CN101441250A - Electric generator detection system and apparatus - Google Patents
Electric generator detection system and apparatus Download PDFInfo
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- CN101441250A CN101441250A CNA2007101709570A CN200710170957A CN101441250A CN 101441250 A CN101441250 A CN 101441250A CN A2007101709570 A CNA2007101709570 A CN A2007101709570A CN 200710170957 A CN200710170957 A CN 200710170957A CN 101441250 A CN101441250 A CN 101441250A
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Abstract
The invention discloses a generator detection system, which comprises sequentially connected transducer, variable-frequency motor and generator, direct current power source supplying power for the generator, a voltage display unit for displaying voltage value, a current display unit for displaying current value and a variable resistance; wherein the current display unit is connected with the variable resistance in series, the voltage display unit is connected with a series circuit in parallel, and the external connecting pins of a parallel circuit are respectively connected with the output end of the generator. The generator detection system provided by the invention, which can conveniently detect the output current value of the generator to be detected, has the advantages of simple structure, convenient operation, easy maintenance, etc. In addition, when the system provided by the invention is used for detecting the current output value of the generator, the control precision is high. The invention further discloses a generator detection device.
Description
Technical field
The present invention relates to the technical field of Equipment Inspection, relate in particular to a kind of electric generator detection system and device.
Background technology
In port traffic and vehicle concentrated area, the failure rate of generator is very big.After each generator maintenance, usually detect some key property indexs of generator with various tool by the maintenance personal, as meet the requirement of to generate electricity, just think that generator fixes, reinstall former car test and test, as still can not normal power generation, often want repeated disassembled and assembled, very inconvenient, cause inefficiency, the big and influence production of maintenance personal's labour intensity.
Existing a kind of pilot channel generator, its circuit structure as shown in Figure 1.Whether utilize this pilot channel generator can test out generator easily normal.Pilot channel generator shown in Figure 1 is made of the reometer 7 and the load lamp 8 of the electric current that main power switch 1, the motor 2 that drive testing generator 5 rotates, adjustable power of direct current 3, the charge fault pilot lamp 4 to the dynamo field coil power supply, the voltage table 6 that shows the voltage that generator sends, demonstration generator send.
Main power switch 1 is to motor 2, adjustable power of direct current 3 power supplies, and to the dynamo field coil power supply, testing generator 5 rotates generating to adjustable power of direct current 3 under the drive of motor 2 by charge fault pilot lamp 4.Load lamp 8 is bright, and voltage table 6, reometer 7 have normal reading, and charge fault pilot lamp 4 does not work at this moment, illustrates that testing generator 5 is normal, non-fault; If load lamp 8 do not work, charge fault pilot lamp 4 is bright, and voltage table 6, reometer 7 readings are undesired, illustrates that testing generator 5 has fault, need to keep in repair.
Utilize pilot channel generator shown in Figure 1,, can't detect more parameter though whether can test generator easily normal.For example, utilize this pilot channel generator can't detect the output current value of testing generator.
Summary of the invention
In view of this, the technical matters that the present invention solves provides a kind of electric generator detection system, utilizes this system can detect the output current value of testing generator easily.
In addition, the present invention also provides a kind of corresponding generator detection device.
For this reason, technical scheme provided by the invention is as follows:
A kind of electric generator detection system comprises the frequency converter, variable-frequency motor and the generator that connect successively, is the direct supply of generator powered, is used for the voltage display unit of display voltage value, is used to show the current displaing unit and the variable resistor of current value;
Described current displaing unit and the series connection of described variable resistor, described voltage display unit is in parallel with described series circuit, and the external link of described parallel circuit connects with the output terminal of generator respectively.
In certain embodiments, also be parallel with at described variable-resistance two ends and be used for shunt assembly that the electric current on the variable resistor is shunted.
In certain embodiments, on the branch road at described shunt assembly place, also be in series with switch block, be used for selecting whether to carry out in parallel with described variable resistor described shunt assembly.
In certain embodiments, described shunt assembly comprises: resistance, bulb and miniature bulb group.
In certain embodiments, described voltage display unit comprises voltage table.
In certain embodiments, described current displaing unit comprises reometer.
