CN110762007B - Automatic identification system for variable-frequency screw compressor controller - Google Patents
Automatic identification system for variable-frequency screw compressor controller Download PDFInfo
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- CN110762007B CN110762007B CN201911055269.9A CN201911055269A CN110762007B CN 110762007 B CN110762007 B CN 110762007B CN 201911055269 A CN201911055269 A CN 201911055269A CN 110762007 B CN110762007 B CN 110762007B
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- 238000003745 diagnosis Methods 0.000 claims abstract description 6
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- 238000012544 monitoring process Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims description 10
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- 230000004044 response Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 5
- 230000006872 improvement Effects 0.000 description 3
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- 238000005457 optimization Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/08—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by varying the rotational speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/28—Safety arrangements; Monitoring
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- General Engineering & Computer Science (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses an automatic identification system of a variable-frequency screw compressor controller, which comprises a controller and a frequency converter, wherein the controller is used for operating, monitoring and measuring technological parameters, running/stopping states, fault diagnosis and the like of the variable-frequency screw compressor, and the frequency converter is used for executing instructions of the controller to drive a motor and feeding back electrical information to the controller; when the variable-frequency screw compressor runs, the controller sends a feature code to the frequency converter, the frequency converter starts the automatic identification system after receiving the feature code, the controller and the frequency converter generate random numbers and cross each other, the controller and the frequency converter respectively calculate and mutually verify according to the random numbers and the feature code, and the controller and the frequency converter are automatically identified after verification is completed, so that the optimal matching is achieved; the automatic identification of the controller and the frequency converter is realized, the high performance, the good process, the full protection and the like of the controller are perfectly combined with the high precision, the fast response and the like of the frequency converter, and the maximum effect is exerted.
Description
Technical Field
The invention relates to the field of variable frequency screw compressors, in particular to an automatic identification system for a controller of a variable frequency screw compressor.
Background
The variable frequency screw compressor is mechanical equipment with wide application, and is applied to the fields of machinery, metallurgy, textile, food and the like; to the occasion that uses frequency conversion helical-lobe compressor, except the maintenance of three filtration consumptive materials of frequency conversion helical-lobe compressor, along with life cycle's extension, the maintenance and the change of key spare part are in the difficult exemption, compare mechanical parts appearance, hard index such as size distinguishes the discernment easily and does not make mistakes, the maintenance of electric spare part is changed more and is involved in the discernment of the soft strength of electric property, including software version number and functional setting etc. quick high-efficient accurate maintenance change key major electric spare part, for example: a frequency converter, a controller; has become a new subject which is concerned about and is urgently solved; in the prior art, for maintenance and replacement of a frequency converter or a controller, generally, a label of the frequency converter or the controller or configuration information of a variable frequency screw compressor is used, and of course, the label or the configuration information of an electric component is very detailed at present, the type, the specification and the like of the frequency converter or the controller are clear, and a use specification, an electric drawing and the like can be basically determined, but due to different use conditions and occasions and the like, the frequency converter or the controller is continuously optimized in performance, so that the performance of the screw compressor is more superior, the optimization may be embodied by fine adjustment of a certain parameter of the frequency converter or the controller, repair of a software BUG of the frequency converter or the controller, synchronous optimization of the frequency converter and the controller, and the like, and under the condition, problems can occur when the frequency converter or the controller is maintained and replaced: the frequency converter or the controller is in a continuous market, and the frequency converter or the controller which is maintained and replaced cannot be guaranteed to be superior to the frequency converter or the controller which is maintained and replaced, so that the frequency converter or the controller is inconsistent in version, the control requirement that the controller is not required to be updated is easily caused, the frequency converter cannot be well executed, the frequency converter cannot execute the updated control requirement, the controller does not have the updated control requirement, the degree of matching of the frequency converter and the controller is deficient, and the maximum effect cannot be exerted.
Disclosure of Invention
Therefore, in order to solve the above-mentioned disadvantages, the present invention provides an automatic identification system for a controller of a variable frequency screw compressor.
The invention is realized in such a way that an automatic identification system of a frequency conversion screw compressor controller is constructed, the device comprises a controller and a frequency converter, the controller is used for operating, monitoring and measuring technological parameters of the frequency conversion screw compressor and running/stopping states and fault diagnosis, the frequency converter executes instructions of the controller to drive a motor and feeds back electrical information to the controller, and the controller is connected with the frequency converter.
