CN104881597B - Frequency converter and its user password encryption method - Google Patents
Frequency converter and its user password encryption method Download PDFInfo
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- CN104881597B CN104881597B CN201510204361.2A CN201510204361A CN104881597B CN 104881597 B CN104881597 B CN 104881597B CN 201510204361 A CN201510204361 A CN 201510204361A CN 104881597 B CN104881597 B CN 104881597B
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Abstract
The present invention relates to a kind of frequency converter and its user password encryption methods.Frequency converter includes：First storage unit, the second storage unit and control unit；Whether the first checking parameter that control unit is used to judge to be pre-stored in the first storage unit meets default correspondence with the second checking parameter for being pre-stored in the second storage unit, if satisfied, being then verified, if not satisfied, then reporting an error；Control unit is additionally operable to response user's input, and the initial password for being pre-stored in the first storage unit is updated to current password.Judge whether the first checking parameter for being pre-stored in the first storage unit meets default correspondence and will pass through change with the second checking parameter for being pre-stored in the second storage unit by control unit and operates updated password storage in the first storage unit, the frequency converter is prevented to be copied by illegal, and the safety and reliability when frequency converter work is improved, while improving the confidentiality of user password.
Description
Technical field
The present invention relates to converter technology fields, more particularly to a kind of frequency converter and its user password encryption method.
Background technology
With wideling popularize for energy-saving and emission-reduction, frequency converter is in the row such as metallurgy, oil, chemical industry, weaving, electric power, building materials, coal
Industry is widely used.Usually, frequency converter has the operation interface for functional parameter is arranged, one of which function
Be user password setting, when password input by user is only equal with the password of frequency converter storage inside, could to frequency converter into
The operations such as row functional parameter setting.Traditional frequency converter, it is general cryptographic parameter is carried out using peripheral hardware EEPROM, functional parameter is deposited
Storage, when manufacture, the storage content of peripheral hardware EEPROM is sky, in use, frequency converter can judge the corresponding storage content of particular address
Whether it is empty, if storage content is sky, frequency converter can initialize peripheral hardware EEPROM, that is, will be in internal storage space
Initial cryptographic parameter, functional parameter are written in peripheral hardware EEPROM.After user modifies to some functional parameter, modified values
Can be saved in peripheral hardware EEPROM, transducer power-down again after the power is turned on, if it is determined that particular address corresponds in peripheral hardware EEPROM
Storage content not be sky, then functional parameter in peripheral hardware EEPROM is read out to the initial value as all functional parameters.
However, if according to functional parameter in traditional frequency converter storage mode, by a new peripheral hardware EEPROM come
Original peripheral hardware EEPROM is replaced, new peripheral hardware EEPROM can be reinitialized, and user password parameter can be reduced initial value,
User password parameter originally does not recur any protective effect, and confidentiality is poor.
In addition, original peripheral hardware EERPOM is dismantled, it is easy to read in original peripheral hardware EERPOM by external device (ED)
The user password parameter of storage, and then be cracked, safety is poor.
Invention content
Based on this, it is necessary to provide a kind of confidentiality and the preferable frequency converter of safety and its user password encryption method.
A kind of frequency converter, including：First storage unit, the second storage unit and control unit；
Described control unit is used to judge to be pre-stored in the first checking parameter of first storage unit and is pre-stored in described
Whether the second checking parameter of the second storage unit meets default correspondence, if satisfied, being then verified, if not satisfied, then
It reports an error；
Described control unit is additionally operable to response user's input, and the initial password for being pre-stored in first storage unit is updated
For current password.
In one embodiment, the default correspondence of first checking parameter and second checking parameter is：
First checking parameter is equal with second checking parameter.
In one embodiment, first checking parameter and second checking parameter are production sequence number.
In one embodiment, second storage unit is additionally operable to store the functional parameter of the frequency converter.
In one embodiment, first storage unit and second storage unit are EEPROM.
