CN101498753B - Load apparatus for regulating operation frequency range according to impedance of article to be measured, and regulation method thereof - Google Patents
Load apparatus for regulating operation frequency range according to impedance of article to be measured, and regulation method thereof Download PDFInfo
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- CN101498753B CN101498753B CN2008100094272A CN200810009427A CN101498753B CN 101498753 B CN101498753 B CN 101498753B CN 2008100094272 A CN2008100094272 A CN 2008100094272A CN 200810009427 A CN200810009427 A CN 200810009427A CN 101498753 B CN101498753 B CN 101498753B
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Abstract
The invention relates to a load device capable of adjusting the operation frequency width according to the impedance of a measured object and an adjusting method. The load device capable of adjusting the operation frequency width according to the impedance of a measured object comprises a central processing unit, an electronic load module and a power module, wherein the central processing unit is provided with an impedance frequency width comparison table; and the electronic load module comprises a control module which further comprises a frequency width adjusting module. The central processing unit outputs a tensile-load signal; the control module controls the power module to carry out a tensile-load action for the measured object so as to enable the measured object to output a quantitative current in a tensile-load way; and the central processing unit takes the voltage and the current of the measured object at this moment, utilizes the current and the voltage to analyze to obtain an output impedance value of the measured object, compares the output impedance value and the impedance frequency width comparison table so as to obtain a corresponding operation frequency width, and finally utilizes the frequency width adjusting module to set the frequency width as the operation frequency width.
Description
Technical field
The invention relates to a kind of load device, be meant an a kind of output impedance value of measuring described determinand in advance especially, compare corresponding empirical value again, and obtain meeting the load device and the method for adjustment that to operate frequency range according to determinand impedance adjustment of the operation frequency range of testing determinand.
Background technology
General electronic products is when the development phase, all need it is tested, the user often utilizes the electronic load of reality or simulation to test determinand, thereafter the determinand of using is made to test the most realistic demand if can use during exploitation, but such mode will make and be full of restriction in the test process, in case will develop a kind of electronic product, then must obtain described electronic product determinand for test, quite unrealistic, therefore, the developer of general electronic products can utilize resistance, inductance, passive devices such as electric capacity come the characteristic of fictitious load circuit with the simulation determinand, but such practice is if want the transformation load size, must do resistance, inductance, the size variation of electric capacity, but the volume of actual components is big and be difficult for adjustment, can't simulate truth definitely.
Therefore, developing electronic load loading condition that is virtually reality like reality thereafter, is example with pure passive device (resistance, inductance, electric capacity), its frequency range infinity, reaction velocity is fast, therefore during as load can along with the input voltage reacting condition on pulling load current, quite stable; But electronic load is analog load, this also can't compare reaction with pure passive device, for electronic load, the output impedance meeting of determinand influences system can operate frequency range, and the frequency range that electronic load is often taked to fix designs, the user is if carry out big electric current (power) operation being unfamiliar with under the determinand output situation, will cause the total system action undesired, can allow determinand or load burn what is more because of vibration, because of the output impedance of electronic product differs, so fixedly the electronic load of frequency range designs and be unable to cope with omnifarious electronic product output characteristics, therefore electronic load use field is severely limited.
Therefore the present invention proposes variable frequency range mechanism, utilize measurement determinand output impedance technology to obtain the determinand impedance, with contrast build up impedance frequency range table earlier, obtain suitable frequency range information, and so as to setting the load frequency range of the most suitable system operation, phase is improved the disappearance of existing technology by the proposition of this case, with beneficial to the relevant design manufacturer.
Summary of the invention
A purpose of the present invention is to provide a kind of load device and the method for adjustment that can operate frequency range according to determinand impedance adjustment, utilize the impedance of measured determinand to adjust the operation frequency range of load device, and then reach the target that meets test request, also avoid the serious consequence that does not match and caused because of the impedance frequency range.
A kind of load device that can operate frequency range according to determinand impedance adjustment of the present invention comprise a CPU (central processing unit), has an impedance frequency range table of comparisons; One electronic load module, described electronic load module comprises: a control module comprises a frequency range adjusting module; An and power model; Draw a year signal by described CPU (central processing unit) output one, require described power model one determinand to be drawn the action of carrying by described control module again, carry an electric current to draw from described determinand, so determinand is exported a certain amount of electric current, CPU (central processing unit) is measured the voltage and the electric current of determinand this moment, and utilize described electric current and described voltage analysis to draw an output impedance value of determinand, contrast the described impedance frequency range table of comparisons according to described output impedance value again, can obtain a corresponding operation frequency range, utilize described frequency range adjusting module that frequency range is set at described operation frequency range again.
