CN102508163A - Method, system and device for detecting load dump of portable generator - Google Patents
Method, system and device for detecting load dump of portable generator Download PDFInfo
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- CN102508163A CN102508163A CN2011103824495A CN201110382449A CN102508163A CN 102508163 A CN102508163 A CN 102508163A CN 2011103824495 A CN2011103824495 A CN 2011103824495A CN 201110382449 A CN201110382449 A CN 201110382449A CN 102508163 A CN102508163 A CN 102508163A
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Abstract
The invention discloses a method, a system and a device for detecting the load dump of a portable generator, relating to an engineering machinery technology. In the technical scheme provided by the embodiment of the invention, a characteristic element replaces a vehicular electronic device to be connected with a branch line, on which a portable generator charging load is, in parallel to carry out a portable generator load dump test; the voltages at two ends of the characteristic element are obtained when the load dump is generated; and simultaneously the damage to the vehicular electronic device is avoided when a load dump voltage is tested, and waveform analysis can be carried out on the load dump voltage to obtain load dump voltage characteristics. According to the invention, a reference basis is supplied for an anti-jamming performance test of the vehicular electronic device and the development of an electromagnetic compatibility standard of an engineering machinery product is facilitated.
Description
Technical field
The present invention relates to the engineering machinery technology, relate in particular to a kind of mobile generator throw load method of testing, system and device.
Background technology
Along with electronic technology and mechanical technique continuous intersected, fusion, make engineering machinery towards high-performance, robotization and intelligent direction development, simultaneously, also brought a large amount of electromagnetic interference problems.
Generator throw load transient phenomenon causes at disconnecting consumers under the unexpected situation or after reducing load by generator, according to GB/T 21437.2, and 7637.2 two standards of ISO, it belongs to electromagnetic compatibility (EMC) category.
As shown in Figure 1; Accumulator is vehicle-mounted power devices such as starter motor M, control module and vehicle electronic device; Control module control starter motor M and generator MG work, generator MG is in the process that charges a battery, if circuit AB breaks off; Then the accumulator as the mobile generator charging load is disconnected, and this moment, throw load took place.When throw load takes place; The generator output current sharply reduces; Cause in the generator armature winding and produce transient overvoltage; This superpotential peak value can reach 5-10 times of nominal supply voltages, when this superpotential acts on vehicle electronic device, possibly cause vehicle electronic device disabler (defective or damage).
In order to prevent that electronic equipment from damaging, need make electronic equipment have certain Immunity Performance, can bear the throw load transient phenomenon of pairing generator.In order directly the Immunity Performance of electronic equipment to be tested, then need obtain the exemplary voltage waveforms when throw load takes place in the generator charging process, and then simulation throw load process is tested to electronic equipment.
Summary of the invention
The embodiment of the invention provides a kind of mobile generator throw load method of testing, system and device, to realize the test to the mobile generator Unloading Voltage.
A kind of mobile generator throw load test macro comprises mobile generator, mobile generator charging load, feature member, voltage record cell and power supply unit, wherein:
Said feature member replaces circuit after vehicle electronic device and the parallel connection of said mobile generator charging load to be connected the power lead of said mobile generator;
Said voltage record cell is used for after mobile generator charging load branch road breaks off, writing down said feature member voltage, and the impedance of said feature member is according to the impedance setting of vehicle electronic device;
Said power supply unit, being used to replace said mobile generator charging load is the mobile unit power supply.
A kind of mobile generator throw load proving installation comprises:
Control module when being used to confirm to reach the throw load test condition, breaks off the mobile generator charging load;
Record cell; Be used for recording feature element voltage; Said feature member replaces vehicle electronic device parallelly connected with the branch road at said mobile generator charging load place when carrying out the throw load test, and the impedance of said feature member is according to the impedance setting of vehicle electronic device.
A kind of mobile generator throw load method of testing comprises:
When confirming to reach the throw load test condition, break off the mobile generator charging load;
Recording feature element voltage, said feature member replace vehicle electronic device parallelly connected with the branch road at said mobile generator charging load place when carrying out the throw load test, and the impedance of said feature member is according to the impedance setting of vehicle electronic device.