A kind of user password encryption method of frequency converter, includes the following steps：
Judge to be pre-stored in the first checking parameter of the first storage unit and is pre-stored in the second verification ginseng of the second storage unit
Whether number meets default correspondence, if satisfied, being then verified, if not satisfied, then reporting an error；
User's input is responded, the initial password for being pre-stored in first storage unit is updated to current password.
In one embodiment, the default correspondence of first checking parameter and second checking parameter is：
First checking parameter is equal with second checking parameter.
In one embodiment, the functional parameter of the frequency converter is stored in second storage unit.
Frequency converter and its user password encryption method disclosed by the invention is pre-stored in the first storage by control unit judgement
First checking parameter of unit and the second checking parameter for being pre-stored in the second storage unit whether meet default correspondence and
Change will be passed through and operate updated password storage in the first storage unit, prevent the frequency converter to be copied by illegal, and carry
Safety and reliability when the high frequency converter work, while improving the confidentiality of user password.
Description of the drawings
Fig. 1 is the functional block diagram of the frequency converter of one embodiment of the invention；
Fig. 2 is the step flow chart using the user password encryption method of frequency converter shown in Fig. 1.
Specific implementation mode
As shown in Figure 1, the invention discloses a kind of frequency converters.
The frequency converter includes：First storage unit 110, the second storage unit 120 and control unit 130.
Control unit 130 is used to judge to be pre-stored in the first checking parameter of the first storage unit 110 and is pre-stored in second and deposits
Whether the second checking parameter of storage unit 120 meets default correspondence, if satisfied, being then verified, if not satisfied, then reporting
It is wrong.
In order to improve confidentiality, increase the difficulty being cracked, the first storage unit 110 is preferably to be encrypted in the frequency converter
EEPROM inside the preferable MCU chip of property.Since the EEPROM memory spaces inside MCU chip are smaller, it usually needs addition
Peripheral hardware storage unit stores the functional parameter of the frequency converter, and in the present embodiment, the second storage unit 120 is that the peripheral hardware is deposited
Storage unit, preferably EEPROM.
In the present embodiment, the default correspondence of the first checking parameter and the second checking parameter is：First checking parameter with
Second checking parameter is equal.That is, control unit 130 judges the first checking parameter for being pre-stored in the first storage unit 110
It is whether equal with the second checking parameter for being pre-stored in the second storage unit 120, if judging result is equal, it is verified, if
Judging result is unequal, then reports an error.
In practical applications, the first checking parameter and the production sequence number that the second checking parameter is the frequency converter, every
The production sequence number of the frequency converter is all different.Before frequency converter manufacture, sequence will be produced by external equipments such as computers
Row number stores EEPROM and the peripheral hardware storage unit to MCU chip respectively, that is, will production sequence number store respectively to
First storage unit 110 and the second storage unit 120.
Since 120 confidentiality of the second storage unit and safety are poor, the second checking parameter being stored therein holds
It is easily read, and then learns first checking parameter equal with the second checking parameter, in order to prevent because reading the second checking parameter
The first checking parameter is just learnt easily, in other embodiments, the default correspondence of the first checking parameter and the second checking parameter
Relationship is passes through the Encryption Algorithm such as DES, 3DES, IDEA, AES, RSA/ECC, Diffie-hellman, SHA-1/SHA-256 institute
The relationship of formation.
After the frequency converter works on power, control unit 130 is respectively from the first storage unit 110 and the second storage unit
The first checking parameter and the second checking parameter are read in 120, and judge whether the first checking parameter and the second checking parameter meet
Default correspondence is verified if the first checking parameter and the second checking parameter, which meet, is preset correspondence.Only test
After card passes through, the frequency converter just allows user to carry out the sequence of operations such as Password Input, functional parameter setting.If the first school
It tests parameter and the second checking parameter is unsatisfactory for default correspondence, then report an error, so as to learn that the frequency converter occurs the
Two storage units 120 are replaced or the abnormal conditions such as fault, and user is reminded to carry out returning factory in time to the frequency converter
Maintenance process is worked to prevent frequency converter continuation with abnormal condition, on the one hand, prevents the frequency converter from being imitated by illegal
On the other hand system improves the safety and reliability when frequency converter work.In the present invention, the mode that reports an error can be
The display screen display error code of the frequency converter, or shown by the indicator light on the frequency converter.
