CN110456773A - A kind of setting method of load current fault threshold - Google Patents
A kind of setting method of load current fault threshold Download PDFInfo
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- CN110456773A CN110456773A CN201910749193.3A CN201910749193A CN110456773A CN 110456773 A CN110456773 A CN 110456773A CN 201910749193 A CN201910749193 A CN 201910749193A CN 110456773 A CN110456773 A CN 110456773A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/445—Program loading or initiating
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- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
A kind of setting method of load current fault threshold, the setting method of the fault threshold is the following steps are included: step 1: installation, BCM with setting is connected by CAN line with ValueCan, the USB line of ValueCan connects industrial personal computer, and the load signal output end of BCM is connected by rigid line with the corresponding fictitious load in load box；Step 2: brushing into calibration procedure；Step 3: rated power calibration, acquisition, storage；Step 4: brushing into application program；Step 5: calculating fault threshold after entrucking.The design not only allows BCM itself to detect the load current of its load, the case where effectively increasing the control precision of BCM, avoid fault misdescription, and counts parameter modification conveniently, is adapted to without issuing software again.
Description
Technical field
The present invention relates to a kind of setting methods of load current fault threshold, and it is particularly applicable to enter load by equipment brush
The specified programming step for training, simplifying BCM.
Background technique
Important function of BCM (vehicle body control unit) is to complete body electric system control and fault diagnosis, including vehicle
The real-time prison to the above electric appliance load may be implemented by BCM in interior lamp/outer lamp, rain shaving electrical machine, washing motor and solenoid valve etc.
Control, whether diagnostic load work normally, and when failure carries out protection to load and broadcasts dependent failure code to instrument.
BCM loads current operating current, that is, power by judgement when diagnosing load, mainly to complete.
Art methods are usually as one group of parameter premature cure by power under load rating power and malfunction in controller
In, as the threshold value of diagnositc decision, all controllers all can carry out diagnositc decision using same group of parameter.
Chinese patent notification number is CN106325265A, and the day for announcing is that the patent of invention on January 11st, 2017 discloses one
The fault diagnosis circuit and method of kind automobile body control module, circuit include and the concatenated sample resistance in relay contact end；
VBAT provides power supply by relay for load；At relay contact end and the midpoint of sample resistance connection operational amplifier electricity
Road；The output of operation amplifier circuit is connected with the port ADC of CPU, and the operating current for acquiring load carrys out decision circuitry
Open-circuit fault or overload fault；The output of operation amplifier circuit is connected with comparator circuit simultaneously；The output of comparator circuit
It is connected with the I/O port of CPU, the short trouble of decision circuitry is carried out for capturing rising edge interruption.Although the invention can be realized negative
The fault diagnosis of load, but its there are still following defects:
Since there is a certain error for electronic component and hardware circuit itself, the different identical function of BCM module drive
Rate load, feedback current passes through hardware Acquisition Circuit, then can obtain different sampled result after the conversion of the A/D module of MCU,
Here it is the individual differences of different controllers, this species diversity is under identical Diagnostic parameters, it is possible to can sentence to the result of diagnosis
Surely interference is brought, it is serious to may result in fault misdescription.On the other hand, when load characteristic changes, such as bearing power
It changes, needs to redefine Diagnostic parameters, issue software again and be adapted to.
Summary of the invention
The purpose of the present invention is overcoming the problems, such as that given threshold error existing in the prior art is larger, a kind of essence is provided
The setting method of the high load current fault threshold of exactness.
