CN204696659U - A kind of motor protector signal processing circuit - Google Patents
A kind of motor protector signal processing circuit Download PDFInfo
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- CN204696659U CN204696659U CN201520434262.9U CN201520434262U CN204696659U CN 204696659 U CN204696659 U CN 204696659U CN 201520434262 U CN201520434262 U CN 201520434262U CN 204696659 U CN204696659 U CN 204696659U
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Abstract
The utility model discloses a kind of motor protector signal processing circuit, circuit structure comprises the first to the tenth resistance, first to fourth electric capacity, the first to the 3rd diode and first, second amplifier.The protector adopting the utility model to design is mainly used in the monitoring to motoring; and the faults such as the startup occurred in production run process for motor is overtime, under-voltage, overvoltage, underload, overload, short circuit, stall/obstruction, disconnected phase, imbalance, residual current (ground connection/electric leakage) are protected; motor is made to be unlikely to cause because of above reason damaging; thus production is suffered a loss; the design effectively can improve the fail safe of motor running; reducing production loss, is the ideal substitute of traditional thermal relay.
Description
Technical field
The utility model discloses a kind of motor protector signal processing circuit, relate to power electronic equipment technical field.
Background technology
The effect of motor protector is to the comprehensive protecting control of motor, and when overcurrent, undercurrent, disconnected phase, stall, short circuit, overvoltage, under-voltage, electric leakage, three-phase imbalance, overheated, ground connection, bearing wear, rotor bias appear in motor, winding is aging is reported to the police or protecting control.
Thermal relay is the sheet metal mechanical type electric machine overload protective device that early fifties introduces Soviet Union's technological development.It has inverse time lag performance and the simple feature of structure in protection electromotor overload.But it is few to there is function, without open phase protection, occur to ventilate to motor not smooth, sweep thorax, stall, transship for a long time; The faults such as frequent starting do not shield.This mainly because thermal relay operation curve and motor real protection curve inconsistent, lose protective effect.And Repeatability is poor, can not reuse after big current overload or short trouble, alignment error is large, be subject to ambient temperature affect malfunction or tripping, the defects such as power consumption is large, consumptive material is many, performance index are backward.
Temperature relay adopts the disc type made of bimetal leaf or other forms of relay, has that structure is simple, reliable in action, the advantages such as protection range is extensive, but slow in one's movements, and return time is long, and the delta connection motor of more than 3KW should not use.Nowadays use in a large number in electric fan, refrigerator, compressor of air conditioner etc.
Electronic motor protector develops into integrated circuit by transistor and has developed into micro-chip processor thick mould circuit so far, is functionally generally divided into open phase protection, integrated protection (multifunction protection), temperature protection and intelligent protection.This type of protector have energy-conservation, be active in one's movements, the advantage such as accuracy is high, impact resisting vibrating, reproducible, defencive function is complete, power consumption is little.
The design of intelligent motor protector comprehensive in the market mainly adopts the scheme of AC sampling mode+High Performance SCM; adopt that the motor protector measurement parameter of this method for designing is many, certainty of measurement is high, can provide more perfect defencive function; but adopt the cost of this method for designing higher; selling price is also high, does not have cost performance to say only needing the occasion providing overload to motor, disconnected equal basic most common failure is protected.
Utility model content
Technical problem to be solved in the utility model is: for the defect of prior art; a kind of motor protector signal processing circuit is provided; make corresponding motor protector have design succinct, defencive function is more, can meet the feature of most of motor protection requirement.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of motor protector signal processing circuit, comprises the first to the tenth resistance, first to fourth electric capacity, the first to the 3rd diode and first, second amplifier, wherein,
The ac input end of circuit is parallel to the two ends of the first resistance, and one end of the first resistance is connected with one end of the first electric capacity, the positive input terminal of the first amplifier, one end of the 4th resistance respectively after the second resistance, the other end ground connection of the 4th resistance, the other end of the first resistance is connected with the other end of the first electric capacity, the negative input end of the first amplifier, the positive pole of the first diode, one end of the tenth resistance respectively after the 3rd resistance, the output of the first amplifier respectively with the negative pole of the first diode, the positive pole of the second diode is connected, the negative pole of the second diode respectively with the other end of the tenth resistance, one end of 5th resistance is connected, the other end of the 5th resistance respectively with one end of the second electric capacity, one end of 6th resistance is connected, the other end ground connection of the second electric capacity, the other end of the 6th resistance is connected with the positive input terminal of the second amplifier, upper pull end ground connection after the 3rd electric capacity of the second amplifier, the lower pull end of the second amplifier is connected with the negative pole of the 3rd diode and ground connection, the negative input end of the second amplifier respectively with one end of the 7th resistance, one end of 8th resistance is connected, the other end of the 7th resistance is connected with the positive pole of the 3rd diode, the other end of the 8th resistance respectively with the output of the second amplifier, one end of 9th resistance is connected, other end ground connection after the 4th electric capacity of the 9th resistance.