A kind of method that can operate frequency range according to determinand impedance adjustment of the present invention comprise (a) beginning; (b) draw a year signal by CPU (central processing unit) output one; (c) require a power model that one determinand is drawn the action of carrying by a control module, carry an electric current to draw from described determinand; (d) determinand is exported a certain amount of electric current; (e) described CPU (central processing unit) is measured the voltage and the electric current of determinand this moment; (f) CPU (central processing unit) utilizes described electric current and described voltage analysis to draw an output impedance value of determinand; (g) contrast an impedance frequency range table of comparisons according to described output impedance value, promptly obtain a corresponding operation frequency range; (h) a frequency range adjusting module is set at described operation frequency range with frequency range; And (i) end.
Can be further understood by following detailed description and accompanying drawings according to the load device and the method for adjustment of determinand impedance adjustment operation frequency range about of the present invention.
Description of drawings
Fig. 1 is the synoptic diagram that can operate the load device of frequency range according to determinand impedance adjustment of the present invention;
Fig. 2 be of the present invention can be according to the process flow diagram of the method for determinand impedance adjustment operation frequency range; And
Fig. 3 is the conspectus that can operate the load device of frequency range according to determinand impedance adjustment of the present invention.
Drawing reference numeral
110 load devices
120 determinands
130 CPU (central processing unit)
130 ' draws a year signal
The 131 impedance frequency range tables of comparisons
140 electronic load modules
141 control modules
142 power models
143 frequency range adjusting modules
(S1)～(S9) each number of steps
Embodiment
Its output characteristics of interchange product on the market is neither identical, and can't be with a lid, it is reported that its output impedance is in the majority with inductive, and sensibility reciprocal distributes neither equating, in different range, carry out active electronics load operation, its pairing frequency range has nothing in common with each other certainly, therefore table be must build at such determinand characteristic in advance output impedance and the relation of operating frequency range understood, utilize determinand output impedance measuring technique to obtain at that time determinand output impedance then, behind the impedance frequency range table of comparisons of being built before this data contrast, set the frequency range of the operation frequency range of electronic load for the contrast gained, can avoid thus because of impedance and the operation frequency range institute that do not match causes the unsettled situation of system to take place, relevant design of the present invention will be described in detail down.
See also Fig. 1 and Fig. 3, be synoptic diagram and the conspectus that can operate the load device of frequency range according to determinand impedance adjustment of the present invention, described load device 110 comprises a CPU (central processing unit) 130, has an impedance frequency range table of comparisons 131; One electronic load module 140 comprises: a control module 141 comprises a frequency range adjusting module 143; An and power model 142; Draw a year signal 130 ' by described CPU (central processing unit) 130 outputs one, require 142 pairs one determinands 120 of described power model to draw the action of carrying by described control module 141 again, carry an electric current to draw from described determinand 120, so determinand 120 is exported a certain amount of electric current, CPU (central processing unit) 130 is measured the voltage and the electric current of determinand 120 this moment, and utilize described electric current and described voltage analysis to draw an output impedance value of determinand 120, contrast the described impedance frequency range table of comparisons 131 according to described output impedance value again, can obtain a corresponding operation frequency range, utilize described frequency range adjusting module 143 that frequency range is set at described operation frequency range again.Therefore, can avoid being unfamiliar with under the determinand 120 output situations, cause total system to move abnormal situation when carrying out big electric current (high-power) operation.
Wherein, determinand 120 can or exchange determinand for the direct current determinand.
See also Fig. 2, can operate the process flow diagram of the method for frequency range according to determinand impedance adjustment, may further comprise the steps for of the present invention:
Step S1: beginning;
Step S2: draw a year signal by CPU (central processing unit) output one;
Step S3: require a power model that one determinand is drawn the action of carrying by a control module, carry an electric current to draw from described determinand;
Step S4: determinand is exported a certain amount of electric current;
Step S5: described CPU (central processing unit) is measured the voltage and the electric current of determinand this moment;
Step S6: CPU (central processing unit) utilizes described electric current and described voltage analysis to draw an output impedance value of determinand;
Step S7: contrast the described impedance frequency range table of comparisons according to described output impedance value, promptly obtain a corresponding operation frequency range;
Step S8: described frequency range adjusting module is set at described operation frequency range with frequency range; And
Step S9: finish.
Wherein, determinand can or exchange determinand for the direct current determinand.