Preferably, the operation mode is as follows:
s1, when the variable-frequency screw compressor runs, the controller sends the feature code to the frequency converter, the frequency converter starts the automatic identification system after receiving the feature code, if the frequency converter fails to receive the feature code, the feature code is repeatedly sent for three times, and if the feature code fails to be received, an alarm prompt is given;
s2, after the automatic identification system is started, the controller sends a random number 1 to the frequency converter, and reads back a random number 2 generated by the frequency converter, the controller and the frequency converter synthesize an identification code 1 and an identification code 2 in two ways according to the random number 1 and the random number 2, so that the random number 1, the random number 2, the identification code 1 and the feature codes can form a four-dimensional array 1, and the random number 1, the random number 2, the identification code 2 and the feature codes can form a four-dimensional array 2;
s3, the controller obtains a calculation result 1 by using the CRC calculation array 1 and transmits the calculation result 1 to the frequency converter, the controller reads the frequency converter to obtain a calculation result 2 by using the CRC calculation array 1, the controller obtains a calculation result 3 by using the CRC calculation array 2 and transmits the calculation result 3 to the frequency converter, and the controller reads the frequency converter to obtain a calculation result 4 by using the CRC calculation array 2;
and S4, finally, comparing, if the calculation result 1 is equal to the calculation result 2, and meanwhile, the calculation result 3 is equal to the calculation result 4, then the verification is completed, the controller and the frequency converter are automatically identified and completed, the best matching is achieved, otherwise, the verification fails, the controller and the frequency converter recalculate and compare, and the steps are repeated, and if the verification fails three times, an alarm is given.
The invention has the following advantages: the invention provides an automatic identification system of a variable frequency screw compressor controller by improvement, and compared with the prior art, the automatic identification system has the following improvements and advantages;
the invention relates to an automatic identification system of a variable-frequency screw compressor controller, which mainly comprises a controller and a frequency converter, wherein the controller is used for operating, monitoring and measuring technological parameters, running/stopping states, fault diagnosis and the like of the variable-frequency screw compressor, and the frequency converter is used for executing instructions of the controller to drive a motor and feeding back electrical information to the controller; when the variable-frequency screw compressor runs, the controller sends a feature code to the frequency converter, the frequency converter starts the automatic identification system after receiving the feature code, the controller and the frequency converter generate random numbers and cross each other, the controller and the frequency converter respectively calculate and mutually verify according to the random numbers and the feature code, and the controller and the frequency converter are automatically identified after verification is completed, so that the optimal matching is achieved; the automatic identification of the controller and the frequency converter is realized, the high performance, the good process, the full protection and the like of the controller are perfectly combined with the high precision, the fast response and the like of the frequency converter, and the maximum effect is exerted.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a flow chart of the automatic recognition system of the controller in the present invention.
Wherein: a controller-11, a frequency converter-12, a frequency conversion screw compressor-13 and a motor-14.
Detailed Description
The present invention will be described in detail with reference to fig. 1 and 2, and the technical solutions in the embodiments of the present invention will be clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1, the automatic identification system for a frequency conversion screw compressor controller of the present invention mainly comprises a controller 11 and a frequency converter 12, wherein the controller 11 operates, monitors and measures process parameters of the frequency conversion screw compressor, and performs operation/shutdown states, fault diagnosis, etc., the frequency converter 12 executes controller instructions to drive a motor and feeds back electrical information to the controller 11, and the controller 11 is connected with the frequency converter 12;
as shown in fig. 2, when S1 and the variable-frequency screw compressor 13 are running, the controller 11 sends the feature code to the frequency converter 12, the frequency converter 12 starts the automatic identification system after receiving the feature code, if the frequency converter 12 fails to receive the feature code, the feature code is repeatedly sent three times, and if the feature code fails to be received, an alarm is given.
S2, after the automatic identification system is started, the controller 11 sends a random number 1 to the frequency converter 12, and reads back a random number 2 generated by the frequency converter 12, the controller 11 and the frequency converter 12 synthesize an identification code 1 and an identification code 2 in two ways according to the random number 1 and the random number 2, and the frequency converter 12 synthesizes the identification code 1 and the identification code 2, so that a four-dimensional array 1 can be formed by the random number 1, the random number 2, the identification code 1 and the feature codes, and a four-dimensional array 2 can be formed by the random number 1, the random number 2, the identification code 2 and the feature codes;
s3, the controller 11 uses the CRC calculation array 1 to obtain a calculation result 1 and transmits the calculation result 1 to the frequency converter 12, the controller 11 reads the frequency converter 12 and uses the CRC calculation array 1 to obtain a calculation result 2, the controller 11 uses the CRC calculation array 2 to obtain a calculation result 3 and transmits the calculation result 3 to the frequency converter 12, and the controller 11 reads the frequency converter 12 and uses the CRC calculation array 2 to obtain a calculation result 4;
and S4, finally, comparing, if the calculation result 1 is equal to the calculation result 2, and meanwhile, the calculation result 3 is equal to the calculation result 4, then the verification is completed, the controller 11 and the frequency converter 12 complete the automatic identification to achieve the best matching, otherwise, the verification fails, the controller 11 and the frequency converter 12 recalculate and compare, and the steps are repeated in this way, and if the verification fails three times, an alarm is given.