As further preferred version of the present utility model, described second electric capacity, the 4th electric capacity are the minus earth of polar capacitor, polar capacitor.
As further preferred version of the present utility model, the concrete model of described first amplifier is LM6161.
As further preferred version of the present utility model, the concrete model of described second amplifier is LM6164.
As further preferred version of the present utility model, described 3rd electric capacity is filter capacitor.
The utility model adopts above technical scheme compared with prior art, there is following technique effect: the protector adopting the utility model to design is mainly used in the monitoring to motoring, and for the startup time-out that motor occurs in production run process, under-voltage, overvoltage, underload, overload, short circuit, stall/obstruction, disconnected phase, uneven, the faults such as residual current (ground connection/electric leakage) are protected, motor is made to be unlikely to cause because of above reason damaging, thus production is suffered a loss, the design effectively can improve the fail safe of motor running, reduce production loss, it is the ideal substitute of traditional thermal relay.
Accompanying drawing explanation
Fig. 1 is circuit connection diagram of the present utility model,
Wherein: R1 to R10 is the first to the tenth resistance, and C1 to C4 is first to fourth electric capacity, D1 to D3 is the first to the 3rd diode, and A1, A2 are respectively first, second amplifier.
Embodiment
Be described below in detail execution mode of the present utility model, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the utility model, and can not being interpreted as restriction of the present utility model.
Those skilled in the art of the present technique are understandable that, the correlation module related in the utility model and the function of realization thereof are the devices of hardware after improvement and formation thereof, device or system carry computer software programs conventional in prior art or pertinent protocols just can realize, and are not improve computer software programs of the prior art or pertinent protocols.Such as, the computer hardware system after improvement still can realize the specific function of this hardware system by loading existing operation system of software.Therefore, be understandable that, innovation of the present utility model is the improvement of hardware module in prior art and connects syntagmatic, but not be only in hardware module for realizing the improvement of software or the agreement of carrying about function.
Those skilled in the art of the present technique are understandable that, the correlation module mentioned in the utility model is the one or more hardware device for performing in step in operation, method, flow process described in the application, measure, scheme.Described hardware device for required object and specialized designs and manufacture, or also can adopt the known device in all-purpose computer or other known hardware devices.Described all-purpose computer activates or reconstructs with having storage procedure Selection within it.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification of the present utility model " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.Should be appreciated that, when we claim element to be " connected " or " coupling " to another element time, it can be directly connected or coupled to other elements, or also can there is intermediary element.In addition, " connection " used herein or " coupling " can comprise wireless connections or couple.Wording "and/or" used herein comprises one or more arbitrary unit listing item be associated and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology) have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the utility model.Should also be understood that those terms defined in such as general dictionary should be understood to have the meaning consistent with the meaning in the context of prior art, unless and define as here, can not explain by idealized or too formal implication.
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
Circuit connection diagram of the present utility model as shown in Figure 1, described motor protector signal processing circuit, comprise the first to the tenth resistance, first to fourth electric capacity, first to the 3rd diode and first, second amplifier, wherein, the ac input end of circuit is parallel to the two ends of the first resistance, one end of first resistance is connected with one end of the first electric capacity, the positive input terminal of the first amplifier, one end of the 4th resistance respectively after the second resistance, the other end ground connection of the 4th resistance, the other end of the first resistance is connected with the other end of the first electric capacity, the negative input end of the first amplifier, the positive pole of the first diode, one end of the tenth resistance respectively after the 3rd resistance, the output of the first amplifier respectively with the negative pole of the first diode, the positive pole of the second diode is connected, the negative pole of the second diode respectively with the other end of the tenth resistance, one end of 5th resistance is connected, the other end of the 5th resistance respectively with one end of the second electric capacity, one end of 6th resistance is connected, the other end ground connection of the second electric capacity, the other end of the 6th resistance is connected with the positive input terminal of the second amplifier, upper pull end ground connection after the 3rd electric capacity of the second amplifier, the lower pull end of the second amplifier is connected with the negative pole of the 3rd diode and ground connection, the negative input end of the second amplifier respectively with one end of the 7th resistance, one end of 8th resistance is connected, the other end of the 7th resistance is connected with the positive pole of the 3rd diode, the other end of the 8th resistance respectively with the output of the second amplifier, one end of 9th resistance is connected, other end ground connection after the 4th electric capacity of the 9th resistance.
