CN102956399A - Method for eliminating adhesion of relay contact - Google Patents
Method for eliminating adhesion of relay contact Download PDFInfo
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- CN102956399A CN102956399A CN2011103251135A CN201110325113A CN102956399A CN 102956399 A CN102956399 A CN 102956399A CN 2011103251135 A CN2011103251135 A CN 2011103251135A CN 201110325113 A CN201110325113 A CN 201110325113A CN 102956399 A CN102956399 A CN 102956399A
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Abstract
The invention discloses a method for eliminating the adhesion of a relay contact. The method is characterized by sequentially comprising the following steps of: a release step, cutting the working current of a relay, and meeting the release requirement of the relay contact; a release delay step, waiting the relay contact to be transformed from a contact state to a separation state; an adhesion detection step, detecting whether the relay contact is cut as scheduled or not, if not, entering an absorption step; the absorption step, absorbing the relay contact again, and if so, entering a quitting step to close all steps; an absorption delay step, keeping the electrical conditions of all relays after the absorption step; and the release step again. According to the invention, the absorption step and the release step are executed for multiple times so that sufficient rocking times are generated on the relay contact, and thus the structure of the adhered contact is sufficiently destroyed; and the adhesion is eliminated by utilizing the poor fastness of the adhered relay contact on the basis of the original structure of the relay. The method disclosed by the invention has the advantages of simplicity, effectiveness and low cost without other peripherals.
Description
Technical field
The present invention relates to a kind of control method of relay, specifically the release method after the relay contact adhesion.
Background technology
Relay in use, continuous increase along with the break-make number of times, its contact can be because the effect of electric spark, become gradually no longer smooth and smooth, contact resistance increases, when the break-make number of times reaches certain value, local metal molten can be caused because of arcing in the contact, then be bonded together, when causing relay to discharge, the contact sticks together and can't separate, the power supply of electrical appliance that also just can't the block system relay back, then may cause dysfunction, in the occasion of many high pressure, large electric current even can cause danger.Therefore we find a kind of necessary demand, exactly the control method of relay are made removing function after suitably making it possess contact adhesion, the danger that brings to tackle this phenomenon.
Summary of the invention
For the necessary demand of above means of relay controlling, the present invention proposes a kind of release method of relay contact adhesion, and its technical scheme is as follows:
The release method of relay contact adhesion may further comprise the steps in turn:
(1) release steps comprises the block system relay operating current, satisfies the release conditions of relay contact;
(2) release delay step waits for that described relay contact transfers released state to from contact condition, more than the lasting Toff;
(3) adhesion detecting step comprises whether detect described relay contact disconnects as scheduled, and enters one of following two steps according to judged result:
A. if not, then enter the adhesive step, comprise the described relay contact of again adhesive; And
If B., then enter and withdraw from step, institute finishes in steps;
(4) adhesive time-delay step comprises and keeps the afterwards electric condition of all described relays of described steps A, more than the duration T on; Enter again above-mentioned steps (1);
Wherein, Toff is the opening time of described relay; Ton is the pickup time of described relay.
As the preferred person of technical solution of the present invention, can aspect following, improve:
In one preferred embodiment, described A step produces simultaneously one and is used for indicating in real time the first alarm of adhesion of described relay contact.
In one preferred embodiment, institute comprises second an alarm step before finishing in steps in the described B step, and this second alarm step is exported one second alarm according to existing adhesion history person.
In one preferred embodiment, also have one after described the second alarm step and shake counting step, this shakes counting step the described adhesion detecting step number of times of having carried out is added up, and with this statistical value and a threshold ratio; If described statistical value is not more than described threshold value and then carries out each step by original order; If described statistical value then enters one the 3rd alarm step greater than described threshold value, the 3rd alarm step comprises output one the 3rd alarm.
In one preferred embodiment, the described release delay step duration is Toff.
In one preferred embodiment, the described adhesive time-delay step duration is Ton.
The beneficial effect that the present invention brings is:
1. adhesive, release steps are carried out repeatedly, can produce enough " rocking " number of times to relay contact, thereby enough destroy the structure of adhesion contact.Utilized its looseness of relay contact of adhesion, carried out adhesion at relay architecture basics originally and remove.Method is succinctly effective, and does not need other peripheral hardware, and cost is low.
2. the adhesion recording step can judge that the adhesion of described relay contact is historical, and exports one second alarm according to existing adhesion history person, and the scheme that comprises this step can be used for further expanding more function.
3. shake counting step and can tackle the extreme case that to remove adhesion together with the 3rd alarm, and provide enough information to prepare against this extreme case of other routine processes.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing embodiment:
Fig. 1 is the embodiment of the invention one flow chart;
Fig. 2 is the embodiment of the invention two flow charts;
Fig. 3 is the embodiment of the invention three flow charts.