In certain embodiments, described variable resistor comprises slider type rheostat.
The present invention also provides a kind of generator detection device, and this device comprises: be used for the display voltage value the voltage display unit, be used to show the current displaing unit and the variable resistor of current value;
Described current displaing unit and the series connection of described variable resistor, described voltage display unit is in parallel with described series circuit;
The external link of described parallel circuit is connected with the output terminal of generator respectively.
In certain embodiments, also be parallel with at described variable-resistance two ends and be used for shunt assembly that the electric current on the variable resistor is shunted.
In certain embodiments, on the branch road at described shunt assembly place, also be in series with switch block, be used for selecting whether to carry out in parallel with described variable resistor described shunt assembly.
In electric generator detection system provided by the invention, the voltage display unit is used to show the voltage output value of testing generator, current displaing unit is used to show the current output value of testing generator, regulate variable resistor and can change the load of testing generator, thereby reach the purpose of adjusting generator output voltage.Under the state of power connection,, can make Frequency Converter Control variable-frequency motor drawing generator by multiple rotational speed by the manual button of pressing frequency converter.Under every kind of speed conditions,, the output voltage of generator can be adjusted to 13.5V by regulating variable resistor.When the voltage of voltage display unit demonstration was 13.5V, the shown current value of current displaing unit was the output current value of generator.As can be seen, utilize electric generator detection system provided by the invention, not only can detect the output current value of testing generator easily, and this system also have simple in structure, easy to operate, many advantages such as be easy to safeguard.In addition, utilize system provided by the invention, when detecting the current output value of generator, control accuracy is also very high, and the tachometric survey precision can reach 1 class precision, and the current measurement precision can be accurate to 0.01 ampere (A).
Description of drawings
Fig. 1 is the circuit structure diagram of existing pilot channel generator;
Fig. 2 is the synoptic diagram of first embodiment provided by the invention;
Fig. 3 is the synoptic diagram of second embodiment provided by the invention;
Fig. 4 is the synoptic diagram of the 3rd embodiment provided by the invention.
Embodiment
According to the regulation in QC/T29094-1992 " motorcar alternator technical conditions " standard, and the regulation among the QC/T424-1999 " motorcar alternator electrical specification test method ", utilize generator detection device provided by the invention should be able to detect the cold conditions current output value and the hot current output value of generator.
Here need to prove also that the current output value of described generator is meant, the current output value of generator when its voltage output value is 13.5V.
For making those skilled in the art understand the present invention better, below in conjunction with specific embodiment generator detection device provided by the invention is specified, Fig. 2 is the structural representation of this device.
In Fig. 2, frequency converter, variable-frequency motor and generator connect successively, and direct supply is used to generator that the power supply of initial operation is provided.In device shown in Figure 2, comprise voltage display unit S22, current displaing unit S21 and variable resistor S23.
Current displaing unit S21 and variable resistor S23 series connection form a series circuit.Voltage display unit S22 is in parallel with described series circuit.The external link of described parallel circuit is connected with the two-way output terminal of generator respectively.
Wherein, voltage display unit S22 is used to show the voltage output value of testing generator, current displaing unit S21 is used to show the current output value of testing generator, regulates variable resistor S23 and can change the load of testing generator, thereby reach the purpose of adjusting generator output voltage.Voltage display unit S22 can but to be not limited to be voltage table, current displaing unit S21 can but to be not limited to be reometer, variable resistor S23 can but to be not limited to be slider type rheostat.
Under the state of power connection,, can make Frequency Converter Control variable-frequency motor drawing generator by multiple rotational speed by the manual button of pressing frequency converter.For example: can make Frequency Converter Control variable-frequency motor drawing generator by 1500 rev/mins (r/min), three kinds of rotational speed of 3000r/min, 6000r/min.
Under every kind of speed conditions,, the output voltage of generator can be adjusted to 13.5V by regulating variable resistor S23.When the voltage of voltage display unit S22 demonstration was 13.5V, the shown current value of current displaing unit S21 was the output current value of generator.
At the beginning of test, adopt device provided by the invention, detecting the current output value that obtains under the various rotating speeds of generator is the cold conditions current output value of generator.
