CN103364666B - The matching process of vehicle fuse - Google Patents
The matching process of vehicle fuse Download PDFInfo
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- CN103364666B CN103364666B CN201310311450.8A CN201310311450A CN103364666B CN 103364666 B CN103364666 B CN 103364666B CN 201310311450 A CN201310311450 A CN 201310311450A CN 103364666 B CN103364666 B CN 103364666B
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Abstract
The embodiment provides a kind of matching process of vehicle fuse, this matching process comprises: the current curve obtaining the electrical part of vehicle; Mathematical modeling recurrence is carried out to current curve, generates corresponding regression equation; Utilize regression equation to generate current versus time curve, and the current curve of current versus time curve and acquisition is carried out comparing; If comparison result is not within predetermined deviation range, re-starts mathematical modeling and return calculating; If within predetermined deviation range, then integral operation is carried out to regression equation, obtain the melting heat energy value of dash current; Utilize melting heat energy value and the current curve of dash current, calculate the current rating choosing fuse; And according to the current rating choosing fuse calculated, coupling obtains corresponding fuse.Carry out the melting heat energy value calculation of dash current by mode more accurately and fast, effectively improve the accuracy of fuse coupling.
Description
Technical field
The present invention relates to technical field of vehicle, particularly relate to a kind of matching process of vehicle fuse.
Background technology
Fuse (fuse) is also referred to as current insurance silk, and IEC127 standard is defined as " fuse-link (fuse-link) ".When circuit malfunctions or abnormal time, constantly raise along with electric current, and the electric current raised likely damages some important devices in circuit or valuable device, also likely burns circuit and even causes fire.If correctly settled fuse in circuit, so, fuse will when current anomaly be elevated to certain height and temperature, and electric current is cut off in self fusing, thus plays the effect of protection circuit safe operation.
There is dash current when starting in vehicle electrical device, the size of dash current and duration are the key factors affecting fuse life and reliability.Pass through to adopt the melting heat energy value (I calculating dash current when generally choosing fuse
2t, wherein I represents fusing current, and t represents fusing time) with the melting heat energy value (I of fuse
2t) relative value carries out choose reasonable.Because the electric current measuring gained is current curve, needs to process these data, and then manually calculate the melting heat energy value (I of dash current
2t), and this mode needs manually to get acquired current curve a little then to carry out subsection curve drafting recurrence, and error is comparatively large, and existence is easily made mistakes, gained melting heat energy value (I
2t) inaccurate.
Current calculating melting heat energy value (I
2t) generally all in the following way:
1. current curve is got a little;
2. artificial fitting's current curve calculate regression equation;
3. pair current curve regression equation to carry out square after integral and calculating;
But the shortcoming of existing method is: (1). artificial fitting's current curve regression equation workload is huge; (2). artificial regression equation error is large; (3). artificial calculated product divides workload large, and easily makes mistakes; (4). large to the result verification of correctness workload calculated.
Summary of the invention
In order to solve the problems of the technologies described above, embodiments of the invention propose a kind of matching process of vehicle fuse, effectively improve the accuracy of coupling.
An aspect according to an embodiment of the invention, provide a kind of matching process of vehicle fuse, matching process comprises: the current curve obtaining the electrical part of vehicle; Mathematical modeling recurrence is carried out to current curve, generates corresponding regression equation; Utilize regression equation to generate current versus time curve, and the current curve of current versus time curve and acquisition is carried out comparing; If comparison result is not within predetermined deviation range, re-starts mathematical modeling and return calculating; If within predetermined deviation range, then integral operation is carried out to regression equation, obtain the melting heat energy value of dash current; Utilize melting heat energy value and the current curve of dash current, calculate the current rating choosing fuse; And according to the current rating choosing fuse calculated, coupling obtains corresponding fuse.
Alternatively, the step of current curve obtaining the electrical part of vehicle is: by the current data of the electrical part of data collecting instrument collection vehicle, generate current curve by current data, or the current curve of electrical part by oscillograph collection vehicle.
Alternatively, carrying out mathematical modeling recurrence to current curve, before generating the step of corresponding regression equation, method also comprises: analyze and calculation system the described current curve obtained.
Another aspect according to an embodiment of the invention, provide a kind of matching unit of vehicle fuse, matching unit comprises: acquisition device, for obtaining the current curve of the electrical part of vehicle; Model building device, for carrying out mathematical modeling recurrence to described current curve, generates corresponding regression equation; Comparison device, for utilizing regression equation to generate current versus time curve, and carries out comparing by the current curve of current versus time curve and acquisition; If comparison result is not within predetermined deviation range, re-starts mathematical modeling and return calculating; If within predetermined deviation range, then integral operation is carried out to regression equation, obtain the melting heat energy value of dash current; Calculation element, for utilizing melting heat energy value and the current curve of dash current, calculates the current rating choosing fuse; And coalignment, for according to the current rating choosing fuse calculated, mate and obtain corresponding fuse.
