CN105115714A - Pressure calibration method and apparatus - Google Patents
Pressure calibration method and apparatus Download PDFInfo
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- CN105115714A CN105115714A CN201510569935.6A CN201510569935A CN105115714A CN 105115714 A CN105115714 A CN 105115714A CN 201510569935 A CN201510569935 A CN 201510569935A CN 105115714 A CN105115714 A CN 105115714A
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Abstract
The invention relates to a pressure calibration method and apparatus. The pressure calibration method includes the following steps that: step 1, output pressure which is currently outputted by a relay valve is obtained and is adopted as current output pressure; step 2, whether the current output pressure satisfies preset conditions is judged, if the current output pressure does not satisfy the preset conditions, a calibration parameter corresponding to the current input pressure is obtained, and the calibration parameter is utilized to calibrate input pressure which generates the current output pressure, so that current input pressure can be obtained; and step 3, output pressure generated by the current input pressure is obtained and is adopted as current output pressure, and the step 2 is executed until the current output pressure satisfies the preset conditions. According to the pressure calibration method and apparatus, the input pressure which generates the current output pressure is calibrated, so that the calibration of the output pressure of the relay valve can be realized, and therefore, the output pressure which satisfies the preset conditions can be obtained, and the output pressure can be further utilized to realize accurate control on a related actuator, and thus, the individual difference of the internal structure of the relay valve will not affect by the accuracy of the control of the relay valve on the related actuator.
Description
Technical field
The present invention relates to relay valve technical field, more particularly, relate to a kind of pressure calibration method and device.
Background technology
Relay valve is very crucial parts in locomotive braking system, and its major function is output to relevant topworks after being amplified by the pressure inputing to relay valve, is amplified to output pressure and exports by input pressure according to amplification coefficient.
Wherein, amplification coefficient is determined by relay valve itself.But inventor finds, because relay valve is mechanical valve base part, the inner structure of different relay valves exists certain individual difference.Therefore, for the relay valve that amplification coefficient is in theory identical, when input pressure one timing, its output pressure may not be identical, and may there is the situation that output pressure does not meet required pressure limit, and then impact is for the accuracy of the control of relevant topworks.
In sum, the individual difference existed in prior art because of relay valve inner structure causes the problem that accurately cannot control relevant topworks.
Summary of the invention
The object of this invention is to provide a kind of pressure calibration method and device, cause the problem that accurately cannot control relevant topworks to solve the individual difference because of relay valve inner structure existed in prior art.
To achieve these goals, the invention provides following technical scheme:
A kind of pressure calibration method, comprising:
Step 1: the output pressure obtaining the current output of relay valve, as current output pressure;
Step 2: judge whether current output pressure meets pre-conditioned, if do not met, then obtains the calibration parameter corresponding with current output pressure, utilizes this calibration parameter to calibrate the input pressure producing current output pressure, obtains current input pressure;
Step 3: obtain the output pressure that current input pressure produces, as current output pressure, returns and performs step 2, until the current output pressure of described relay valve meet pre-conditioned till.
Preferably, after step 3, described method also comprises:
Determine that meeting described pre-conditioned current output pressure is goal pressure, and determine that the calibration parameter corresponding with described goal pressure is target alignment parameter;
Described target alignment parameter is stored to bottom document.
Preferably, described this calibration parameter that utilizes is calibrated the input pressure producing current output pressure, obtains current input pressure, comprising:
Using produce the input pressure of current output pressure and described calibration parameter and as current input pressure.
Preferably, judge whether current output pressure meets pre-conditioned, if do not met, then obtain the calibration parameter corresponding with current output pressure, comprising:
Obtain pre-conditioned, described pre-conditioned be preset pressure scope;
Judge whether current output pressure is within described preset pressure scope, if not, then obtain the calibration parameter corresponding with current output pressure.
A kind of pressure calibration device, comprising:
First acquisition module, for obtaining the output pressure of the current output of relay valve, as current output pressure;
Calibration module, pre-conditioned for judging whether current output pressure meets, if do not met, then obtain the calibration parameter corresponding with current output pressure, utilize this calibration parameter to calibrate the input pressure producing current output pressure, obtain current input pressure;
Second acquisition module, for obtaining the output pressure that current input pressure produces, as current output pressure, controlling described calibration module and carrying out work, until the current output pressure of described relay valve meet pre-conditioned till.