The embodiment of the invention provides a kind of mobile generator throw load method of testing, system and device; Replace vehicle electronic device to test by feature member with the parallelly connected mobile generator throw load that carries out of the branch road at said mobile generator charging load place; Feature member voltage when acquisition takes place at throw load; Avoided simultaneously when carrying out the Unloading Voltage test, damaging vehicle electronic device, and can carry out wave form analysis, obtained the Unloading Voltage characteristic Unloading Voltage.For the test of vehicle electronic device Immunity Performance provides reference frame, help the formation of construction machinery product electromagnetic compatibility standard.
Description of drawings
Fig. 1 is a mobile generator charging circuit structural representation in the prior art;
The mobile generator throw load method of testing process flow diagram that Fig. 2 provides for the embodiment of the invention;
The mobile generator throw load test system structure synoptic diagram that Fig. 3 provides for the embodiment of the invention;
A kind of preferable mobile generator throw load test system structure synoptic diagram that Fig. 4 provides for the embodiment of the invention;
The preferable mobile generator throw load method of testing process flow diagram that Fig. 5 provides for the embodiment of the invention;
The mobile generator throw load proving installation structural representation that Fig. 6 provides for the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of mobile generator throw load method of testing, system and device; Replace the parallelly connected mobile generator throw load that carries out of vehicle electronic device to test by feature member with the branch road at mobile generator charging load place; Feature member voltage when acquisition takes place at throw load; Avoided simultaneously when carrying out the Unloading Voltage test, damaging vehicle electronic device, and can carry out wave form analysis, obtained the Unloading Voltage characteristic Unloading Voltage.For the test of vehicle electronic device Immunity Performance provides reference frame, help the formation of construction machinery product electromagnetic compatibility standard.
As shown in Figure 2, the mobile generator throw load method of testing that the embodiment of the invention provides comprises:
Step S201, when confirming to reach the throw load test condition, break off the mobile generator charging load;
Step S202, recording feature element voltage, feature member replace vehicle electronic device parallelly connected with the branch road at mobile generator charging load place when carrying out the throw load test, and the impedance of feature member is according to the impedance setting of vehicle electronic device.
Owing to be to replace the parallelly connected mobile generator throw load that carries out of vehicle electronic device to test with the branch road at mobile generator charging load place by feature member; So in the process of testing; Can obtain feature member voltage when throw load takes place; Can not constitute injury to vehicle electronic device simultaneously, after obtaining the Unloading Voltage characteristic, then can further come vehicle electronic device is improved according to this Unloading Voltage.
Below in conjunction with concrete circuit, the mobile generator throw load method of testing that the embodiment of the invention is provided is elaborated:
As shown in Figure 3, comprise in this mobile generator throw load test macro:
Said voltage record cell 304 is used for after the branch road at mobile generator charging load 302 places breaks off, recording feature element 303 voltage, and the impedance of this feature member 303 is according to the impedance setting of vehicle electronic device 305;
This power supply unit 311 uses and can replace mobile generator charging load 302 to get final product as the equipment of mobile unit power supply, for example, can use standby battery.
As shown in Figure 4, for when carrying out charge in batteries, reduce unnecessary heating loss, can belong in feature member first relay 306 further is set in the branch road, the connected sum that is used for controlling features element place branch road breaks off.
When carrying out the throw load test; First relay 306 is in connected state; The branch road at feature member 303 and first relay, 306 places is parallelly connected with the branch road at mobile generator charging load place; If before breaking off mobile generator charging load 302, confirm that feature member 303 is not parallelly connected with mobile generator charging load 302, can confirm that then this moment, first relay 306 was in off-state; Need before breaking off mobile generator charging load 302, connect by control first relay 306, feature member 303 is inserted mobile generator throw load test macro.
As shown in Figure 4; The connected sum of controlling mobile generator charging load 302 place branch roads for ease breaks off; To improve testing efficiency; Then can second relay 307 be set in mobile generator charging load 302 branch roads, be used to control the connected sum disconnection of mobile generator charging load 302 place branch roads.
When mobile generator charging load 302 place branch roads were communicated with, mobile generator charging load 302 was in charged state, when carrying out the throw load process, broke off mobile generator charging load 302 place branch roads and got final product.