The invention provides an automatic identification system of a frequency conversion screw compressor controller through improvement, which mainly comprises a controller 11 and a frequency converter 12, wherein the controller 11 is used for operating, monitoring and measuring technological parameters, running/stopping states, fault diagnosis and the like of the frequency conversion screw compressor 13, and the frequency converter 12 is used for executing instructions of the controller 11 to drive a motor 14 and feeding back electrical information to the controller 11; when the variable-frequency screw compressor 13 runs, the controller 11 sends a feature code to the frequency converter 12, the frequency converter 12 starts an automatic identification system after receiving the feature code, the controller 11 and the frequency converter 12 mutually generate random numbers and are crossed, the controller 11 and the frequency converter 12 respectively calculate and mutually verify according to the random numbers and the feature code, and the controller 11 and the frequency converter 12 are automatically identified and complete after verification is completed, so that the best matching is achieved; the automatic identification of the controller 11 and the frequency converter 12 is realized, the high performance, the good process, the full protection and the like of the controller 11 are perfectly combined with the high precision, the fast response and the like of the frequency converter 12, and the maximum effect is exerted.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (1)
1. The utility model provides a frequency conversion screw compressor controller automatic identification system which characterized in that: the system comprises a controller (11) and a frequency converter (12), wherein the controller (11) is used for operating, monitoring and measuring process parameters, running/stopping states and fault diagnosis of a variable-frequency screw compressor (13), the frequency converter (12) executes instructions of a driving motor (14) and feeds back electrical information to the controller (11) by the controller (11), and the controller (11) is connected with the frequency converter (12);
the automatic identification system works as follows:
s1, when the variable-frequency screw compressor (13) operates, the controller (11) sends the feature code to the frequency converter (12), the automatic identification system is started after the frequency converter (12) receives the feature code, if the frequency converter (12) cannot receive the feature code, the feature code is repeatedly sent for three times, if not, an alarm is given;
s2, after the automatic identification system is started, the controller (11) sends a random number 1 to the frequency converter (12) and reads back a random number 2 generated by the frequency converter (12), the controller (11) and the frequency converter (12) synthesize an identification code 1 and an identification code 2 in two ways according to the random number 1 and the random number 2, and the frequency converter (12) can form a four-dimensional array 1 by the random number 1, the random number 2, the identification code 1 and the feature codes, and form a four-dimensional array 2 by the random number 1, the random number 2, the identification code 2 and the feature codes;
s3, the controller (11) uses the CRC calculation array 1 to obtain a calculation result 1 and transmits the calculation result 1 to the frequency converter (12), the controller (11) reads the frequency converter (12) and uses the CRC calculation array 1 to obtain a calculation result 2, the controller (11) uses the CRC calculation array 2 to obtain a calculation result 3 and transmits the calculation result 3 to the frequency converter (12), and the controller (11) reads the frequency converter (12) and uses the CRC calculation array 2 to obtain a calculation result 4;
and S4, comparing, if the calculation result 1 is equal to the calculation result 2, and meanwhile, the calculation result 3 is equal to the calculation result 4, the verification is completed, the controller (11) and the frequency converter (12) are automatically identified and complete to achieve the best matching, otherwise, the verification fails, the controller (11) and the frequency converter (12) recalculate and compare, and if the verification fails for three times, the alarm prompt is given.
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| CN201911055269.9A CN110762007B (en) | 2019-10-31 | 2019-10-31 | Automatic identification system for variable-frequency screw compressor controller |
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| CN201911055269.9A CN110762007B (en) | 2019-10-31 | 2019-10-31 | Automatic identification system for variable-frequency screw compressor controller |
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| EP1626579A1 (en) * | 2004-08-11 | 2006-02-15 | Thomson Licensing | Device pairing |
| JP5272637B2 (en) * | 2008-10-14 | 2013-08-28 | ソニー株式会社 | Information processing apparatus, encryption switching method, and program |
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| CN105871857B (en) * | 2016-04-13 | 2019-09-27 | 北京怡和嘉业医疗科技股份有限公司 | Authentication method, device, system and therapeutic equipment |
| CN106194740B (en) * | 2016-08-31 | 2018-04-03 | 安徽安凯汽车股份有限公司 | A kind of electric motor coach air compression system controller |
| CN110322600B (en) * | 2019-06-05 | 2021-02-26 | 北京深思数盾科技股份有限公司 | Control method of electronic lock and electronic lock |
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| CN1287341A (en) * | 1999-09-06 | 2001-03-14 | 胡凯 | Product number enciphering anti-fake system and method |
| CN1768502A (en) * | 2002-06-19 | 2006-05-03 | 安全通信公司 | Inter-authentication method and device |
| CN104184733A (en) * | 2014-08-26 | 2014-12-03 | 江西理工大学 | RFID lightweight-class bidirectional authentication method based on CRC coding |
| CN108304902A (en) * | 2018-02-02 | 2018-07-20 | 西安电子科技大学 | A kind of mobile RFID system mutual authentication method of extra lightweight |
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Denomination of invention: An automatic identification system for variable frequency screw compressor controller Effective date of registration: 20220819 Granted publication date: 20210525 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jinshan sub branch Pledgor: SHANGHAI SCREW COMPRESSOR Co.,Ltd. Registration number: Y2022310000188 |
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Granted publication date: 20210525 Pledgee: Shanghai Rural Commercial Bank Co.,Ltd. Jinshan sub branch Pledgor: SHANGHAI SCREW COMPRESSOR Co.,Ltd. Registration number: Y2022310000188 |