After the cold conditions current output value detect to finish, make generator operation a period of time, for example can make generator with the rotation speed operation of 3000r/min 30 minutes.Then, utilize device provided by the invention once more, repeat above method, detect the current output value of generator under various rotating speeds, detect the hot current output value that the current output value that obtains is generator.
As can be seen, utilize generator detection device shown in Figure 2, not only can detect the output current value of testing generator easily, and this system also have simple in structure, easy to operate, many advantages such as be easy to safeguard.
Here also need to prove,, therefore variable resistor S23 might be burnt out because the electric current that generator produces in the running may be very big., the electric current of the variable resistor S23 that flows through can be shunted, with the electric current of the variable resistor S23 that reduces to flow through for this reason.
Fig. 3 shows another kind of generator detection device.Compare with device shown in Figure 2, in device shown in Figure 3, also be parallel with shunt assembly S31, be used for the electric current on the variable resistor S23 is shunted at the two ends of variable resistor S23.Shunt assembly S31 both can be the resistance of a big resistance, also can be the bulb with big resistance, perhaps can also be one group of miniature bulb.
If utilize the miniature bulb group, then when described device carries out work, also, show the shunting action of miniature bulb group to give operating personnel with clear and definite indication as shunt assembly.
As can be seen, compare with device shown in Figure 2, owing to increased shunt assembly S31, device shown in Figure 3 will be more stable, and variable resistor is also longer serviceable life.
Fig. 4 shows another kind of generator detection device.Compare with device shown in Figure 3, in device shown in Figure 4, on the branch road at shunt assembly S31 place, also be in series with switch block S41, by opening or Closing Switch parts S41 can determine whether carry out in parallel with variable resistor S23 shunt assembly S31.
As can be seen, Fig. 2, device shown in Figure 3, its use-pattern has only a kind of, and device shown in Figure 4, owing to increase switch S 41, its use-pattern becomes two kinds.Like this, operating personnel just can be according to the size of generator output current when practical operation, and whether decision needs the electric current on the variable resistor S23 is shunted, and correspondingly select to open or Closing Switch S41, thereby can select whether to carry out in parallel with variable resistor shunt assembly.Therefore, than Fig. 2, device shown in Figure 3, device shown in Figure 4 uses more flexible.
Need to prove, in Fig. 2, Fig. 3 and Fig. 4, show three kinds of devices provided by the invention.Those skilled in the art combine these 3 kinds devices respectively fully as can be seen with frequency converter, variable-frequency motor, generator and direct supply, just can obtain corresponding 3 kinds of electric generator detection systems.
In electric generator detection system provided by the invention, comprise the frequency converter, variable-frequency motor and the generator that connect successively, direct supply, voltage display unit, current displaing unit and variable resistor.
Described current displaing unit and the series connection of described variable resistor, described voltage display unit is in parallel with described series circuit, and the external link of described parallel circuit connects with the output terminal of generator respectively.
Wherein, the voltage display unit is used to show the voltage output value of testing generator, current displaing unit is used to show the current output value of testing generator, regulates variable resistor and can change the load of testing generator, thereby reach the purpose of adjusting generator output voltage.
Under the state of power connection,, can make Frequency Converter Control variable-frequency motor drawing generator by multiple rotational speed by the manual button of pressing frequency converter.Under every kind of speed conditions,, the output voltage of generator can be adjusted to 13.5V by regulating variable resistor.When the voltage of voltage display unit demonstration was 13.5V, the shown current value of current displaing unit was the output current value of generator.
Utilize electric generator detection system provided by the invention, not only can detect the output current value of testing generator easily, and this system also have simple in structure, easy to operate, many advantages such as be easy to safeguard.In addition, utilize system provided by the invention, when detecting the current output value of generator, control accuracy is also very high, and the tachometric survey precision can reach 1 class precision, and the current measurement precision can be accurate to 0.01A.