Control unit 130 is additionally operable to response user's input, and the initial password for being pre-stored in the first storage unit 110 is updated to
Current password.In the present invention, user's input refers to the operation being modified to password, and the manipulation change may be used in user's input
The mode of the display screen of frequency device carries out the operation of change of secret code, can also by the way of manipulating the button on the frequency converter into
The operation of row change of secret code.By user input it is updated after current password be stored in the first storage unit 110, in this implementation
In example, by user input it is updated after current password be stored in EEPROM in the frequency converter inside MCU chip, this
Sample, even if the data stored in the second storage unit 120 are read, since the second storage unit 120 is without storing user password,
Thus user password can not also be cracked, improve the confidentiality of user password.
As shown in Fig. 2, the invention also discloses a kind of user password encryption methods using frequency converter shown in Fig. 1.
The user password encryption method of frequency converter includes the following steps：
Step S201 judges to be pre-stored in the first checking parameter of the first storage unit 110 and is pre-stored in the second storage unit
Whether 120 the second checking parameter meets default correspondence, if satisfied, being then verified, if not satisfied, then reporting an error.
The initial password for being pre-stored in the first storage unit 110 is updated to current close by step S202, response user's input
Code.
First storage unit 110 is preferably the EEPROM inside the preferable MCU chip of encryption in the frequency converter.Due to
EEPROM memory spaces inside MCU chip are smaller, it usually needs add peripheral hardware storage unit to store the work(of the frequency converter
Can parameter, in the present embodiment, the second storage unit 120 is the peripheral hardware storage unit, preferably EEPROM.
By user input it is updated after current password be stored in the first storage unit 110, in the present embodiment, pass through
User input it is updated after current password be stored in EEPROM in the frequency converter inside MCU chip, even if in this way, second
The data stored in storage unit 120 are read, and since the second storage unit 120 is without storage user password, thus also can not
User password is cracked, the confidentiality of user password is improved.
In practical applications, the correct initial password of user's typing is needed, it could be to institute after being verified by control unit 130
State the operation that frequency converter carries out functional parameter setting or change of secret code.In general, the initial password of every frequency converter is all
Identical or initial password is recorded on the corresponding operation instructions of every frequency converter.
In order to realize the remote control to the frequency converter, it is provided in the frequency converter and is electrically connected with control unit 130
Reception of wireless signals module in step S202, connect for example, user controls the frequency converter by modes such as wifi, bluetooths
Input signal of the user by wireless transmission is received, the initial password for being pre-stored in the first storage unit 110 is updated to current password.
For another example, user transmits signal by LAN to control unit 130.It avoids due to the working environment where the frequency converter is severe
Influence the health of user.For example, the working environments such as toxic, dust, forceful electric power, radiation.
Frequency converter and its user password encryption method disclosed by the invention is pre-stored in first by the judgement of control unit 130
Whether the first checking parameter of storage unit 110 and the second checking parameter for being pre-stored in the second storage unit 120 meet default pair
It should be related to and change will be passed through and operate updated password storage in the first storage unit 110, prevent the frequency converter non-
Method is copied, and improves the safety and reliability when frequency converter work, while improving the confidentiality of user password.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
Cannot the limitation to the scope of the claims of the present invention therefore be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of frequency converter, which is characterized in that including：First storage unit, the second storage unit and control unit；
Described control unit is used to judge to be pre-stored in the first checking parameter of first storage unit and is pre-stored in described second
Whether the second checking parameter of storage unit meets default correspondence, if satisfied, be then verified, if not satisfied, then report an error,
The default correspondence is to be formed by relationship by Encryption Algorithm；
Described control unit is additionally operable to response user's input, and the initial password for being pre-stored in first storage unit is updated to work as
Preceding password.