In sum, the present invention utilizes CPU (central processing unit) operation electronic load module, to carry out the measurement of determinand impedance, then remove to contrast the built-in impedance frequency range table of comparisons of CPU (central processing unit) according to measured resistance value, to select suitable system operation frequency range, carry out the frequency range of load device again and set, just begin normal operation after finishing, the like this then serious consequence that can avoid the impedance frequency range because of determinand not match and caused.
Though the present invention illustrates as above with preferred embodiments, so it is not in order to limit spirit of the present invention and the invention entity only terminates in the foregoing description.Therefore, the modification of being done in not breaking away from spirit of the present invention and scope all should be included in the claim scope.
Claims (4)
1. one kind can is characterized in that according to the load device of determinand impedance adjustment operation frequency range, and described can the test determinand according to the load device of determinand impedance adjustment operation frequency range comprises:
One CPU (central processing unit) has an impedance frequency range table of comparisons;
One electronic load module comprises: a control module and a power model, described control module comprise a frequency range adjusting module;
Draw a year signal by described CPU (central processing unit) output one, require described power model one determinand to be drawn the action of carrying by described control module again, carry an electric current to draw from described determinand, determinand will be exported a certain amount of electric current, CPU (central processing unit) is measured the voltage and the electric current of determinand this moment, and utilize described electric current and described voltage analysis to draw an output impedance value of determinand, contrast the described impedance frequency range table of comparisons according to described output impedance value, can obtain a corresponding operation frequency range, utilize described frequency range adjusting module that frequency range is set at described operation frequency range again.
2. as claimed in claim 1 can it is characterized in that according to the load device of determinand impedance adjustment operation frequency range, wherein, described determinand can be following any: the direct current determinand with exchange determinand.
3. one kind can is characterized in that according to the method for determinand impedance adjustment operation frequency range, described can comprising according to the method for determinand impedance adjustment operation frequency range:
(a) beginning;
(b) draw a year signal by CPU (central processing unit) output one;
(c) require a power model that one determinand is drawn the action of carrying by a control module, carry an electric current to draw from described determinand;
(d) determinand is exported a certain amount of electric current;
(e) described CPU (central processing unit) is measured the voltage and the electric current of determinand this moment;
(f) CPU (central processing unit) utilizes described electric current and described voltage analysis to draw an output impedance value of determinand;
(g) contrast an impedance frequency range table of comparisons according to described output impedance value, promptly obtain a corresponding operation frequency range;
(h) a frequency range adjusting module is set at described operation frequency range with frequency range; And
(i) finish.
4. as claimed in claim 3 can it is characterized in that according to the method for determinand impedance adjustment operation frequency range, wherein, described determinand can be following any: the direct current determinand with exchange determinand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100094272A CN101498753B (en) | 2008-02-01 | 2008-02-01 | Load apparatus for regulating operation frequency range according to impedance of article to be measured, and regulation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100094272A CN101498753B (en) | 2008-02-01 | 2008-02-01 | Load apparatus for regulating operation frequency range according to impedance of article to be measured, and regulation method thereof |
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| CN101498753A CN101498753A (en) | 2009-08-05 |
| CN101498753B true CN101498753B (en) | 2011-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100094272A Active CN101498753B (en) | 2008-02-01 | 2008-02-01 | Load apparatus for regulating operation frequency range according to impedance of article to be measured, and regulation method thereof |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103376364A (en) * | 2012-04-16 | 2013-10-30 | 鸿富锦精密工业（深圳）有限公司 | Output impedance test device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0678759A1 (en) * | 1994-04-18 | 1995-10-25 | Schneider Electric Sa | Inductive proximity detector with adjustable frequency |
| CN1536368A (en) * | 2003-04-09 | 2004-10-13 | 计测技术研究所 | Electronic loading device |
| CN200947114Y (en) * | 2006-04-28 | 2007-09-12 | 致茂电子股份有限公司 | Test instrument for driving module of cold-cathode lamp tube |
-
2008
- 2008-02-01 CN CN2008100094272A patent/CN101498753B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0678759A1 (en) * | 1994-04-18 | 1995-10-25 | Schneider Electric Sa | Inductive proximity detector with adjustable frequency |
| CN1536368A (en) * | 2003-04-09 | 2004-10-13 | 计测技术研究所 | Electronic loading device |
| CN200947114Y (en) * | 2006-04-28 | 2007-09-12 | 致茂电子股份有限公司 | Test instrument for driving module of cold-cathode lamp tube |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-49000A 2000.02.18 |
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| CN101498753A (en) | 2009-08-05 |
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