First voltage detection unit 3041 is used to obtain feature member 303 voltage, and the voltage signal that is obtained is transferred to the acquisition process unit;
Acquisition process unit 3042 is used for voltage signal is handled and stored, so that follow-up further processing and analysis to voltage signal.
Situation as shown in Figure 4 because feature member 303 1 end ground connection so first voltage detection unit 3041 can be specially voltage sensor, are connected the other end of feature member 303, and then obtains feature member 303 voltage.
Acquisition process unit 3042 is stored after can only converting analog voltage signal into digital signal, also can carry out storing after noise filtering etc. is further handled to the digital signal after the conversion again.
After obtaining the stored voltage signal, can carry out wave form analysis to this voltage signal, canonical parameters such as the rise time of acquisition pulse, pulse width are so that further use.
In embodiments of the present invention, mobile generator charging load 302 is specially accumulator, certainly, is applicable to that also other need carry out the equipment of mobile generator charging.
Be example below with the accumulator, mobile generator throw load method of testing be elaborated:
In order to reach preferable throw load test effect, need make as far as possible that battery is in stable charged state when throw load, the throw load test condition in the time of can as far as possible making each the test is consistent, and usually, the throw load test condition can be set to:
Accumulator is in the power shortage state, and
The duration of charging of accumulator reaches the setting-up time scope, and perhaps the charging current of accumulator reaches the setting range of current.
Generally speaking, be that standard can be so that the test condition of each test be more approaching with the charging current of accumulator, and then make test result more accurate.
In the specific implementation, can be through the charging current of current detecting unit monitoring accumulator; And when the charging current of accumulator is stabilized in the setting range of current, confirm that the charging current of accumulator reaches the setting range of current.Wherein, be stabilized in setting range and can be set to the time that charging current continues in setting range of current and reach setting value, this scope is arranged on more than 1 second and all can meets the demands.
At this moment, as shown in Figure 4, also comprise in the mobile generator throw load test macro:
Current detecting unit 308 is connected in the mobile generator charging load 302 place branch roads, is used to monitor the charging current of accumulator.
For confirming whether accumulator is in the power shortage state, can in mobile generator charging load 302 place branch roads, second voltage detection unit 309 be set, be used to detect the voltage at accumulator two ends.
When whether definite accumulator is in the power shortage state, detect the voltage of accumulator through second voltage detection unit; During less than setting voltage, confirm that accumulator is in the power shortage state at the magnitude of voltage of accumulator.
Certainly, it is more to guarantee that accumulator is in the mode of power shortage state, for example, can make accumulator that power consumption exhausted as the mobile generator charging load; Also can be through being used to discharge or the electric weight vent unit of battery consumption electric weight exhausts said accumulator electric-quantity.
For fear of the frequent change accumulator, be convenient to the electric weight of battery consumption simultaneously, as shown in Figure 4, also comprise in the mobile generator throw load test macro that the embodiment of the invention provides:
Electric weight vent unit 310 is connected in parallel with accumulator, is used for discharging or the battery consumption electric weight.
For the ease of access and the disconnection of controlling this electric weight vent unit 310, this electric weight vent unit 310 can specifically comprise:
The 3rd relay 3101 is used to control the disconnection and the connection of electric weight vent unit 310 place branch roads;
At this moment, through being used to discharge or the electric weight vent unit 310 of battery consumption electric weight exhausts said accumulator electric-quantity, be specially: the 3rd relay 3101 that control is used for electric weight vent unit 310 is connected the accumulator two ends is communicated with; And during less than setting voltage, control the 3rd relay 3101 and break off at the magnitude of voltage of accumulator electric-quantity.
When the record Unloading Voltage, can voltage waveform be presented on the display device, so that tester's monitoring and control, certainly, operating personnel also can check the Unloading Voltage waveform that is write down at any time after the record Unloading Voltage.
