CN102468823A - Method and apparatus for avoiding gear switching noise of relay in signal source - Google Patents
Method and apparatus for avoiding gear switching noise of relay in signal source Download PDFInfo
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- CN102468823A CN102468823A CN2010105311761A CN201010531176A CN102468823A CN 102468823 A CN102468823 A CN 102468823A CN 2010105311761 A CN2010105311761 A CN 2010105311761A CN 201010531176 A CN201010531176 A CN 201010531176A CN 102468823 A CN102468823 A CN 102468823A
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Abstract
The embodiment of the invention provides a method and an apparatus for avoiding gear switching noise of a relay in a signal source. The method comprises the following steps that: it is determined whether it is necessary to switch a gear for operation of a user; if it is necessary to switch a gear, it is determined whether the user carries out switching from a large gear to a small gear; if so, a gear switching relay is firstly configured to carry out gear switching and then a multiplier is configured to reach a needed output value; if not, the multiplier is firstly configured and then the gear switching relay is configured so as to reach a needed output value; if it is unnecessary to switch a gear, the multiplier is configured in a current gear according to the operation of the user, so that an output value is adjusted. According to the embodiment of the invention, all gear switching situations are determined and gear switching operation with different orders is carried out according to the different gear switching situations; therefore, an objective that gear switching noise generated by a signal source generator during the gear switching process is eliminated can be achieved.
Description
Technical field
The present invention relates to signal the field takes place, especially relate to a kind of method and apparatus of in signal source, avoiding relay to cut grade noise.
Background technology
At present; The highest output amplitude and the minimum output amplitude of signal source generator can differ greatly; Can output amplitude can be the signal of 20Vpp such as certain random wave generator is the highest, minimum can output amplitude be the signal of 10mVpp, and the ratio of amplitude peak and minimum radius has reached 2000:1; To in so big scope, regulate, generally different gears need be set.
Gear in the source current signal generator all through multiplier, attenuator, amplifier with, decay transfer relay, amplify transfer relay and output relay is accomplished; See also Fig. 1; It is that the gear in a kind of signal source generator constitutes sketch map in the prior art, in Fig. 1, after analog signal gets into multiplier; Multiplier amplifies this analog signal or dwindles; Amplification that multiplier is concrete or minification can be configured it by software, and through exporting behind attenuator and the amplifier, the transfer relay A that wherein decays is used for the gating attenuator to signal, amplification transfer relay B is used for gated amplifier successively then; Output relay C is used for control and whether exports; Combination through different attenuator and amplifier promptly can constitute different gears, and regulates in a gear through the signal source generator that can make of configuration multiplier.
But present signal source generator all is to switch according to set a kind of order when carrying out gear switch, such as first switched amplifier, switches attenuator again, and then the configuration multiplier etc.There is following problem in this with regard to causing prior art:
When big gear is arrived in little gear switch, when especially the higher value from little gear switches to the smaller value in the big gear, be 0-2V such as little gear; Big gear is 3-4V, and when 2V switches to 3V, because the multiple of multiplier arrangement is bigger during 2V; And in the big gear during 3V, as long as multiplier is the less multiple of configuration, therefore; If switch earlier attenuator and amplifier, dispose the multiplier multiple again, can make and switch behind attenuator and the amplifier to disposing the multiplier multiple bigger signal of interior during this period of time generation before; On signal spectrum, show as bigger spike, promptly cut a grade noise.
When from big gear switch to little gear; When especially the smaller value from big gear switches to the higher value in the little gear; If dispose the multiplier multiple earlier; Switch attenuator and amplifier again, also can be behind configuration multiplier multiple before switch attenuator and amplifier during this period of time in generation cut a grade noise.
Thisly cut the quality that grade noise has not only reduced signal source output signal; The more important thing is that cutting the energy that grade noise carries might damage the equipment that the user is connected to signal source; Cause tremendous loss to the user; Therefore in user's use, reducing or eliminating grade noise of cutting in grade process of cutting is an extremely important and necessary thing.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method and apparatus of in signal source, avoiding relay to cut grade noise, is cut a grade noise with what the erasure signal source generator produced in cutting grade process.