Embodiment
Embodiment one:
Such as Fig. 1, the embodiment of the invention one flow chart; After program begins, at first enter release steps 10.Operating current at these release steps 10 repeat circuit coils is cut off, and satisfies the release conditions of relay contact by its setup parameter; Next enter release delay step 20, this step is kept the electric condition of all described relays, waits for that relay contact transfers released state to from contact condition, namely keeps its coil working electric current to be cut off and not apply any operation bidirectional; This state continuance Toff time, Toff is the intrinsic parameter of relay opening time.In the reality, this step will continue Toff at least, for guaranteeing that relay contact has enough time and discharges fully; This example is just chosen Toff, is intended to guarantee full out finish in the reliable situation.
Enter adhesion detecting step 30 after the previous step, this step utilizes current detecting to judge that whether relay contact disconnects as scheduled, because corresponding load, the power supply of relay contact all remains on the road, has electric current certainly when the contact does not disconnect, so can obtain two kinds of judged results, disconnected or not disconnected.
If do not disconnect, then arbitration is for adhesion of contact, so enter adhesive step 40.This adhesive step 40 namely restarts relay coil, after it is carried out adhesive step 40, soon enter adhesive time-delay step 50, this adhesive time-delay step 50 namely is to keep the electric condition of the rear relay of adhesive step 40, duration is Ton, Ton is the pickup time of relay, and this adhesive time-delay step 50 is intended to guarantee full out finish in the situation that adhesive properly finishes.So action makes relay contact obtain once " pulling " on the basis of script adhesion, has also just destroyed the structure of adhesion place, impels the contact separately.
Carried out adhesive time-delay step 50, entered immediately release steps 10, also be, again release relay contact, so action is that relay contact forms one reciprocal " pulling " afterwards in upper one " pulling ", so, so far namely produce complete " a rocking " action.And then circulate by the series of steps after the above-mentioned release steps 10; Until judge in adhesion detecting step 30, relay contact disconnects, and institute just finishes in steps, and program withdraws from, and reaches original target.As seen from the figure, adhesive step 40, release steps 10 probably need to carry out repeatedly, in order to relay contact is produced enough " rocking " number of times, just enough destroy the structure of adhesion contact.Its looseness of relay contact that this has utilized adhesion just takes full advantage of relay structure originally and carries out the adhesion releasing.Method is succinctly effective, and does not need other peripheral hardware, and cost is low.
Embodiment two:
Such as Fig. 2, the embodiment of the invention two flow charts; This embodiment two is most of identical with embodiment one, difference is: at first, before adhesive step 40, owing to learnt adhesion of relay contact, so producing one, system is used for indicating in real time the first alarm 41 that described relay contact is in the adhesion state.This first alarm 41 can be used for real time monitoring whether adhesion has occured; and can be used as other programs of setting up of a signal enabling; such as extra load protection etc.; be easy to extended function; because the contact of adhesion is brought great danger possibly; so, indicating in real time this state and seem very necessary, this sign continues until judge that in adhesion detecting step 30 relay contact disconnects.
Secondly, after adhesion detecting step 30 judges that the contact has disconnected, namely remove the first alarm, judge whether once to exist the first alarm, namely carried out the first alarm step 41, if then enter one second alarm step 31 to export one second alarm, then straight line program withdraws from if not.This second alarm is used for further expanding more function, and such as can be with the second alarm as signal for the relay of existing adhesion history, the electric parameter when making adhesive is adjustment etc. suitably.Because the relay contact of adhesion had occured to be indicated this relay and has had physically damage, so, although removed adhesion, but compare the relay that adhesion did not occur, has different reliability, so this second alarm can help to judge that the health status of relay is so that decision-making.
Embodiment three:
This example and embodiment two differences are, comprise also that after the second alarm step 31 is shaken a counting step 70, and this shakes counting step 30 numbers of adhesion detecting step of having carried out are added up, and with this statistical value and a threshold ratio; If statistical value is not more than threshold value and then carries out each step by original order; If described statistical value then enters one the 3rd alarm step 80 greater than threshold value, the 3rd alarm step 80 output alarm damages certain degree in order to the bulletin relay contact.So; add and shake counting step 70 and the 3rd alarm step 80; can have better protection to relay and/or load; because adding contact adhesion can't remove; by setting the threshold value of an experience number of times; get final product this situation of automatic decision, provide enough information to prepare against other these extreme cases of program associated treatment.For ease of judging that when the 3rd alarm step 80 was carried out, the second alarm meeting was disengaged.
The above, only for preferred embodiment of the present invention, so can not limit according to this scope of the invention process, the equivalence of namely doing according to claim of the present invention and description changes and modifies, and all should still belong in the scope that the present invention contains.
Claims (6)
1. the release method of relay contact adhesion is characterized in that: may further comprise the steps in turn:
(1) release steps comprises the block system relay operating current, satisfies the release conditions of relay contact;
(2) release delay step waits for that described relay contact transfers released state to from contact condition, more than the lasting Toff;
(3) adhesion detecting step comprises whether detect described relay contact disconnects as scheduled, and enters one of following two steps according to judged result:
A. if not, then enter the adhesive step, comprise the described relay contact of again adhesive; And
If B., then enter and withdraw from step, institute finishes in steps;
(4) adhesive time-delay step comprises and keeps the afterwards electric condition of all described relays of described steps A, more than the duration T on; Enter again above-mentioned steps (1);
Wherein, Toff is the opening time of described relay; Ton is the pickup time of described relay.
