CN204945865U - A kind of two phased three-phase type power adjusting circuits - Google Patents
A kind of two phased three-phase type power adjusting circuits Download PDFInfo
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- CN204945865U CN204945865U CN201520628383.7U CN201520628383U CN204945865U CN 204945865 U CN204945865 U CN 204945865U CN 201520628383 U CN201520628383 U CN 201520628383U CN 204945865 U CN204945865 U CN 204945865U
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Abstract
The utility model proposes a kind of two phased three-phase type power adjusting circuits, comprise the first modulate circuit in parallel and the second modulate circuit, described first modulate circuit access standard industrial process signals, described second modulate circuit access PWM level signal, described first modulate circuit and described second modulate circuit are connected with inner selection circuit, described second modulate circuit is the modulate circuit that can receive PWM level signal based on photoelectric coupling circuit, comprise photoelectronic coupler, two input end access PWM level signals of described photoelectronic coupler, the output terminal of described photoelectronic coupler connects described selection circuit, for many industry spot still adopt signal instrument directly control photoelectronic coupler realize industry heating control scheme, user is without the need to changing signal meter type, can on original signal meter contact, by the given way of adjustment PWM level signal, realize system upgrade, avoid the wasting of resources.
Description
Technical field
The utility model belongs to power control techniques field, particularly a kind of two phased three-phase type power adjusting circuits.
Background technology
At present, along with the development of Power Electronic Technique, the power of controlled silicon adjuster based on IGBT group technology is applied to increasing industrial control field gradually, as the computer heating control, metallurgy, chemical industry, textile machine etc. of industrial furnace.Power of controlled silicon adjuster is a kind of electronic equipment controlling to carry out bearing power corresponding adjustment by outside Setting signal, Setting signal kind comprises the simulating signals such as 0-20mA, 0-5V, 0-10V, 4-20mA, 1-5V, belong to industry standard signal, and input signal is stable not, wherein one or more only supported mostly by power of controlled silicon adjuster in the market, and do not support that the level signal of PWM mode is given.And many industry spot still adopt signal instrument (exporting PWM level signal) directly to control the scheme that photoelectronic coupler realizes industrial furnace computer heating control, when wanting to upgrade to power of controlled silicon adjuster control program, just need to use the signal instrument exporting analog quantity (0-20mA etc.) instead, thus cause original signal instrument to be left unused, cause the wasting of resources.
Therefore, need now a kind of two phased three-phase type power adjusting circuits badly, can meet and can not only support that standard industrial process signals inputs, can also support that PWM level signal inputs, and ensureing stable, the low interference of input signal, user realizes switching according to different demand.
Utility model content
The utility model proposes one, solve in prior art and only support standard industrial process signals to input and the stable not problem of input signal.
The technical solution of the utility model is achieved in that the utility model provides a kind of two phased three-phase type power adjusting circuits, comprise the first modulate circuit and the second modulate circuit, described first modulate circuit access standard industry level signal, described second modulate circuit access PWM level signal, described first modulate circuit and described second modulate circuit are connected with inner selection circuit.
As one preferred embodiment, described second modulate circuit comprises photoelectronic coupler, and two input end access PWM level signals of described photoelectronic coupler, the output terminal of described photoelectronic coupler connects described selection circuit.
As one preferred embodiment, described second modulate circuit comprises a photoelectronic coupler, described in first pin of described photoelectronic coupler connects PWM level signal positive terminal by the 7th resistance, the second pin of photoelectronic coupler connects the negative terminal of PWM level signal, 3rd pin earth terminal of described photoelectronic coupler, 4th pin of described photoelectronic coupler is by the 8th resistance access DC level signal, and the 4th pin of described photoelectronic coupler is connected with selection circuit by the 9th resistance.
As one preferred embodiment, described standard industrial process signals is any one of 0-20mA, 0-5V, 4-20mA or 1-5V level signal.