Preferably, described device also comprises memory module, described memory module is used for: determine that meeting described pre-conditioned current output pressure is goal pressure, and determine that the calibration parameter corresponding with described goal pressure is target alignment parameter, described target alignment parameter is stored to bottom document.
Preferably, described calibration module comprises alignment unit, and described alignment unit is used for: using produce the input pressure of current output pressure and described calibration parameter and as current input pressure.
Preferably, described calibration module comprises judging unit, and described judging unit is used for: obtain pre-conditioned, described pre-conditioned be preset pressure scope; Judge whether current output pressure is within described preset pressure scope, if not, then obtain the calibration parameter corresponding with current output pressure.
Preferably, described calibration module comprises man-machine interaction unit, and described man-machine interaction unit is used for: obtain the calibration parameter corresponding with current output pressure.
A kind of pressure calibration method provided by the invention, comprising: step 1: the output pressure obtaining the current output of relay valve, as current output pressure; Step 2: judge whether current output pressure meets pre-conditioned, if do not met, then obtains the calibration parameter corresponding with current output pressure, utilizes this calibration parameter to calibrate the input pressure producing current output pressure, obtains current input pressure; Step 3: obtain the output pressure that current input pressure produces, as current output pressure, returns and performs step 2, until the current output pressure of described relay valve meet pre-conditioned till.Compared with prior art, the application is in the mode of calibrating the input pressure producing current output pressure, realize the calibration to the output pressure of relay valve, pre-conditioned to make the output pressure of relay valve meet, and then utilization meets the accurate control of pre-conditioned output pressure realization for relevant topworks, makes the otherness of relay valve inner structure no longer impact the accuracy that it controls relevant topworks.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention 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 of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The process flow diagram of a kind of pressure calibration method that Fig. 1 provides for the embodiment of the present invention;
The structural representation of a kind of pressure calibration device that Fig. 2 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of pressure calibration method that the embodiment of the present invention provides, is characterized in that, comprising:
S11: the output pressure obtaining the current output of relay valve, as current output pressure.
S12: judge whether current output pressure meets pre-conditioned, if so, then performs step S13, if not, then performs step S14.
Wherein, pre-conditionedly can specifically to set according to actual needs.
S13: shut-down operation.
S14: obtain the calibration parameter corresponding with current output pressure, utilizes this calibration parameter to calibrate the input pressure producing current output pressure, obtains current input pressure.
S15: obtain the output pressure that current input pressure produces, as current output pressure, returns and performs step S12, until the current output pressure of relay valve meet pre-conditioned till.
Wherein, the output pressure of relay valve specifically can be used for the decompression amount size controlling train pipe.
Thus, the application is in the mode of calibrating the input pressure producing current output pressure, realize the calibration to the output pressure of relay valve, pre-conditioned to make the output pressure of relay valve meet, and then utilization meets the accurate control of pre-conditioned output pressure realization for relevant topworks, makes the otherness of relay valve inner structure no longer impact the accuracy that it controls relevant topworks.
In a kind of pressure calibration method that above-described embodiment provides, after the step s 15, can also comprise:
Determine that meeting pre-conditioned current output pressure is goal pressure, and determine that the calibration parameter corresponding with goal pressure is target alignment parameter;
Target alignment parameter is stored to bottom document.
Target alignment parameter is stored to bottom document, the correlation step that need not repeat above-mentioned pressure calibration method when using target alignment parameter can be needed in next time, but directly by bottom document, target alignment parameter is transferred, to utilize it to calibrate the input pressure of relay valve, and then realize the beneficial effect accurately controlling relevant topworks.
In a kind of pressure calibration method that above-described embodiment provides, utilize calibration parameter to calibrate the input pressure producing current output pressure, obtain current input pressure, can comprise:
Using produce the input pressure of current output pressure and calibration parameter and as current input pressure.
It should be noted that, calibration parameter is specifically as follows a numerical value, and it can be positive number can be also negative, and concrete value is different according to pre-conditioned setting.
Illustrate, pre-conditioned can be a desired value, then judge whether current output pressure meets pre-conditioned reality for judge whether current output pressure equals above-mentioned desired value, if, then shut-down operation, if not, then obtain the calibration parameter corresponding with current output pressure according to actual conditions, if current output pressure is greater than desired value, then that the two is poor as calibration parameter, and calibration parameter is negative, if current output pressure is less than desired value, then that the two is poor as calibration parameter, and calibration parameter is positive number.
