CN204989416U - Online trouble monitored control system of submersible electric motor based on DSP - Google Patents
Online trouble monitored control system of submersible electric motor based on DSP Download PDFInfo
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- CN204989416U CN204989416U CN201520410891.8U CN201520410891U CN204989416U CN 204989416 U CN204989416 U CN 204989416U CN 201520410891 U CN201520410891 U CN 201520410891U CN 204989416 U CN204989416 U CN 204989416U
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- submersible electric
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Abstract
The utility model relates to a DSP monitoring and control technique, concretely relates to online trouble monitored control system of submersible electric motor based on DSP, include: signal acquisition element, signal conditioning circuit, sample hold circuit, analog/digital device, digital quantity buffer circuit, signal processing module, the online monitored control system of DSP and host computer, voltage that signal acquisition element will gather, electric current, vibration signal transmit to sample hold circuit through signal conditioning circuit, and sample hold circuit conveys the online monitored control system to DSP through analog/digital device and signal processing module all the way, and another way is passed through digital quantity buffer circuit and is conveyed the online monitored control system to DSP, the online monitored control system of DSP connects the host computer. The utility model discloses an unique circuit design makes the submersible electric motor signal of gathering accurate, and the inconvenient problem of traditional submersible electric motor inspection and maintenance has been solved to safety.
Description
Technical field
The utility model relates to DSP monitoring and control technology, is specifically related to the online failure monitoring system of a kind of submersible electric motor based on DSP.
Background technology
Submersible electric motor is mainly used in: submersible electric motor and pump combinationally use, or by submersible electric motor axle stretch end directly load onto pump part form pump unify product.Slip in mine water or rivers, lake, in ocean water and work in other occasion water.Have that volume is little, lightweight, prestart does not need diversion, by the degree system of suction, do not need separately to establish pump house, easy to install, dependable performance, efficiency are higher, cheap, can the advantage such as investment reduction, be widely used in fetching water from down-hole or rivers, lake, agricultural irrigation, urban water supply, industrial and mining enterprises' draining, urban and rural buildings draining, resident living water, city or plant effuent filth disposal etc.
Submersible electric motor is usually operated in rugged environment, be in for a long time run up and on-load continuous duty under.Therefore, submersible electric motor ratio is easier to break down in stator, rotor etc., and these faults of generation probably can burn out motor, if motor has damaged, normal operation has also just suspended.Want to avoid earlier such situation to occur, carry out continual monitoring to submersible electric motor operation conditions exactly, namely develop the online failure monitoring system of submersible electric motor, the failure monitoring system realizing submersible electric motor comprises two parts: hardware and software.Have inside hardware design: the power supply of supply arrangement running and peripheral pick-up unit, the sensor group gathering unlike signal, those core processors processed signal also have some to control the part of initialization, between the components responsible signal transmission.Because submersible electric motor works in water, periodic maintenance is not too convenient, so will realize from correction maintenance, scheduled maintenance to the transformation of State Maintenance.Introduce the online failure monitoring system of a kind of submersible electric motor based on DSP herein, the power by digital signal processor realizes on-line monitoring submersible electric motor fault.
Utility model content
For prior art Problems existing, the utility model provides the online failure monitoring system of a kind of submersible electric motor based on DSP, solve traditional submersible electric motor submersible electric motor ratio to be easier to break down in stator, rotor etc., fault can not get the problem detected in time.
For solving above technical matters, the utility model is achieved by the following technical programs:
The online failure monitoring system of a kind of submersible electric motor based on DSP, comprise: signal gathering unit, signal conditioning circuit, sampling hold circuit, analog-digital commutator, digital quantity buffer circuit, signal processing module, DSP online monitoring system and host computer, the voltage that described signal gathering unit will collect, electric current, vibration signal transfers to sampling hold circuit through signal conditioning circuit, sampling hold circuit one tunnel is sent to DSP online monitoring system through analog-digital commutator and signal processing module, another road is sent to DSP online monitoring system through digital quantity buffer circuit, described DSP online monitoring system connects described host computer.
Preferably, described signal gathering unit comprises: current transformer, voltage transformer (VT) and vibration transducer.
Preferably, described signal processing module adopts Wavelet Denoising Technology to carry out wavelet noise process to signal.
Beneficial effect:
The utility model provides the online failure monitoring system of a kind of submersible electric motor based on DSP, voltage, current transformer is selected to gather voltage, current signal, can isolate staff and high-tension apparatus on the one hand, the effect of transformation can be reached on the other hand, obtain normal voltage amount, and can with current protection locking each other, improve the sensitivity of protective device action; Signal conditioning circuit design considers the factor interference such as higher hamonic wave, interference, aliasing, and the standard analog signal amount after process is delivered to analog to digital converter; When carrying out A/D conversion to simulating signal, need certain switching time, within this switching time, utilize sampling hold circuit to keep substantially constant to simulating signal, ensure that the precision of conversion; Signal processing module is decomposed at many levels by analysis method of wavelet packet after the data of collection are carried out filtering process, makes the characteristic fault amount of extraction more accurate.