As one preferred embodiment, described inner selection circuit other end linkage function circuit.
As one preferred embodiment, described inner selection circuit is on-off circuit.
As one preferred embodiment, described first modulate circuit comprises transforming circuit.
As one preferred embodiment, described first modulate circuit also comprises RC filtering circuit.
As one preferred embodiment, described RC filtering circuit is T-shape filtering circuit.
As one preferred embodiment, described T-shape filtering circuit comprises the 3rd electric capacity that the first resistance and the second resistance and one end connect the intermediate node of the first resistance and the second resistance.
After have employed technique scheme, the beneficial effects of the utility model are: the utility model two phased three-phase type power adjusting circuit is by the transforming circuit in the first modulate circuit and filtering circuit access standard industrial process signals, whole standard industrial process signals can not only be supported, user is facilitated to select flexibly according to actual conditions, transformation and filtering can also be carried out to the standard industrial process signals of input, while meeting incoming level intensity, ensure the standard industrial process signals quality of input; In addition, signal instrument (exporting PWM level signal) is still adopted directly to control the scheme that photoelectronic coupler realizes industrial furnace computer heating control for many industry spot, user is without the need to changing signal meter type, can on the original signal meter contact of use, adopt PWM level signal given way, realize system upgrade, thus save upgrade cost, avoid the wasting of resources; Because common PWM level signal is direct current 12V or 24V, magnitude of voltage is much higher than the recognizable set of custom circuit, therefore need to carry out level conversion to PWM level signal, be namely converted to direct current 5V level signal from direct current 12V or 24V, be then input to other circuit and be for further processing.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the block diagram of the utility model two-phase three control type power adjusting circuit;
Fig. 2 is the second modulate circuit circuit diagram of the utility model two-phase three control type power adjusting circuit;
Fig. 3 is the T-shape filtering circuit circuit diagram of the utility model two-phase three control type power adjusting circuit.
In figure, R7-the 7th resistance; R8-the 8th resistance; R9-the 9th resistance; C3-the 3rd electric capacity; R1-first resistance; R2-second resistance; OPT01-photoelectronic coupler.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model two-phase three control type power adjusting circuit comprises the first modulate circuit and the second modulate circuit, described first modulate circuit access standard industry level signal, described second modulate circuit access PWM level signal, described first modulate circuit and described second modulate circuit are connected with inner selection circuit.
Please refer to Fig. 2 and Fig. 3, the utility model is by the first modulate circuit access standard industrial process signals, realize the access of standard industrial process signals, standard industrial process signals is 0-20mA, 0-5V, any one of 4-20mA or 1-5V level signal, and transformation and filtering process are carried out to standard industrial process signals, concrete filtration process can adopt T-shape filtering circuit as shown in Figure 3 to carry out filtering process, T-shape filtering circuit comprises the 3rd electric capacity C3 that the first resistance R1 and the second resistance R2 and one end connect the intermediate node of the first resistance R1 and the second resistance R2, ensure that the input of standard industrial process signals had not only balanced but also without too large noise, in addition, by the second modulate circuit access PWM level signal, described second modulate circuit comprises a photoelectronic coupler OPT01, described in first pin of described photoelectronic coupler OPT01 connects PWM level signal positive terminal by the 7th resistance R7, second pin of photoelectronic coupler OPT01 connects the negative terminal of PWM level signal, the 3rd pin earth terminal of described photoelectronic coupler OPT01, 4th pin of described photoelectronic coupler OPT01 accesses DC level signal by the 8th resistance R8, 4th pin of described photoelectronic coupler OPT01 is connected with selection circuit by the 9th resistance R9, the given Principles of Regulation of PWM level signal, PWM level signal peak pulse duration is regulated by the effective pulse width in regulating cycle T, namely sizing is given, the conditioning of different PWM level signal can be realized, its computing formula is as follows: peak pulse duration=effective pulse width (W)/recurrence interval (T) * 100%, effective pulse width can be high-level pulse width, what also can be that low level pulse width generally adopts identification is that the device of high-level pulse width carries out circuit design and is advisable, selection circuit adopts switch selection circuit, and can adopt hand switch, staff manually operates the switching carrying out input signal, thus meets different effective Setting signal inputs.