2. described relay contact adhesion release method according to claim 1, it is characterized in that: described A step produces simultaneously one and is used for indicating in real time the first alarm of adhesion of described relay contact.
3. the release method of described relay contact adhesion according to claim 1, it is characterized in that: institute comprises second an alarm step before finishing in steps in the described B step, and this second alarm step is exported one second alarm according to existing adhesion history person.
4. the release method of described relay contact adhesion according to claim 1, it is characterized in that: also have one after described the second alarm step and shake counting step, this shakes counting step the described adhesion detecting step number of times of having carried out is added up, and with this statistical value and a threshold ratio; If described statistical value is not more than described threshold value and then carries out each step by original order; If described statistical value then enters one the 3rd alarm step greater than described threshold value, the 3rd alarm step comprises output one the 3rd alarm.
5. the release method of described relay contact adhesion according to claim 1, it is characterized in that: the described release delay step duration is Toff.
6. the release method of described relay contact adhesion according to claim 1, it is characterized in that: the described adhesive time-delay step duration is Ton.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103251135A CN102956399A (en) | 2011-10-21 | 2011-10-21 | Method for eliminating adhesion of relay contact |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103251135A CN102956399A (en) | 2011-10-21 | 2011-10-21 | Method for eliminating adhesion of relay contact |
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| CN102956399A true CN102956399A (en) | 2013-03-06 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569796A (en) * | 2013-10-17 | 2015-04-29 | 珠海格力电器股份有限公司 | Contact fault monitoring method and device |
| CN105609373A (en) * | 2015-12-18 | 2016-05-25 | 武汉钢铁(集团)公司 | Intermediate relay capable of automatically cutting off load during auxiliary point adhesion |
| CN110137032A (en) * | 2018-02-08 | 2019-08-16 | 发那科株式会社 | Load drive device and load driving method |
| CN112509864A (en) * | 2020-11-06 | 2021-03-16 | 联创汽车电子有限公司 | Relay control method and control structure thereof |
| CN112526329A (en) * | 2019-09-18 | 2021-03-19 | 上海度普新能源科技有限公司 | Relay adhesion diagnosis method and battery management system |
| CN113485303A (en) * | 2021-07-22 | 2021-10-08 | 东风汽车集团股份有限公司 | EPS controller power supply relay actuation optimization control method and system |
| CN114132177A (en) * | 2021-11-30 | 2022-03-04 | 重庆长安新能源汽车科技有限公司 | Relay high-voltage end adhesion treatment method |
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| CN201365121Y (en) * | 2009-02-24 | 2009-12-16 | 邓克飞 | Vacuum contactor adhesion controller |
| CN102087929A (en) * | 2009-08-19 | 2011-06-08 | 伊顿公司 | Controller and system including a controller for detecting a failure thereof |
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| US20060114635A1 (en) * | 2004-11-30 | 2006-06-01 | Robertshaw Controls Company | Method of detecting and correcting relay tack weld failures |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104569796A (en) * | 2013-10-17 | 2015-04-29 | 珠海格力电器股份有限公司 | Contact fault monitoring method and device |
| CN104569796B (en) * | 2013-10-17 | 2017-09-22 | 珠海格力电器股份有限公司 | A kind of contact fault monitoring method and device |
| CN105609373A (en) * | 2015-12-18 | 2016-05-25 | 武汉钢铁(集团)公司 | Intermediate relay capable of automatically cutting off load during auxiliary point adhesion |
| CN110137032A (en) * | 2018-02-08 | 2019-08-16 | 发那科株式会社 | Load drive device and load driving method |
| CN110137032B (en) * | 2018-02-08 | 2020-07-07 | 发那科株式会社 | Load driving device and load driving method |
| US11043345B2 (en) | 2018-02-08 | 2021-06-22 | Fanuc Corporation | Load driving device and load driving method |
| CN112526329A (en) * | 2019-09-18 | 2021-03-19 | 上海度普新能源科技有限公司 | Relay adhesion diagnosis method and battery management system |
| CN112509864A (en) * | 2020-11-06 | 2021-03-16 | 联创汽车电子有限公司 | Relay control method and control structure thereof |
| CN112509864B (en) * | 2020-11-06 | 2024-05-10 | 联创汽车电子有限公司 | Relay control method and control structure thereof |
| CN113485303A (en) * | 2021-07-22 | 2021-10-08 | 东风汽车集团股份有限公司 | EPS controller power supply relay actuation optimization control method and system |
| CN113485303B (en) * | 2021-07-22 | 2022-09-13 | 东风汽车集团股份有限公司 | EPS controller power supply relay actuation optimization control method and system |
| CN114132177A (en) * | 2021-11-30 | 2022-03-04 | 重庆长安新能源汽车科技有限公司 | Relay high-voltage end adhesion treatment method |
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Application publication date: 20130306 |