On the one hand; The embodiment of the invention provides a kind of method of in signal source, avoiding relay to cut grade noise, and this method comprises: whether the operation of judges need switch gear, if need to switch gear; Then whether judges is to little gear from big gear switch; If then configuration is earlier cut grade relay to switch gear, disposes multiplier again to reach required output valve; If not, then dispose multiplier earlier, configuration is cut grade relay to reach required output valve again; If need not switch gear, then in current gear, regulate output valve according to user's operative configuration multiplier.
Preferably, behind the operative configuration multiplier or the end of switching gear based on the user in the embodiment of the invention, also comprise: the step of storing current gear information.
Preferably, whether judges is to comprise to little gear from big gear switch in the embodiment of the invention: compare through the gear and the current gear information of storage that the user need be switched whether judges is to little gear from big gear switch.
On the other hand, the embodiment of the invention also provides a kind of device of in signal source, avoiding relay to cut grade noise, comprising: first judging unit, and whether the operation that is used for judges need switch gear; Second judging unit is used for when said first judgment unit judges need be switched gear, and whether judges is to little gear from big gear switch; Dispensing unit is used for when said first judgment unit judges need not switched gear, in current gear, regulating output valve according to user's operative configuration multiplier; And be used for when said second judgment unit judges be during from big gear switch to little gear, configuration is earlier cut grade relay to switch gear, disposes multiplier again to reach required output valve; And be used for when said second judgment unit judges be during from little gear switch to big gear, configuration multiplier earlier, configuration is cut grade relay to reach required output valve again.
Preferably, the embodiment of the invention comprises: memory cell is used for after said dispensing unit configuration finishes, storing current gear information.
Preferably; Second judging unit specifically is used for when said first judgment unit judges need be switched gear in the embodiment of the invention, compares through the gear and the current gear information of storage that the user need be switched whether judges is to little gear from big gear switch.
The embodiment of the invention is cut grade operation of cutting that grade situation is carried out different order through judging the various grade situation of cutting according to difference, can reach the erasure signal source generator and in cutting grade process, produce the purpose of cutting grade noise.
Description of drawings
In order to be illustrated more clearly in the embodiment of the 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; Obviously, the 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 that the gear in a kind of signal source generator constitutes sketch map in the prior art;
A kind of method flow sketch map of in signal source, avoiding relay to cut grade noise that Fig. 2 provides for the embodiment of the invention;
The another kind that Fig. 3 provides for the embodiment of the invention avoids relay to cut the method flow sketch map of grade noise in signal source;
Fig. 4 is an oscillogram of utilizing prior art to produce;
The oscillogram that method produced that Fig. 5 provides for the embodiment of the invention;
A kind of apparatus structure sketch map of in signal source, avoiding relay to cut grade noise that Fig. 6 provides for the embodiment of the invention;
The another kind that Fig. 7 provides for the embodiment of the invention avoids relay to cut the apparatus structure sketch map of grade noise in signal source.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, 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 are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
Be illustrated in figure 2 as a kind of method flow sketch map of in signal source, avoiding relay to cut grade noise that the embodiment of the invention provides, this method comprises the steps:
S201: whether the operation of judges need switch gear, then gets into step S202 if need to switch, otherwise in current gear, regulates output valve according to user's operative configuration multiplier.
The user can be provided with an output valve when the operation signal source generator, the embodiment of the invention earlier judges that according to the output valve of this setting this output valve is whether in current gear; If in current gear; Then need not cut shelves, as long as the configuration multiplier can be exported the required output valve of this user in current gear; If not in current gear, then need cut the shelves operation through following step.
S202: whether judges is to little gear, if then get into step S203 from big gear switch; If not, then get into step S204.
Certainly, this step also can judges whether be from little gear switch to big gear, if then get into step S204, then get into step S203 if not, its essence is identical with this step.It is pointed out that gear is that the peace size order is arranged, and therefore in gear switch, the switching of big or small gear can occur surely.
S203: configuration is earlier cut grade relay to switch gear, disposes multiplier again to reach required output valve.
Suppose that big gear is 3-4Vpp, little gear is 1-2Vpp, need switch to 2Vpp from 3Vpp at present; Because when the 3Vpp of big gear, the multiple of multiplier is less, and when the 2Vpp of little gear; The multiple of multiplier is bigger, if this moment the first multiple of configuration multiplier, the instantaneous output that will cause having disposed behind the multiplier becomes big at once; Promptly greater than 3Vpp, again configuration cut grade relay switch gear after, output becomes 2Vpp again; This will cause the output of signal source to form a tangible spike, promptly cuts a grade noise.But, if cutting a grade relay, this moment of configuration earlier switches gear, dispose multiplier again and just can not occur grade noise of cutting again, but carry out the transition to 2Vpp comparatively reposefully from 3Vpp greater than 3Vpp.