Pre-conditioned can be preset pressure scope, then judge whether current output pressure meets pre-conditioned, if do not met, then obtain the calibration parameter corresponding with current output pressure, can comprise: obtain pre-conditioned, pre-conditioned is preset pressure scope; Judge whether current output pressure is within preset pressure scope, if not, then obtain the calibration parameter corresponding with current output pressure.In addition, the process obtaining calibration parameter can be similar to above-mentioned example, and difference is only, if current output pressure is greater than the maximal value of preset pressure scope, then the two is poor as calibration parameter, and calibration parameter is negative; If current output pressure is less than the minimum value of preset range, then the two is poor as calibration parameter, and calibration parameter is positive number.
It should be noted that, the sluggish scope of relay valve generally can be ± 10kPa.Illustrate, suppose that the output pressure needed is 500KPa, due to sluggishness, the scope of final output pressure can be 500 ± 10kPa.And pre-conditionedly can comprise sluggish scope.
Corresponding with a kind of pressure calibration method that above-described embodiment provides, the embodiment of the present invention also provides a kind of pressure calibration device, as shown in Figure 2, can comprise:
First acquisition module 21, for obtaining the output pressure of the current output of relay valve, as current output pressure;
Calibration module 22, pre-conditioned for judging whether current output pressure meets, if do not met, then obtain the calibration parameter corresponding with current output pressure, utilize this calibration parameter to calibrate the input pressure producing current output pressure, obtain current input pressure;
Second acquisition module 23, for obtaining the output pressure that current input pressure produces, as current output pressure, controlling calibration module 22 and carrying out work, until the current output pressure of relay valve meet pre-conditioned till.
Thus, the application is by above-mentioned pressure calibration device, in the mode of calibrating the input pressure producing current output pressure, realize the calibration to the output pressure of relay valve, pre-conditioned to make the output pressure of relay valve meet, and then utilization meets the accurate control of pre-conditioned output pressure realization for relevant topworks, makes the otherness of relay valve inner structure no longer impact the accuracy that it controls relevant topworks.
A kind of pressure calibration device that above-described embodiment provides, memory module can also be comprised, memory module is used for: determine that meeting pre-conditioned current output pressure is goal pressure, and determine that the calibration parameter corresponding with goal pressure is target alignment parameter, target alignment parameter is stored to bottom document.
Target alignment parameter is stored to bottom document, can when pressure calibration device re-powers directly by bottom document in target alignment parameter is transferred, to utilize it to calibrate the input pressure of relay valve, and then realize the beneficial effect accurately controlling relevant topworks.
In a kind of pressure calibration device that above-described embodiment provides, calibration module can comprise alignment unit, and alignment unit is used for: using produce the input pressure of current output pressure and calibration parameter and as current input pressure.
In addition, calibration module can also comprise judging unit, and judging unit is used for: obtain pre-conditioned, and pre-conditioned is preset pressure scope; Judge whether current output pressure is within preset pressure scope, if not, then obtain the calibration parameter corresponding with current output pressure.
It should be noted that, calibration module can also comprise man-machine interaction unit, and man-machine interaction unit is used for: obtain the calibration parameter corresponding with current output pressure.
Thus, user can directly utilize man-machine interaction unit to input calibration parameter, utilizes, improve Consumer's Experience, also make the acquisition for calibration parameter more accurate for pressure calibration device.
It should be noted that, man-machine interaction unit can also be used for preserving calibration parameter.
In addition, man-machine interaction unit can be touch display screen.Man-machine interaction unit can be provided with parametric calibration interface, this parametric calibration interface can be provided with increase progressively button, successively decrease button and preserve button.User arranges calibration value by the button that increases progressively on parametric calibration interface with the button that successively decreases, and also can directly manually input, and after arranging calibration parameter, by preserving button, calibration parameter is stored to bottom document at every turn.Arrange calibration parameter all to preserve by preserving button, and new calibration parameter can cover old calibration parameter, that is, only store up-to-date calibration parameter in bottom document at every turn.
In addition, after pressure calibration device gets calibration parameter, also can send feedback information to man-machine interaction unit, to inform that its calibration parameter receives.Thus, user knows the working condition of pressure calibration device in real time by feedback information.
To the above-mentioned explanation of the disclosed embodiments, those skilled in the art are realized or uses the present invention.To be apparent for a person skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a pressure calibration method, is characterized in that, comprising:
Step 1: the output pressure obtaining the current output of relay valve, as current output pressure;
Step 2: judge whether current output pressure meets pre-conditioned, if do not met, then obtains the calibration parameter corresponding with current output pressure, utilizes this calibration parameter to calibrate the input pressure producing current output pressure, obtains current input pressure;
Step 3: obtain the output pressure that current input pressure produces, as current output pressure, returns and performs step 2, until the current output pressure of described relay valve meet pre-conditioned till.