In a specific embodiment of the present utility model, described second electric capacity, the 4th electric capacity are the minus earth of polar capacitor, polar capacitor.
In a specific embodiment of the present utility model, the concrete model of described first amplifier is LM6161.
In a specific embodiment of the present utility model, the concrete model of described second amplifier is LM6164.
In a specific embodiment of the present utility model, described 3rd electric capacity is filter capacitor.
By reference to the accompanying drawings execution mode of the present utility model is explained in detail above, but the utility model is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also make a variety of changes under the prerequisite not departing from the utility model aim.The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to technical spirit of the present utility model, within spirit of the present utility model and principle, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solutions of the utility model.
Claims (5)
1. a motor protector signal processing circuit, is characterized in that: comprise the first to the tenth resistance, first to fourth electric capacity, the first to the 3rd diode and first, second amplifier, wherein,
The ac input end of circuit is parallel to the two ends of the first resistance, and one end of the first resistance is connected with one end of the first electric capacity, the positive input terminal of the first amplifier, one end of the 4th resistance respectively after the second resistance, the other end ground connection of the 4th resistance, the other end of the first resistance is connected with the other end of the first electric capacity, the negative input end of the first amplifier, the positive pole of the first diode, one end of the tenth resistance respectively after the 3rd resistance, the output of the first amplifier respectively with the negative pole of the first diode, the positive pole of the second diode is connected, the negative pole of the second diode respectively with the other end of the tenth resistance, one end of 5th resistance is connected, the other end of the 5th resistance respectively with one end of the second electric capacity, one end of 6th resistance is connected, the other end ground connection of the second electric capacity, the other end of the 6th resistance is connected with the positive input terminal of the second amplifier, upper pull end ground connection after the 3rd electric capacity of the second amplifier, the lower pull end of the second amplifier is connected with the negative pole of the 3rd diode and ground connection, the negative input end of the second amplifier respectively with one end of the 7th resistance, one end of 8th resistance is connected, the other end of the 7th resistance is connected with the positive pole of the 3rd diode, the other end of the 8th resistance respectively with the output of the second amplifier, one end of 9th resistance is connected, other end ground connection after the 4th electric capacity of the 9th resistance.
2. a kind of motor protector signal processing circuit as claimed in claim 1, is characterized in that: described second electric capacity, the 4th electric capacity are the minus earth of polar capacitor, polar capacitor.
3. a kind of motor protector signal processing circuit as claimed in claim 1, is characterized in that: the concrete model of described first amplifier is LM6161.
4. a kind of motor protector signal processing circuit as claimed in claim 1, is characterized in that: the concrete model of described second amplifier is LM6164.
5. a kind of motor protector signal processing circuit as claimed in claim 1, is characterized in that: described 3rd electric capacity is filter capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434262.9U CN204696659U (en) | 2015-06-19 | 2015-06-19 | A kind of motor protector signal processing circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520434262.9U CN204696659U (en) | 2015-06-19 | 2015-06-19 | A kind of motor protector signal processing circuit |
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| CN204696659U true CN204696659U (en) | 2015-10-07 |
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| CN201520434262.9U Expired - Fee Related CN204696659U (en) | 2015-06-19 | 2015-06-19 | A kind of motor protector signal processing circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059441A (en) * | 2016-07-26 | 2016-10-26 | 佛山市顺德区海伦宝电器有限公司 | Stepless speed regulating AC control device for single phase AC motor of fan or cold fan |
-
2015
- 2015-06-19 CN CN201520434262.9U patent/CN204696659U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106059441A (en) * | 2016-07-26 | 2016-10-26 | 佛山市顺德区海伦宝电器有限公司 | Stepless speed regulating AC control device for single phase AC motor of fan or cold fan |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20160619 |
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| CF01 | Termination of patent right due to non-payment of annual fee |