2. frequency converter according to claim 1, which is characterized in that first checking parameter and second checking parameter
Default correspondence be：First checking parameter is equal with second checking parameter.
3. frequency converter according to claim 2, which is characterized in that first checking parameter and second checking parameter
To produce sequence number.
4. frequency converter according to claim 1, which is characterized in that second storage unit is additionally operable to store the frequency conversion
The functional parameter of device.
5. frequency converter according to claim 1, which is characterized in that first storage unit and second storage unit
For EEPROM.
6. a kind of user password encryption method of frequency converter, which is characterized in that include the following steps：
Judging to be pre-stored in the first checking parameter of the first storage unit and be pre-stored in the second checking parameter of the second storage unit is
It is no to meet default correspondence, if satisfied, being then verified, if not satisfied, then reporting an error；
The default correspondence is formed by Encryption Algorithm；
User's input is responded, the initial password for being pre-stored in first storage unit is updated to current password.
7. the user password encryption method of frequency converter according to claim 6, which is characterized in that first checking parameter
Default correspondence with second checking parameter is：First checking parameter is equal with second checking parameter.
8. the user password encryption method of frequency converter according to claim 6, which is characterized in that by the work(of the frequency converter
Energy parameter is stored in second storage unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510204361.2A CN104881597B (en) | 2015-04-27 | 2015-04-27 | Frequency converter and its user password encryption method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510204361.2A CN104881597B (en) | 2015-04-27 | 2015-04-27 | Frequency converter and its user password encryption method |
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| CN104881597A CN104881597A (en) | 2015-09-02 |
| CN104881597B true CN104881597B (en) | 2018-09-25 |
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| CN106341143B (en) * | 2016-09-29 | 2019-02-19 | 上海航天测控通信研究所 | A kind of self-identifying formula charged with information method and device for command receiver |
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|---|---|---|---|---|
| CN101106455A (en) * | 2007-08-20 | 2008-01-16 | 北京飞天诚信科技有限公司 | Identity authentication method and intelligent secret key device |
| CN102880838A (en) * | 2012-09-04 | 2013-01-16 | 深圳市芯海科技有限公司 | Method and device for detecting electronic equipment |
| CN103838997A (en) * | 2012-11-20 | 2014-06-04 | 海尔集团公司 | Single-chip microcomputer password verification method and device |
| CN103901798A (en) * | 2014-03-24 | 2014-07-02 | 深圳市海浦蒙特科技有限公司 | Frequency converter and frequency conversion parameter information configuration method |
| WO2015042547A1 (en) * | 2013-09-20 | 2015-03-26 | Oracle International Corporation | Web-based interface integration for single sign-on |
-
2015
- 2015-04-27 CN CN201510204361.2A patent/CN104881597B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101106455A (en) * | 2007-08-20 | 2008-01-16 | 北京飞天诚信科技有限公司 | Identity authentication method and intelligent secret key device |
| CN102880838A (en) * | 2012-09-04 | 2013-01-16 | 深圳市芯海科技有限公司 | Method and device for detecting electronic equipment |
| CN103838997A (en) * | 2012-11-20 | 2014-06-04 | 海尔集团公司 | Single-chip microcomputer password verification method and device |
| WO2015042547A1 (en) * | 2013-09-20 | 2015-03-26 | Oracle International Corporation | Web-based interface integration for single sign-on |
| CN103901798A (en) * | 2014-03-24 | 2014-07-02 | 深圳市海浦蒙特科技有限公司 | Frequency converter and frequency conversion parameter information configuration method |
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