2. method according to claim 1, is characterized in that, after step 3, described method also comprises:
Determine that meeting described pre-conditioned current output pressure is goal pressure, and determine that the calibration parameter corresponding with described goal pressure is target alignment parameter;
Described target alignment parameter is stored to bottom document.
3. method according to claim 1, is characterized in that, described this calibration parameter that utilizes is calibrated the input pressure producing current output pressure, obtains current input pressure, comprising:
Using produce the input pressure of current output pressure and described calibration parameter and as current input pressure.
4. the method according to any one of claims 1 to 3, is characterized in that, judges whether current output pressure meets pre-conditioned, if do not met, then obtains the calibration parameter corresponding with current output pressure, comprising:
Obtain pre-conditioned, described pre-conditioned be preset pressure scope;
Judge whether current output pressure is within described preset pressure scope, if not, then obtain the calibration parameter corresponding with current output pressure.
5. a pressure calibration device, is characterized in that, comprising:
First acquisition module, for obtaining the output pressure of the current output of relay valve, as current output pressure;
Calibration module, pre-conditioned for judging whether current output pressure meets, if do not met, then obtain the calibration parameter corresponding with current output pressure, utilize this calibration parameter to calibrate the input pressure producing current output pressure, obtain current input pressure;
Second acquisition module, for obtaining the output pressure that current input pressure produces, as current output pressure, controlling described calibration module and carrying out work, until the current output pressure of described relay valve meet pre-conditioned till.
6. device according to claim 5, it is characterized in that, described device also comprises memory module, described memory module is used for: determine that meeting described pre-conditioned current output pressure is goal pressure, and determine that the calibration parameter corresponding with described goal pressure is target alignment parameter, described target alignment parameter is stored to bottom document.
7. device according to claim 5, is characterized in that, described calibration module comprises alignment unit, and described alignment unit is used for: using produce the input pressure of current output pressure and described calibration parameter and as current input pressure.
8. the device according to any one of claim 5 to 7, is characterized in that, described calibration module comprises judging unit, and described judging unit is used for: obtain pre-conditioned, described pre-conditioned be preset pressure scope; Judge whether current output pressure is within described preset pressure scope, if not, then obtain the calibration parameter corresponding with current output pressure.
9. device according to claim 5, is characterized in that, described calibration module comprises man-machine interaction unit, and described man-machine interaction unit is used for: obtain the calibration parameter corresponding with current output pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510569935.6A CN105115714A (en) | 2015-09-09 | 2015-09-09 | Pressure calibration method and apparatus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510569935.6A CN105115714A (en) | 2015-09-09 | 2015-09-09 | Pressure calibration method and apparatus |
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| CN105115714A true CN105115714A (en) | 2015-12-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20040206155A1 (en) * | 2003-04-16 | 2004-10-21 | Eaton Corporation | Method of calibrating a solenoid operated pressure control valve and method of controlling same |
| CN102155470A (en) * | 2011-05-27 | 2011-08-17 | 常德中联重科液压有限公司 | Automatic detection and debugging system and method of hydraulic valve |
| CN103994128A (en) * | 2014-04-29 | 2014-08-20 | 北京航天发射技术研究所 | On-line automatic pressure calibration system and method for hydraulic system |
| CN104225701A (en) * | 2014-09-26 | 2014-12-24 | 昆山韦睿医疗科技有限公司 | Valve state detection method and system and peritoneal dialysis equipment |
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2015
- 2015-09-09 CN CN201510569935.6A patent/CN105115714A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040206155A1 (en) * | 2003-04-16 | 2004-10-21 | Eaton Corporation | Method of calibrating a solenoid operated pressure control valve and method of controlling same |
| CN102155470A (en) * | 2011-05-27 | 2011-08-17 | 常德中联重科液压有限公司 | Automatic detection and debugging system and method of hydraulic valve |
| CN103994128A (en) * | 2014-04-29 | 2014-08-20 | 北京航天发射技术研究所 | On-line automatic pressure calibration system and method for hydraulic system |
| CN104225701A (en) * | 2014-09-26 | 2014-12-24 | 昆山韦睿医疗科技有限公司 | Valve state detection method and system and peritoneal dialysis equipment |
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Application publication date: 20151202 |