The utility model two phased three-phase type power adjusting circuit is by the transforming circuit in the first modulate circuit and filtering circuit access standard industrial process signals, whole standard industrial process signals can not only be supported, user is facilitated to select flexibly according to actual conditions, transformation and filtering can also be carried out to the standard industrial process signals of input, while meeting incoming level intensity, ensure the standard industrial process signals quality of input; In addition, signal instrument (exporting PWM level signal) is still adopted directly to control the scheme that photoelectronic coupler OPT01 realizes industrial furnace computer heating control for many industry spot, user is without the need to changing signal meter type, can on the original signal meter contact of use, adopt PWM level signal given way, realize system upgrade, thus save upgrade cost, avoid the wasting of resources; Because common PWM level signal is direct current 12V or 24V, magnitude of voltage is much higher than the recognizable set of custom circuit, therefore need to carry out level conversion to PWM level signal, be namely converted to direct current 5V level signal from direct current 12V or 24V, be then input to other circuit and be for further processing.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (7)
1. a phased three-phase type power adjusting circuit, it is characterized in that, comprise the first modulate circuit and the second modulate circuit, described first modulate circuit access standard industry level signal, described second modulate circuit access PWM level signal, described first modulate circuit and described second modulate circuit are connected with selection circuit.
2. two phased three-phase type power adjusting circuits according to claim 1, it is characterized in that, described second modulate circuit is the modulate circuit that can receive PWM level signal based on photoelectric coupling circuit, comprise a photoelectronic coupler, two input end access PWM level signals of described photoelectronic coupler, the output terminal of described photoelectronic coupler connects described selection circuit.
3. two phased three-phase type power adjusting circuits according to claim 2, it is characterized in that, described second modulate circuit comprises a photoelectronic coupler, described in first pin of described photoelectronic coupler connects PWM level signal positive terminal by the 7th resistance, the second pin of photoelectronic coupler connects the negative terminal of PWM level signal, 3rd pin earth terminal of described photoelectronic coupler, 4th pin of described photoelectronic coupler is by the 8th resistance access DC level signal, and the 4th pin of described photoelectronic coupler is connected with selection circuit by the 9th resistance.
4. two phased three-phase type power adjusting circuits according to claim 1, is characterized in that, described standard industrial process signals is any one of 0-20mA, 0-5V, 4-20mA or 1-5V level signal.
5. according to any one of claim 1-4 two phased three-phase type power adjusting circuits, it is characterized in that, described first modulate circuit is RC filtering circuit.
6. two phased three-phase type power adjusting circuits according to claim 5, it is characterized in that, described RC filtering circuit is T-shape filtering circuit.
7. two phased three-phase type power adjusting circuits according to claim 6, it is characterized in that, described T-shape filtering circuit comprises the 3rd electric capacity that the first resistance and the second resistance and one end connect the intermediate node of the first resistance and the second resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520628383.7U CN204945865U (en) | 2015-08-19 | 2015-08-19 | A kind of two phased three-phase type power adjusting circuits |
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| CN201520628383.7U CN204945865U (en) | 2015-08-19 | 2015-08-19 | A kind of two phased three-phase type power adjusting circuits |
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| CN204945865U true CN204945865U (en) | 2016-01-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247628A (en) * | 2018-08-31 | 2019-01-22 | 广东默菲健康科技有限公司 | Intelligent chest pad with skin water oil detection function and for the cradle of the chest pad |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109247628A (en) * | 2018-08-31 | 2019-01-22 | 广东默菲健康科技有限公司 | Intelligent chest pad with skin water oil detection function and for the cradle of the chest pad |
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