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 the present embodiment system schematic.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is 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.
Embodiment 1:
As shown in Figure 1,
The online failure monitoring system of a kind of submersible electric motor based on DSP, comprise: signal gathering unit, signal conditioning circuit, sampling hold circuit, analog-digital commutator, digital quantity buffer circuit, signal processing module, DSP online monitoring system and host computer, the voltage that signal gathering unit will collect, electric current, vibration signal transfers to sampling hold circuit through signal conditioning circuit, sampling hold circuit one tunnel is sent to DSP online monitoring system through analog-digital commutator and signal processing module, another road is sent to DSP online monitoring system through digital quantity buffer circuit, DSP online monitoring system connects host computer, signal gathering unit comprises: current transformer, voltage transformer (VT) and vibration transducer, signal processing module adopts Wavelet Denoising Technology to carry out wavelet noise process to signal.
Specific works process is: when submersible electric motor runs, the parameter signal of submersible electric motor is converted to electric signal by sensor, dsp system will complete the collection of stator voltage, electric current, vibration simulation signal by high-speed a/d capture card, utilize the advantage that DSP internal RAM is larger, can first by gather data temporary storage in internal RAM, then by RS485 interface circuit, data are sent to host computer.Owing to containing noise factor in the signal that collector collects, in order to obtain pure signal, the general Wavelet Denoising Technology that adopts carries out wavelet noise process to it.
The utility model provides the online failure monitoring system of a kind of submersible electric motor based on DSP, voltage, current transformer is selected to gather voltage, current signal, can isolate staff and high-tension apparatus on the one hand, the effect of transformation can be reached on the other hand, obtain normal voltage amount, and can with current protection locking each other, improve the sensitivity of protective device action; Signal conditioning circuit design considers the factor interference such as higher hamonic wave, interference, aliasing, and the standard analog signal amount after process is delivered to analog to digital converter; When carrying out A/D conversion to simulating signal, need certain switching time, within this switching time, utilize sampling hold circuit to keep substantially constant to simulating signal, ensure that the precision of conversion; Signal processing module is decomposed at many levels by analysis method of wavelet packet after the data of collection are carried out filtering process, makes the characteristic fault amount of extraction more accurate.
It should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (3)
1. the online failure monitoring system of the submersible electric motor based on DSP, it is characterized in that, comprise: signal gathering unit, signal conditioning circuit, sampling hold circuit, analog-digital commutator, digital quantity buffer circuit, signal processing module, DSP online monitoring system and host computer, the voltage that described signal gathering unit will collect, electric current, vibration signal transfers to sampling hold circuit through signal conditioning circuit, sampling hold circuit one tunnel is sent to DSP online monitoring system through analog-digital commutator and signal processing module, another road is sent to DSP online monitoring system through digital quantity buffer circuit, described DSP online monitoring system connects described host computer.
2., as claimed in claim 1 based on the online failure monitoring system of submersible electric motor of DSP, it is characterized in that: described signal gathering unit comprises: current transformer, voltage transformer (VT) and vibration transducer.
3. as claimed in claim 1 based on the online failure monitoring system of submersible electric motor of DSP, it is characterized in that: described signal processing module adopts Wavelet Denoising Technology to carry out wavelet noise process to signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520410891.8U CN204989416U (en) | 2015-06-15 | 2015-06-15 | Online trouble monitored control system of submersible electric motor based on DSP |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520410891.8U CN204989416U (en) | 2015-06-15 | 2015-06-15 | Online trouble monitored control system of submersible electric motor based on DSP |
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| Publication Number | Publication Date |
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| CN204989416U true CN204989416U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520410891.8U Expired - Fee Related CN204989416U (en) | 2015-06-15 | 2015-06-15 | Online trouble monitored control system of submersible electric motor based on DSP |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300264A (en) * | 2016-08-24 | 2017-01-04 | 肖国选 | Submersible motor protector |
| CN109524884A (en) * | 2017-09-19 | 2019-03-26 | 石家庄裕兆科技有限公司 | A kind of security protection intelligence control system of high-tension switch cabinet |
-
2015
- 2015-06-15 CN CN201520410891.8U patent/CN204989416U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300264A (en) * | 2016-08-24 | 2017-01-04 | 肖国选 | Submersible motor protector |
| CN106300264B (en) * | 2016-08-24 | 2018-09-07 | 肖国选 | Submersible motor protector |
| CN109524884A (en) * | 2017-09-19 | 2019-03-26 | 石家庄裕兆科技有限公司 | A kind of security protection intelligence control system of high-tension switch cabinet |
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| Date | Code | Title | Description |
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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: 20160120 Termination date: 20160615 |
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| CF01 | Termination of patent right due to non-payment of annual fee |