Below in conjunction with Fig. 4 and Fig. 5 the detailed process of throw load test is introduced, this flow process comprises:
Step S501, confirm whether accumulator is in the power shortage state, if not, execution in step S502, if, execution in step S503;
Step S502, control the 3rd relay are connected, and carry out battery discharging, and finish the back in discharge and break off the 3rd relay, and execution in step S501;
Step S503, control second relay are connected, and make accumulator insert as the mobile generator charging load;
Step S504, engine start, mobile generator are charge in batteries;
Step S505, detect charging current through current detecting unit and whether reach setting range, if, execution in step S506 then, otherwise continue execution in step S505;
Step S506, control first relay are connected, and make feature member insert mobile generator throw load test macro;
Step S507, control second relay break off, simulation throw load process;
Step S508, voltage recording unit records feature member voltage;
Step S509, voltage record cell confirm whether magnitude of voltage is stable, if if execution in step 510 not, continues step S508;
Step S510, voltage record cell stop the record of feature member voltage;
Step S511, on display device the voltage waveform of display voltage recording unit records;
Step S512, determine whether to need beginning test next time, if, execution in step S513, otherwise, test finished;
Step S513, control first relay, second relay and the 3rd relay break off, and execution in step S501.
As shown in Figure 6, the embodiment of the invention also provides a kind of mobile generator throw load proving installation corresponding to mobile generator throw load method of testing, comprises in this device:
Control module 601 when being used to confirm to reach the throw load test condition, breaks off the mobile generator charging load;
Record cell 602 is used for recording feature element voltage, and feature member replaces vehicle electronic device parallelly connected with the branch road at mobile generator charging load place when carrying out the throw load test, and the impedance of feature member is according to the impedance setting of vehicle electronic device.
Further, for when carrying out charge in batteries, reduce unnecessary heating loss, can belong in feature member first relay is set in the branch road, the connected sum that is used for controlling features element place branch road breaks off, and at this moment, control module 601 also is used for:
Before breaking off the mobile generator charging load; When definite feature member does not insert the mobile generator test macro; Controlling first relay connects; Feature member is inserted the mobile generator test macro, and feature member inserts the mobile generator test macro through first relay when carrying out the throw load test.
Record cell 602 specifically is used for:
Obtain the feature member voltage through first voltage detection unit, and the voltage signal that is obtained is transferred to the acquisition process unit;
The acquisition process unit is handled and is stored voltage signal.
The connected sum of controlling mobile generator charging load place branch road for ease breaks off; To improve testing efficiency; Then can in mobile generator charging load branch road, second relay be set, be used to control the connected sum disconnection of mobile generator charging load place branch road.At this moment, control module 601 breaks off the mobile generator charging load, is specially:
Second relay on the branch road of control mobile generator charging load place breaks off.
Same, be that accumulator is that example describes with the mobile generator charging load:
Control module 601 confirms to reach the throw load test condition, specifically comprises:
Confirm that accumulator is in the power shortage state;
The duration of charging of confirming accumulator reaches the setting-up time scope, confirms that perhaps the charging current of accumulator reaches the setting range of current.
Control module 601 confirms that the charging current of accumulator reaches the setting range of current, specifically comprises:
Charging current through current detecting unit monitoring accumulator;
When the charging current of accumulator is stabilized in the setting range of current, confirm that the charging current of accumulator reaches the setting range of current.
Control module 601 confirms that accumulator is in the power shortage state, specifically comprises:
Detect the voltage of accumulator through second voltage detection unit;
During less than setting voltage, confirm that accumulator is in the power shortage state at the magnitude of voltage of accumulator.
For fear of the frequent change accumulator, be convenient to the electric weight of battery consumption simultaneously, the electric weight of electric weight vent unit battery consumption can be set, at this moment, control module 601 also comprises before confirming that accumulator is in the power shortage state:
Through being used to discharge or the electric weight vent unit of battery consumption electric weight exhausts accumulator electric-quantity.
Control module 601 specifically comprises through being used to discharge or the electric weight vent unit of battery consumption electric weight exhausts accumulator electric-quantity:
Control is used for the electric weight vent unit is connected the 3rd relay connection at accumulator two ends;
, control the 3rd relay and break off during at the magnitude of voltage of accumulator electric-quantity less than setting voltage.