In order to achieve the above object, the technical solution of the invention is as follows:
A kind of setting method of load current fault threshold, the setting method of the fault threshold the following steps are included:
Step 1: installation, the BCM with setting is connected by CAN line with ValueCan, the USB line of ValueCan connects
Industrial personal computer is connect, and the load signal output end of BCM is connected by rigid line with the corresponding fictitious load in load box, at this time
The pre-installation of writing with a brush dipped in Chinese ink of BCM is completed；
Step 2: brushing into calibration procedure, industrial personal computer is brushed to BCM into power calibration procedure with ValueCan by CAN line；
Step 3: rated power calibration, acquisition, storage, industrial personal computer are sent to BCM by CAN line with ValueCan and are calibrated
Instruction, until the CAN bus signal acquisition process module of BCM receives calibration command, BCM receives BCM after calibration command
Load driving each channel of output module successively drives load box to export with nominal load, at this time the power collection module acquisition of BCM
The data memory module of electric current when nominal load works, BCM stores the rated current data for collecting each load to non-easy
In the fixing address of the property lost memory, until test and data storage are completed in all loads, then the CAN bus signal of BCM is adopted
Collection processing module sends calibration to industrial personal computer and completes to instruct and carry out in next step；
Step 4: brush into application program, industrial personal computer receive calibration complete after instruction with ValueCan by CAN line to
BCM is brushed into application program, and fault threshold computing module is contained in application program, is responsible for that fault threshold is calculated and monitored；
Step 5: BCM1 is in normal work, initialization is powered every time, and BCM reads each load from data memory module
Rated current, it is each negative that the fault threshold computing module of BCM according to the rated current of reading respectively loaded calculates fault mode
The threshold current of load is simultaneously stored into the fixing address of nonvolatile memory, and fault threshold setting at this time is completed.
It is identical that the rated power of equipment is corresponded on the rated power of fictitious load in the load box and vehicle.
BCM1 receives the load driving output module driving load box 4 of BCM1 after calibration command with volume in the third step
Fixed load output refers to that BCM1 drives each road loading interfaces to export in order, and every road output is kept for 3 seconds, reads after output is stablized
The corresponding feedback voltage level of fictitious load simultaneously calculates rated current, and the memorized in analogue is done to corresponding address space
For the basic parameter of fault diagnosis.
Compared with prior art, the invention has the benefit that
1, utilize calibration procedure and load box by BCM itself in a kind of setting method of load current fault threshold of the present invention
The load current for detecting its load was met further according to its detection and sets its corresponding fault threshold, avoided BCM controller because a
The case where detection error caused by body difference improves the control fault diagnosis precision of BCM, avoids fault misdescription.Therefore, originally
Design is effectively increased the control precision of BCM, is avoided fault misdescription using the load current for allowing BCM itself to detect its load
The case where.
2, in a kind of setting method of load current fault threshold of the present invention when the load characteristic of real vehicle changes, such as
When bearing power changes, it is only necessary to adjust the fault threshold of the i.e. renewable BCM of correspondence fictitious load parameter in load box, nothing
Diagnostic parameters need to be redefined again, issued software again and be adapted to, reduce software development, test, release cycle, save
Cost of labor.Therefore, the design parameter modification is convenient, is adapted to without issuing software again.
Detailed description of the invention
Fig. 1 is the scheme of installation in the first step of the present invention.
Fig. 2 is control flow chart of the second step of the present invention to the 4th step.
Fig. 3 is the control flow chart of the 5th step of the invention.
In figure: BCM1, industrial personal computer 2, ValueCan3, load box 4.
Specific embodiment
Below in conjunction with Detailed description of the invention and specific embodiment, the present invention is described in further detail.
Referring to Fig. 1 to Fig. 3, a kind of setting method of load current fault threshold, the setting method packet of the fault threshold
Include following steps:
Step 1: installation, the BCM1 with setting is connected by CAN line with ValueCan3, the USB line of ValueCan3
Industrial personal computer 2 is connected, and the load signal output end of BCM1 is connected by rigid line with the corresponding fictitious load in load box 4,
The pre-installation of writing with a brush dipped in Chinese ink of BCM1 is completed at this time；
Step 2: brushing into calibration procedure, industrial personal computer 2 is brushed to BCM1 into calibration of power journey with ValueCan3 by CAN line
Sequence；
Step 3: rated power calibration, acquisition, storage, industrial personal computer 2 sends school to BCM1 by CAN line with ValueCan3
Quasi instruction, until the CAN bus signal acquisition process module of BCM1 receives calibration command, after BCM1 receives calibration command
Load driving each channel of output module of BCM1 successively drives load box 4 to export with nominal load, at this time the power collecting of BCM1
Module acquires electric current when nominal load work, and the data memory module of BCM1 deposits the rated current data for collecting each load
Storage is into the fixing address of nonvolatile memory, and until test and data storage are completed in all loads, then the CAN of BCM1 is total
Line signal acquisition process module sends calibration to industrial personal computer 2 and completes to instruct and carry out in next step；
Step 4: brush into application program, industrial personal computer receive calibration complete after instruction with ValueCan3 by CAN line to
BCM1 is brushed into application program, and fault threshold computing module is contained in application program, is responsible for that fault threshold is calculated and monitored；
Step 5: BCM1 is in normal work, initialization is powered every time, and BCM1 reads each load from data memory module
Rated current, it is each negative that the fault threshold computing module of BCM1 according to the rated current of reading respectively loaded calculates fault mode
The threshold current of load is simultaneously stored into the fixing address of nonvolatile memory, and fault threshold setting at this time is completed.