According to described disclosed embodiment, can be so that those skilled in the art can realize or use the present invention.To those skilled in the art, the various modifications of these embodiment are conspicuous, and the general principles of definition here also can be applied to other embodiment on the basis that does not depart from the scope of the present invention with purport.Above-described embodiment only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1, a kind of electric generator detection system, it is characterized in that, comprise the frequency converter, variable-frequency motor and the generator that connect successively, be the direct supply of generator powered, the voltage display unit that is used for the display voltage value is used to show the current displaing unit and the variable resistor of current value;
Described current displaing unit and the series connection of described variable resistor, described voltage display unit is in parallel with described series circuit, and the external link of described parallel circuit connects with the output terminal of generator respectively.
2, electric generator detection system as claimed in claim 1 is characterized in that, also is parallel with at described variable-resistance two ends to be used for shunt assembly that the electric current on the variable resistor is shunted.
Whether 3, electric generator detection system as claimed in claim 2 is characterized in that, also is in series with switch block on the branch road at described shunt assembly place, be used for selecting to carry out in parallel with described variable resistor described shunt assembly.
4, electric generator detection system as claimed in claim 2 is characterized in that, described shunt assembly comprises: resistance, bulb and miniature bulb group.
As claim 1,2,3 or 4 described electric generator detection systems, it is characterized in that 5, described voltage display unit comprises voltage table.
6, as claim 1,2,3 or 4 described electric generator detection systems, it is characterized in that described current displaing unit comprises reometer.
7, as claim 1,2,3 or 4 described electric generator detection systems, it is characterized in that described variable resistor comprises slider type rheostat.
8, a kind of generator detection device is characterized in that, comprising: be used for the display voltage value the voltage display unit, be used to show the current displaing unit and the variable resistor of current value;
Described current displaing unit and the series connection of described variable resistor, described voltage display unit is in parallel with described series circuit;
The external link of described parallel circuit is connected with the output terminal of generator respectively.
9, generator detection device as claimed in claim 8 is characterized in that, also is parallel with at described variable-resistance two ends to be used for shunt assembly that the electric current on the variable resistor is shunted.
Whether 10, generator detection device as claimed in claim 9 is characterized in that, also is in series with switch block on the branch road at described shunt assembly place, be used for selecting to carry out in parallel with described variable resistor described shunt assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101709570A CN101441250A (en) | 2007-11-22 | 2007-11-22 | Electric generator detection system and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101709570A CN101441250A (en) | 2007-11-22 | 2007-11-22 | Electric generator detection system and apparatus |
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| CN101441250A true CN101441250A (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101709570A Pending CN101441250A (en) | 2007-11-22 | 2007-11-22 | Electric generator detection system and apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788954A (en) * | 2011-05-17 | 2012-11-21 | 东芝三菱电机产业***株式会社 | Preventive maintenance device for electromotor |
| CN102944841A (en) * | 2012-11-20 | 2013-02-27 | 无锡商业职业技术学院 | Detection testing circuit for generator and adjustor of automobile |
| CN104267349A (en) * | 2014-10-22 | 2015-01-07 | 广州智维电子科技有限公司 | Automobile generator testing system |
| CN105301496A (en) * | 2015-11-21 | 2016-02-03 | 成都科瑞信科技有限责任公司 | Motor test system for testing automatic adjustment of rotating speed |
-
2007
- 2007-11-22 CN CNA2007101709570A patent/CN101441250A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102788954A (en) * | 2011-05-17 | 2012-11-21 | 东芝三菱电机产业***株式会社 | Preventive maintenance device for electromotor |
| CN102788954B (en) * | 2011-05-17 | 2015-05-20 | 东芝三菱电机产业***株式会社 | Preventive maintenance device for electromotor |
| CN102944841A (en) * | 2012-11-20 | 2013-02-27 | 无锡商业职业技术学院 | Detection testing circuit for generator and adjustor of automobile |
| CN102944841B (en) * | 2012-11-20 | 2015-08-12 | 无锡商业职业技术学院 | The detection experiment circuit of a kind of automobile current generator and regulator |
| CN104267349A (en) * | 2014-10-22 | 2015-01-07 | 广州智维电子科技有限公司 | Automobile generator testing system |
| CN105301496A (en) * | 2015-11-21 | 2016-02-03 | 成都科瑞信科技有限责任公司 | Motor test system for testing automatic adjustment of rotating speed |
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Open date: 20090527 |