The embodiment of the invention provides a kind of mobile generator throw load method of testing, system and device; Replace vehicle electronic device to test by feature member with the parallelly connected mobile generator throw load that carries out of the branch road at said mobile generator charging load place; Feature member voltage when acquisition takes place at throw load; Avoided simultaneously when carrying out the Unloading Voltage test, damaging vehicle electronic device, and can carry out wave form analysis, obtained the Unloading Voltage characteristic Unloading Voltage.For the test of vehicle electronic device Immunity Performance provides reference frame, help the formation of construction machinery product electromagnetic compatibility standard.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (21)
1. a mobile generator throw load test macro is characterized in that, comprises mobile generator, mobile generator charging load, feature member, voltage record cell and power supply unit, wherein:
Said feature member replaces circuit after vehicle electronic device and the parallel connection of said mobile generator charging load to be connected the power lead of said mobile generator;
Said voltage record cell is used for after mobile generator charging load branch road breaks off, writing down said feature member voltage, and the impedance of said feature member is according to the impedance setting of vehicle electronic device;
Said power supply unit, being used to replace said mobile generator charging load is the mobile unit power supply.
2. the system of claim 1 is characterized in that, also comprises:
First relay is connected in the branch road of feature member place, is used to control the connected sum disconnection of said feature member place branch road.
3. the system of claim 1 is characterized in that, also comprises:
Second relay is connected in the said mobile generator charging load branch road, is used to control the connected sum disconnection of said mobile generator charging load branch road.
4. the system of claim 1 is characterized in that, said voltage record cell specifically comprises first voltage detection unit and acquisition process unit, wherein:
First voltage detection unit is used to obtain said feature member voltage, and the voltage signal that is obtained is transferred to said acquisition process unit;
The acquisition process unit is used for said voltage signal is handled and stored.
5. the system of claim 1 is characterized in that, said mobile generator charging load is specially: accumulator;
Also comprise in the said system:
Current detecting unit is connected in the said mobile generator charging load branch road, is used to monitor the charging current of said accumulator.
6. system as claimed in claim 5 is characterized in that, also comprises:
Second voltage detection unit is used to detect the voltage at said accumulator two ends.
7. like claim 5 or 6 described systems, it is characterized in that, also comprise:
The electric weight vent unit is connected in parallel with said accumulator, is used for discharging or the battery consumption electric weight.
8. system as claimed in claim 7 is characterized in that, said electric weight vent unit specifically comprises:
The 3rd relay is used to control the disconnection and the connection of said electric weight vent unit place branch road;
Bleeder resistance is used for the battery consumption electric weight.
9. a mobile generator throw load proving installation is characterized in that, comprising:
Control module when being used to confirm to reach the throw load test condition, breaks off the mobile generator charging load;
Record cell; Be used for recording feature element voltage; Said feature member replaces vehicle electronic device parallelly connected with the branch road at said mobile generator charging load place when carrying out the throw load test, and the impedance of said feature member is according to the impedance setting of vehicle electronic device.
10. device as claimed in claim 9 is characterized in that, said control module also is used for:
Before said disconnection mobile generator charging load; When confirming that said feature member does not replace vehicle electronic device parallelly connected with the branch road at said mobile generator charging load place; Controlling first relay connects; Replace vehicle electronic device parallelly connected with the branch road at said mobile generator charging load place said feature member, said feature member replaces vehicle electronic device parallelly connected with the branch road at said mobile generator charging load place through first relay when carrying out the throw load test.
11. device as claimed in claim 9 is characterized in that, said record cell specifically is used for:
Obtain said feature member voltage through first voltage detection unit, and the voltage signal that is obtained is transferred to the acquisition process unit;
Said acquisition process unit is handled and is stored said voltage signal.
12. device as claimed in claim 9 is characterized in that, said control module breaks off the mobile generator charging load, is specially:
Second relay on the branch road of control mobile generator charging load place breaks off.
13. device as claimed in claim 9 is characterized in that, said mobile generator charging load is specially: accumulator;
Said control module confirms to reach the throw load test condition, specifically comprises:
Confirm that said accumulator is in the power shortage state;
The duration of charging of confirming said accumulator reaches the setting-up time scope, confirms that perhaps the charging current of said accumulator reaches the setting range of current.
14. device as claimed in claim 13 is characterized in that, said control module confirms that the charging current of accumulator reaches the setting range of current, specifically comprises:
Monitor the charging current of said accumulator through current detecting unit;
When the charging current of said accumulator is stabilized in the setting range of current, confirm that the charging current of accumulator reaches the setting range of current.