S204: dispose multiplier earlier, configuration is cut grade relay to reach required output valve again.
Suppose that little gear is 1-2Vpp, big gear is 3-4Vpp, need switch to 3Vpp from 2Vpp at present; Because when the 2Vpp of little gear, the multiple of multiplier is bigger, and when the 3Vpp of big gear; The multiple of multiplier is less, if configuration this moment is cut grade relay to switch gear, disposes multiplier again; Will cause having disposed the instantaneous output of cutting behind grade relay and become greatly at once, promptly greater than 3Vpp, dispose multiplier again after; Output becomes 2Vpp again, and this will cause the output of signal source to form a tangible spike, promptly cuts a grade noise.But, if this moment first configuration multiplier, configuration is cut grade relay and just can not occurred grade noise of cutting greater than 3Vpp more again, but carries out the transition to 3Vpp comparatively reposefully from 2Vpp.
It is thus clear that the embodiment of the invention is cut grade operation of cutting that grade situation is carried out different order through judging the various grade situation of cutting according to difference, can reach the erasure signal source generator and in cutting grade process, produce the purpose of cutting grade noise.
The another kind that being illustrated in figure 3 as the embodiment of the invention provides avoids relay to cut the method flow sketch map of grade noise in signal source, and this method comprises the steps:
S301: whether the operation of judges need switch gear, then gets into step S302 if need to switch, otherwise in current gear, regulates output valve based on user's operative configuration multiplier, and get into step S305.
S302: whether judges is to little gear, if then get into step S303 from big gear switch; If not, then get into step S304.
S303: configuration is earlier cut grade relay to switch gear, disposes multiplier again reaching required output valve, and gets into step S305.
S304: first configuration multiplier, configuration is cut grade relay reaching required output valve again, and gets into step S305.
S305: store current gear information.
Different is for the embodiment of the invention and the foregoing description, according to user's operative configuration multiplier or after switching gear and finishing, also comprises the step of storing current gear information.And then whether judges can specifically comprise to little gear from big gear switch among the step S302: compare through the gear and the current gear information of storage that the user need be switched whether judges is to little gear from big gear switch.
The embodiment of the invention is cut grade operation of cutting that grade situation is carried out different order through judging the various grade situation of cutting according to difference, can reach the erasure signal source generator and in cutting grade process, produce the purpose of cutting grade noise.
Come such scheme is described through a concrete instance below:
Suppose to switch to the 3Vpp of big gear,, and directly adopt configuration earlier to cut grade relay to switch gear if judge without gear switch from the 0Vpp of little gear; Dispose multiplier again, then can produce oscillogram (1 indicated position is 0Vpp among the figure, and the axial every lattice of y all are 2Vpp among the figure) as shown in Figure 4; And if employing the present invention judges through gear switch earlier, adopt elder generation's configuration multiplier based on judged result again; Dispose the mode of cutting grade relay again, then can produce oscillogram as shown in Figure 5.Visible by Fig. 4, a bigger spike has appearred when not adopting changing method of the present invention, the 3Vpp of this spike after switch, and visible by Fig. 5, when switching gear, be from the 0Vpp smooth transition to 3Vpp, promptly eliminated and cut a grade noise.
Be illustrated in figure 6 as a kind of apparatus structure sketch map of in signal source, avoiding relay to cut grade noise that the embodiment of the invention provides; This device comprises: first judging unit 610, second judging unit 620 and dispensing unit 630; First judging unit 610 links to each other with second judging unit 620, and dispensing unit 630 links to each other with first judging unit 610 and second judging unit 620 respectively.
Whether the operation that first judging unit 610 is used for judges need switch gear.The user can be provided with an output valve when the operation signal source generator, first judging unit 610 judges that based on the output valve of this setting this output valve whether in current gear, if in current gear, then need not cut shelves, otherwise then need cut shelves earlier.
The embodiment of the invention is cut grade operation of cutting that grade situation is carried out different order through judging the various grade situation of cutting according to difference, can reach the erasure signal source generator and in cutting grade process, produce the purpose of cutting grade noise.
