input end links to each other with described mean value sample circuit by signal transformation circuit;
Described signal transformation circuit is used for eliminating the undesired signal of the voltage signal that described voltage input end transmits.
5. the voltage table that is used to measure genset according to claim 1 is characterized in that, also comprises the power supply that is connected with described voltage input end;
Described power supply is connected with described first window comparator, second window comparator, the 3rd window comparator, first display device, second display device and the 3rd display device respectively.
6. according to any described voltage table that is used to measure genset of claim 1-5, it is characterized in that described display device is specially pilot lamp.
7. according to any described voltage table that is used to measure genset of claim 1-5, it is characterized in that described display device is specially LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101855268A CN102288809A (en) | 2011-07-04 | 2011-07-04 | Voltmeter for measuring generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101855268A CN102288809A (en) | 2011-07-04 | 2011-07-04 | Voltmeter for measuring generating set |
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| Publication Number | Publication Date |
|---|---|
| CN102288809A true CN102288809A (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101855268A Pending CN102288809A (en) | 2011-07-04 | 2011-07-04 | Voltmeter for measuring generating set |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487766A (en) * | 2012-06-07 | 2014-01-01 | 阿斯科动力科技公司 | Methods and systems for monitoring a power supply for a fire pump motor |
| CN104090152A (en) * | 2014-06-16 | 2014-10-08 | 福建睿能科技股份有限公司 | Power failure detection circuit of flat knitting machine and power failure detection method thereof |
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| US3813667A (en) * | 1973-05-29 | 1974-05-28 | Us Navy | Three-phase power disturbance monitor |
| CN2533472Y (en) * | 2001-12-14 | 2003-01-29 | 艾默生网络能源有限公司 | AC three-phase voltage monitor |
| CN1548965A (en) * | 2003-05-07 | 2004-11-24 | 中兴通讯股份有限公司 | AC voltage under-voltage detecting circuit |
| CN101048925A (en) * | 2004-10-27 | 2007-10-03 | 麦斯韦尔技术股份有限公司 | Voltage monitoring for connected electrical energy storage cells |
| CN101316050A (en) * | 2007-12-26 | 2008-12-03 | 上海市电力公司超高压输变电公司 | Method and device for monitoring running state of transforming station direct current system |
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2011
- 2011-07-04 CN CN2011101855268A patent/CN102288809A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813667A (en) * | 1973-05-29 | 1974-05-28 | Us Navy | Three-phase power disturbance monitor |
| CN2533472Y (en) * | 2001-12-14 | 2003-01-29 | 艾默生网络能源有限公司 | AC three-phase voltage monitor |
| CN1548965A (en) * | 2003-05-07 | 2004-11-24 | 中兴通讯股份有限公司 | AC voltage under-voltage detecting circuit |
| CN101048925A (en) * | 2004-10-27 | 2007-10-03 | 麦斯韦尔技术股份有限公司 | Voltage monitoring for connected electrical energy storage cells |
| CN101316050A (en) * | 2007-12-26 | 2008-12-03 | 上海市电力公司超高压输变电公司 | Method and device for monitoring running state of transforming station direct current system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103487766A (en) * | 2012-06-07 | 2014-01-01 | 阿斯科动力科技公司 | Methods and systems for monitoring a power supply for a fire pump motor |
| CN104090152A (en) * | 2014-06-16 | 2014-10-08 | 福建睿能科技股份有限公司 | Power failure detection circuit of flat knitting machine and power failure detection method thereof |
| CN104090152B (en) * | 2014-06-16 | 2017-05-17 | 福建睿能科技股份有限公司 | Power failure detection circuit of flat knitting machine and power failure detection method thereof |
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Application publication date: 20111221 |