Alternatively, acquisition device is the current data of data collecting instrument, the electrical part of this data collecting instrument collection vehicle, generates current curve by current data.
Alternatively, acquisition device is oscillograph.
As shown from the above technical solution, embodiments of the invention have following beneficial effect: carry out the melting heat energy value (I of dash current by adopting mode more accurately and fast
2t) calculate, contrast can be carried out to the equation returned and correct, effectively improve the accuracy of fuse coupling.
Accompanying drawing explanation
Fig. 1 represents the process flow diagram of the matching process 100 of the vehicle fuse of embodiments of the invention;
Fig. 2 represents the structural drawing of the matching unit 200 of the vehicle fuse of embodiments of the invention.
Embodiment
Below with reference to accompanying drawings exemplary embodiment of the present disclosure is described in more detail.Although show exemplary embodiment of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment set forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
In the matching process of the vehicle fuse of embodiments of the invention, first obtain the current curve of the electrical part of vehicle; Then mathematical modeling recurrence is carried out to current curve, generate corresponding regression equation; Utilize regression equation to generate current versus time curve, carry out comparing with the current curve obtained, if comparison result is not within predetermined deviation range, re-starts data regression and calculate; If within predetermined deviation range, then integral operation is carried out to regression equation, obtain the melting heat energy value of dash current; Then utilize melting heat energy value and the current curve of dash current, calculate the current rating choosing fuse; The current rating of the fuse that last basis calculates, coupling obtains corresponding fuse.
As shown in Figure 1, be the process flow diagram of the matching process 100 of the vehicle fuse of embodiments of the invention, the method 100 comprises:
The current curve of the electrical part of step S101, acquisition vehicle;
Such as: by the current data of the electrical part of data collecting instrument collection vehicle, generate current curve by current data, the current curve of the electrical part or by oscillograph collection vehicle;
In an embodiment of the present invention, the electrical part of this vehicle comprises: the electrical parts such as accumulator, magnetic switch, starting relay, ignition switch, warm braw motor.
Alternatively, after step slol, can step S103 be introduced into, or also directly can enter step S105.
Step S103, to obtain current curve analyze and calculation system, subsequently, enter step S105.
Step S105, mathematical modeling recurrence is carried out to current curve, generate corresponding regression equation, subsequently, enter step S107.
Such as, polynomial of one indeterminate in Matlab software is adopted to return order: polytool (x, y, m) ([p, S]=polyfit (x, y, m), wherein, p is the rreturn value of polyfit function; S is a matrix, is used for estimating predicated error; X, y are data point, and m is polynomial expression exponent number) mathematical modeling recurrence is carried out to the data of current curve, draw recurrence multinomial coefficient: p=(a
1a
2a
m+1), a represents regression coefficient, can generate corresponding regression equation: I=a
1t
m+ a
2t
m-1+ ... + a
mt+a
m+1, wherein t represents time series.It is appreciated of course that, do not limit the software for calculation that calculating adopts in an embodiment of the present invention.
Step S107, utilize regression equation generate current versus time curve, with obtain current curve carry out comparing; If comparison result is not at predetermined deviation range ± 5%, re-starts data regression and calculate, then enter step S105; If within predetermined deviation range, regression equation can be used, and enters step S109.
Step S109, integral operation is carried out to regression equation, obtain the melting heat energy value (I of dash current
2t); Subsequently, step S111 is entered.
Alternatively, pass through
Carry out integral operation to regression equation, wherein t1 is that time point, t2 electric current arrive time of stable state to dash current in fact
Step S111, utilize the melting heat energy value (I of dash current
2t) and current curve, according to current curve get stable after working current I
s, draw fuse rated current I
f.
Such as
upwards rounding draws fuse rated current, calculates and guarantees relatively
Such as, the melting heat energy value (I of dash current is utilized by Matlab software
2t) and current curve, the current rating choosing fuse is calculated.
The current rating of the fuse that step S113, basis calculate, coupling obtains corresponding fuse.
The major parameter that fuse is selected comprises: voltage rating, current rating, breaking capacity, fusing ability, environment temperature etc., therefore, can according to the current rating of the fuse calculated, coupling obtains the fuse corresponding with this current rating.
As shown in Figure 2, be the structural drawing of the matching unit 200 of vehicle fuse, this equipment comprises:
Acquisition device 201, for obtaining the current curve of the electrical part of vehicle;
Model building device 203, for carrying out mathematical modeling recurrence to current curve, generates corresponding regression equation;
Comparison device 205, for utilizing described regression equation to generate current versus time curve, carries out comparing with the current curve of described acquisition; If comparison result is not within predetermined deviation range, re-starts data regression and calculate; If within predetermined deviation range, then integral operation is carried out to regression equation, obtain the melting heat energy value of dash current;
Calculation element 207, for utilizing melting heat energy value and the current curve of dash current, calculates the current rating choosing fuse; And
Coalignment 209, for the current rating according to the fuse calculated, coupling obtains corresponding fuse.