The another kind that being illustrated in figure 7 as the embodiment of the invention provides avoids relay to cut the apparatus structure sketch map of grade noise in signal source; This device comprises: first judging unit 710, second judging unit 720, dispensing unit 730 and memory cell 740; First judging unit 710 links to each other with second judging unit 720, and dispensing unit 730 links to each other with first judging unit 710, second judging unit 720 and memory cell 740 respectively.
The embodiment of the invention is cut grade operation of cutting that grade situation is carried out different order through judging the various grade situation of cutting according to difference, can reach the erasure signal source generator and in cutting grade process, produce the purpose of cutting grade noise.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Can instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
Above-described embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. a method of in signal source, avoiding relay to cut grade noise is characterized in that, said method comprises:
Whether the operation of judges need switch gear, if need to switch gear, then whether judges is to little gear, if then configuration is earlier cut grade relay to switch gear, disposes multiplier again to reach required output valve from big gear switch; If not, then dispose multiplier earlier, configuration is cut grade relay to reach required output valve again;
If need not switch gear, then in current gear, regulate output valve based on user's operative configuration multiplier.
2. the method for claim 1 is characterized in that, behind the operative configuration multiplier or the end of switching gear according to the user, also comprises: the step of storing current gear information.
3. method as claimed in claim 2 is characterized in that, whether said judges is to comprise to little gear from big gear switch:
Gear through the user need be switched compares with the current gear information of storage whether judges is to little gear from big gear switch.
4. a device of in signal source, avoiding relay to cut grade noise is characterized in that, comprising:
First judging unit, whether the operation that is used for judges need switch gear;
Second judging unit is used for when said first judgment unit judges need be switched gear, and whether judges is to little gear from big gear switch;
Dispensing unit is used for when said first judgment unit judges need not switched gear, in current gear, regulating output valve according to user's operative configuration multiplier; And be used for when said second judgment unit judges be during from big gear switch to little gear, configuration is earlier cut grade relay to switch gear, disposes multiplier again to reach required output valve; And be used for when said second judgment unit judges be during from little gear switch to big gear, configuration multiplier earlier, configuration is cut grade relay to reach required output valve again.
5. device as claimed in claim 4 is characterized in that, also comprises:
Memory cell is used for after said dispensing unit configuration finishes, storing current gear information.
6. device as claimed in claim 5; It is characterized in that; Said second judging unit specifically is used for when said first judgment unit judges need be switched gear, compares through the gear and the current gear information of storage that the user need be switched whether judges is to little gear from big gear switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010531176.1A CN102468823B (en) | 2010-11-03 | 2010-11-03 | The method and apparatus of gear switching noise of relay is avoided in signal source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010531176.1A CN102468823B (en) | 2010-11-03 | 2010-11-03 | The method and apparatus of gear switching noise of relay is avoided in signal source |
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| Publication Number | Publication Date |
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| CN102468823A true CN102468823A (en) | 2012-05-23 |
| CN102468823B CN102468823B (en) | 2015-12-02 |
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| CN201010531176.1A Active CN102468823B (en) | 2010-11-03 | 2010-11-03 | The method and apparatus of gear switching noise of relay is avoided in signal source |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1142250A2 (en) * | 1999-01-07 | 2001-10-10 | Ericsson, Inc. | Power i-q modulation systems and methods using predistortion circuit |
| CN1354910A (en) * | 2000-02-08 | 2002-06-19 | 艾利森公司 | Noise management technique for switched voltage supply |
| CN1461532A (en) * | 2000-11-03 | 2003-12-10 | 高通股份有限公司 | Apparatus for reducing phase noise in local carrier signal caused by powering down of circuit elements during discontinuous data transmissions |
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2010
- 2010-11-03 CN CN201010531176.1A patent/CN102468823B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1142250A2 (en) * | 1999-01-07 | 2001-10-10 | Ericsson, Inc. | Power i-q modulation systems and methods using predistortion circuit |
| CN1354910A (en) * | 2000-02-08 | 2002-06-19 | 艾利森公司 | Noise management technique for switched voltage supply |
| CN1461532A (en) * | 2000-11-03 | 2003-12-10 | 高通股份有限公司 | Apparatus for reducing phase noise in local carrier signal caused by powering down of circuit elements during discontinuous data transmissions |
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| CN102468823B (en) | 2015-12-02 |
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