It is identical that the rated power of equipment is corresponded on the rated power and vehicle of fictitious load in the load box 4.
BCM1 receives the load driving output module driving load box 4 of BCM1 after calibration command with volume in the third step
Fixed load output refers to that BCM1 drives each road loading interfaces to export in order, and every road output is kept for 3 seconds, reads after output is stablized
The corresponding feedback voltage level of fictitious load simultaneously calculates rated current, and the memorized in analogue is done to corresponding address space
For the basic parameter of fault diagnosis.
The principle of the present invention is described as follows:
BCM1: car body controller；ValueCan3:CAN turns USB interface.
Embodiment 1:
A kind of setting method of load current fault threshold, the setting method of the fault threshold the following steps are included:
Step 1: installation, the BCM1 with setting is connected by CAN line with ValueCan3, the USB line of ValueCan3
Industrial personal computer 2 is connected, and the load signal output end of BCM1 is connected by rigid line with the corresponding fictitious load in load box 4,
The pre-installation of writing with a brush dipped in Chinese ink of BCM1 is completed at this time；
Step 2: brushing into calibration procedure, industrial personal computer 2 is brushed to BCM1 into calibration of power journey with ValueCan3 by CAN line
Sequence；
Step 3: rated power calibration, acquisition, storage, industrial personal computer 2 sends school to BCM1 by CAN line with ValueCan3
Quasi instruction, until the CAN bus signal acquisition process module of BCM1 receives calibration command, after BCM1 receives calibration command
Load driving each channel of output module of BCM1 successively drives load box 4 to export with nominal load, at this time the power collecting of BCM1
Module acquires electric current when nominal load work, and the data memory module of BCM1 deposits the rated current data for collecting each load
Storage is into the fixing address of nonvolatile memory, and until test and data storage are completed in all loads, then the CAN of BCM1 is total
Line signal acquisition process module sends calibration to industrial personal computer 2 and completes to instruct and carry out in next step；
Step 4: brush into application program, industrial personal computer receive calibration complete after instruction with ValueCan3 by CAN line to
BCM1 is brushed into application program, and fault threshold computing module is contained in application program, is responsible for that fault threshold is calculated and monitored；
Step 5: BCM1 is in normal work, initialization is powered every time, and BCM1 reads each load from data memory module
Rated current, it is each negative that the fault threshold computing module of BCM1 according to the rated current of reading respectively loaded calculates fault mode
The threshold current of load is simultaneously stored into the fixing address of nonvolatile memory, and fault threshold setting at this time is completed.
Embodiment 2:
Embodiment 2 is substantially the same manner as Example 1, the difference is that:
It is identical that the rated power of equipment is corresponded on the rated power and vehicle of fictitious load in the load box 4；It is described
The load driving output module driving load box 4 that BCM1 receives BCM1 after calibration command in third step is exported with nominal load,
Refer to that BCM1 drives each road loading interfaces to export in order, every road output is kept for 3 seconds, and it is corresponding to read fictitious load after output is stablized
Feedback voltage level and calculate rated current, and by the memorized in analogue to corresponding address space, as fault diagnosis
Basic parameter.