Alternatively, acquisition device 201 is the current data of data collecting instrument, the electrical part of this data collecting instrument collection vehicle, generates current curve by current data.
Alternatively, acquisition device 201 is oscillograph.
As shown from the above technical solution, embodiments of the invention have following beneficial effect: adopt mode more accurately and fast to carry out the melting heat energy value (I of dash current
2t) calculate, contrast can be carried out to the equation returned and correct, effectively improve the accuracy of fuse coupling.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. a matching process for vehicle fuse, is characterized in that, described method comprises:
Obtain the current curve of the electrical part of vehicle;
Mathematical modeling recurrence is carried out to described current curve, generates corresponding regression equation;
Utilize described regression equation to generate current versus time curve, and the current curve of described current versus time curve and described acquisition is carried out comparing; If comparison result is not within predetermined deviation range, re-starts mathematical modeling and return calculating; If within predetermined deviation range, then integral operation is carried out to described regression equation, obtain the melting heat energy value of dash current;
Utilize the melting heat energy value of described dash current and described current curve, calculate the current rating choosing fuse; And
According to the current rating choosing fuse described in calculating, coupling obtains corresponding fuse.
2. matching process according to claim 1, is characterized in that, the step of the current curve of the electrical part of described acquisition vehicle is:
By the current data of the electrical part of data collecting instrument collection vehicle, generate current curve by current data, or by the current curve of the electrical part of oscillograph collection vehicle.
3. matching process according to claim 1 and 2, is characterized in that, is carrying out mathematical modeling recurrence to current curve, and before generating the step of corresponding regression equation, described method also comprises:
The described current curve obtained is analyzed and calculation system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310311450.8A CN103364666B (en) | 2013-07-23 | 2013-07-23 | The matching process of vehicle fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310311450.8A CN103364666B (en) | 2013-07-23 | 2013-07-23 | The matching process of vehicle fuse |
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| Publication Number | Publication Date |
|---|---|
| CN103364666A CN103364666A (en) | 2013-10-23 |
| CN103364666B true CN103364666B (en) | 2016-01-20 |
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| CN201310311450.8A Active CN103364666B (en) | 2013-07-23 | 2013-07-23 | The matching process of vehicle fuse |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111383869B (en) * | 2018-12-29 | 2021-11-30 | 安波福电子(苏州)有限公司 | Novel fuse box with large current and fuse fusing early warning function |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201332263Y (en) * | 2008-11-07 | 2009-10-21 | 康佳集团股份有限公司 | Device for obtaining melting heat energy of fuse |
| EP2111681A1 (en) * | 2007-02-05 | 2009-10-28 | S & C Electric Company | Fuse saving power distribution system fault protection |
| CN103163421A (en) * | 2013-03-01 | 2013-06-19 | 中国空间技术研究院 | Method and device of testing surge current impact resistant property of fuse |
-
2013
- 2013-07-23 CN CN201310311450.8A patent/CN103364666B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2111681A1 (en) * | 2007-02-05 | 2009-10-28 | S & C Electric Company | Fuse saving power distribution system fault protection |
| CN201332263Y (en) * | 2008-11-07 | 2009-10-21 | 康佳集团股份有限公司 | Device for obtaining melting heat energy of fuse |
| CN103163421A (en) * | 2013-03-01 | 2013-06-19 | 中国空间技术研究院 | Method and device of testing surge current impact resistant property of fuse |
Non-Patent Citations (3)
| Title |
|---|
| 汽车用熔断器选用方法;张明森;《汽车电器》;20100131(第1期);11-13 * |
| 浅谈汽车用线路保险丝;李晓莲 等;《中国重要会议论文全文数据库》;20101231;264-272 * |
| 熔断器特性及正确选用方法;叶怀民;《船电技术》;20000531(第5期);32-37 * |
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|---|---|
| CN103364666A (en) | 2013-10-23 |
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Owner name: BEIJING AUTOMOBILE RESEARCH GENERAL INSTITUTE CO., Free format text: FORMER OWNER: BAIC MOTOR CO., LTD. Effective date: 20131212 |
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Effective date of registration: 20131212 Address after: 101300 Beijing, Shunyi District Shun Road, No. 25, room 5, 106 Applicant after: Beijing Automobile Research General Institute Co., Ltd. Address before: 101300 Beijing City Renhe Town Shunyi District Shuanghe Street No. 99 Applicant before: Beijing Automibile Co.,Ltd. |
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Effective date of registration: 20190412 Address after: No.1 Tongxin Road, Zhaoquanying Town Zhaofeng Industrial Base, Shunyi District, Beijing 100130 Patentee after: Beijing automobile group cross-country car Co., Ltd. Address before: Room 106, Building 5, Shunyi 25, Shunyi District, Beijing 101300 Patentee before: Beijing Automobile Research General Institute Co., Ltd. |
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