15. device as claimed in claim 11 is characterized in that, said control module confirms that said accumulator is in the power shortage state, specifically comprises:
Detect the voltage of said accumulator through second voltage detection unit;
During less than setting voltage, confirm that said accumulator is in the power shortage state at the magnitude of voltage of said accumulator.
16. device as claimed in claim 15 is characterized in that, said control module also comprises before confirming that said accumulator is in the power shortage state:
Through being used to discharge or the electric weight vent unit of battery consumption electric weight exhausts said accumulator electric-quantity.
17. device as claimed in claim 16 is characterized in that, said control module specifically comprises through being used to discharge or the electric weight vent unit of battery consumption electric weight exhausts said accumulator electric-quantity:
Control is used for the electric weight vent unit is connected the 3rd relay connection at accumulator two ends;
, control said the 3rd relay and break off during at the magnitude of voltage of said accumulator electric-quantity less than setting voltage.
18. a mobile generator throw load method of testing is characterized in that, comprising:
When confirming to reach the throw load test condition, break off the mobile generator charging load;
Recording feature element voltage, said feature member replace vehicle electronic device parallelly connected with the branch road at said mobile generator charging load place when carrying out the throw load test, and the impedance of said feature member is according to the impedance setting of vehicle electronic device.
19. method as claimed in claim 18 is characterized in that, said mobile generator charging load is specially: accumulator;
Saidly confirm to reach the throw load test condition, specifically comprise:
Confirm that said accumulator is in the power shortage state;
The duration of charging of confirming said accumulator reaches the setting-up time scope, confirms that perhaps the charging current of said accumulator reaches the setting range of current.
20. method as claimed in claim 19 is characterized in that, before said definite said accumulator is in the power shortage state, also comprises:
Make accumulator that power consumption exhausted as the mobile generator charging load; Perhaps
Through being used to discharge or the electric weight vent unit of battery consumption electric weight exhausts said accumulator electric-quantity.
21. method as claimed in claim 20 is characterized in that, and is said through being used to discharge or the electric weight vent unit of battery consumption electric weight exhausts said accumulator electric-quantity, specifically comprises:
Control is used for the electric weight vent unit is connected the 3rd relay connection at accumulator two ends;
, control said the 3rd relay and break off during at the magnitude of voltage of said accumulator electric-quantity less than setting voltage.
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| CN201110382449.5A CN102508163B (en) | 2011-11-25 | 2011-11-25 | Method, system and device for detecting load dump of portable generator |
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| CN201110382449.5A CN102508163B (en) | 2011-11-25 | 2011-11-25 | Method, system and device for detecting load dump of portable generator |
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| CN102508163B CN102508163B (en) | 2014-06-04 |
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| CN103575945A (en) * | 2013-11-06 | 2014-02-12 | 苏州泰思特电子科技有限公司 | Novel throw load voltage wave restraining device |
| CN106154079A (en) * | 2015-05-13 | 2016-11-23 | 罗伯特·博世有限公司 | For the method monitoring onboard power system |
| CN109239483A (en) * | 2018-07-30 | 2019-01-18 | 北京长城华冠汽车科技股份有限公司 | A kind of the high pressure throw load test macro and test method of electric car |
| CN111443249A (en) * | 2020-03-30 | 2020-07-24 | 徐州徐工汽车制造有限公司 | High-precision automobile load rejection test system based on network communication |
| CN112284755A (en) * | 2020-09-29 | 2021-01-29 | 奇瑞汽车股份有限公司 | Test method for load shedding of electric appliance of whole vehicle in real vehicle environment |
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Cited By (5)
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| CN111443249A (en) * | 2020-03-30 | 2020-07-24 | 徐州徐工汽车制造有限公司 | High-precision automobile load rejection test system based on network communication |
| CN112284755A (en) * | 2020-09-29 | 2021-01-29 | 奇瑞汽车股份有限公司 | Test method for load shedding of electric appliance of whole vehicle in real vehicle environment |
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| Publication number | Publication date |
|---|---|
| CN102508163B (en) | 2014-06-04 |
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