Claims (3)
1. a kind of setting method of load current fault threshold, it is characterised in that:
The setting method of the fault threshold the following steps are included:
Step 1: installation, the BCM (1) with setting is connected by CAN line with ValueCan (3), the USB of ValueCan (3)
Line connects industrial personal computer (2), and the load signal output end of BCM (1) is passed through rigid line and the corresponding fictitious load in load box (4)
It is connected, the pre-installation of writing with a brush dipped in Chinese ink of BCM (1) is completed at this time；
Step 2: brushing into calibration procedure, industrial personal computer (2) is brushed to BCM (1) into calibration of power journey with ValueCan (3) by CAN line
Sequence；
Step 3: rated power calibration, acquisition, storage, industrial personal computer (2) is sent by CAN line to BCM (1) with ValueCan (3)
Calibration command, until the CAN bus signal acquisition process module of BCM (1) receives calibration command, BCM (1) receives calibration and refers to
Load driving each channel of output module of BCM (1) successively drives load box (4) to export with nominal load after order, at this time (1) BCM
Power collection module acquisition nominal load work when electric current, the data memory module of BCM (1) will collect the volume of each load
Constant current data are stored into the fixing address of nonvolatile memory, are completed test and data until all loads and are stored,
Then the CAN bus signal acquisition process module of BCM (1) sends calibration to industrial personal computer (2) and completes to instruct and carry out in next step；
Step 4: brushing into application program, industrial personal computer, which receives after instruction is completed in calibration, uses ValueCan (3) by CAN line to BCM
(1) it brushes into application program, fault threshold computing module is contained in application program, be responsible for that fault threshold is calculated and monitored；
Step 5: BCM (1) is in normal work, initialization is powered every time, and BCM (1) reads each load from data memory module
Rated current, it is each that the fault threshold computing module of BCM (1) according to the rated current of reading respectively loaded calculates fault mode
The threshold current of load is simultaneously stored into the fixing address of nonvolatile memory, and fault threshold setting at this time is completed.
2. a kind of setting method of load current fault threshold according to claim 1, it is characterised in that:
It is identical that the rated power of equipment is corresponded on the rated power and vehicle of fictitious load in the load box (4).
3. a kind of setting method of load current fault threshold according to claim 1 or 2, it is characterised in that:
In the third step BCM (1) receive load driving output module driving load box (4) of BCM (1) after calibration command with
Nominal load output refers to that BCM (1) drives each road loading interfaces to export in order, and every road output is kept for 3 seconds, after output is stablized
It reads the corresponding feedback voltage level of fictitious load and calculates rated current, and the memorized in analogue is empty to corresponding address
Between, as the basic parameter of fault diagnosis.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910749193.3A CN110456773B (en) | 2019-08-14 | 2019-08-14 | Method for setting fault threshold of load current |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910749193.3A CN110456773B (en) | 2019-08-14 | 2019-08-14 | Method for setting fault threshold of load current |
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| CN110456773B CN110456773B (en) | 2020-08-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110515643A (en) * | 2019-09-05 | 2019-11-29 | 南京协和电子科技有限公司 | A kind of host computer tool for writing with a brush dipped in Chinese ink BIN file |
| CN112989965A (en) * | 2021-02-25 | 2021-06-18 | 中国人民解放军海军航空大学 | SVD-LCD-BCM-based fault feature extraction method |
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| CN102474247A (en) * | 2009-08-10 | 2012-05-23 | 矢崎总业株式会社 | Load drive control device and load drive control method |
| CN103425124A (en) * | 2013-08-20 | 2013-12-04 | 重庆长安汽车股份有限公司 | Device and method for detecting connectivity of electric appliances of automobile on basis of current detection |
| CN107576903A (en) * | 2017-10-25 | 2018-01-12 | 浙江中控技术股份有限公司 | A kind of current signal output and diagnostic circuit, fault diagnosis method and system |
| CN108429442A (en) * | 2017-02-13 | 2018-08-21 | 三菱电机株式会社 | Load the IC apparatus of driving |
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2019
- 2019-08-14 CN CN201910749193.3A patent/CN110456773B/en active Active
Patent Citations (5)
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| CN201307061Y (en) * | 2008-11-21 | 2009-09-09 | 上海汇众汽车制造有限公司 | Diagnosis and processing device of load failure of automotive electric equipment based on CAN bus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110515643A (en) * | 2019-09-05 | 2019-11-29 | 南京协和电子科技有限公司 | A kind of host computer tool for writing with a brush dipped in Chinese ink BIN file |
| CN112989965A (en) * | 2021-02-25 | 2021-06-18 | 中国人民解放军海军航空大学 | SVD-LCD-BCM-based fault feature extraction method |
| CN112989965B (en) * | 2021-02-25 | 2023-01-31 | 中国人民解放军海军航空大学 | SVD-LCD-BCM-based fault feature extraction method |
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| CN110456773B (en) | 2020-08-04 |
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