CN116430824A - Electrostatic current testing system and method for vehicle controller - Google Patents
Electrostatic current testing system and method for vehicle controller Download PDFInfo
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- G—PHYSICS
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- 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
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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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
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Abstract
The invention discloses an electrostatic current testing system and method of a vehicle controller, which belong to the field of automobile electrical testing and comprise a multifunctional adjustable stabilized voltage supply, an automobile CAN box tool, an upper computer, a wire harness, a to-be-tested controller, an overcurrent protection device and an electrostatic current detection device, wherein the multifunctional adjustable power supply is used for supplying power to the whole system and mainly supplies power to the to-be-tested controller. The upper computer controls dormancy awakening and duration of the controller in the static current testing process through the Vector software and the written CAPL script and the automobile CAN box tool. The static current detection device is used for detecting the static current of the controller to be detected during the dormancy period. The overcurrent protection device is an overcurrent protection box with a control switch, and the control switch plays a role of shielding or connecting the static current detection device in the whole test system.
Description
Technical Field
The invention belongs to the technical field of automobile electrical testing, and particularly relates to an electrostatic flow testing system and method of a vehicle controller.
Background
In order to meet the requirements of entertainment comfort and diversification and individuation of consumers and upgrade and update of vehicle product configuration, controllers mounted on vehicles are more and more recently, and static current after the vehicles sleep is easy to be overlarge and possibly exceeds a static current engineering design target, so that the vehicles bring excessive load to storage batteries during sleep, the power shortage of the storage batteries of the vehicles is easy to be caused, the cycle life of the storage batteries is influenced, the vehicles cannot be started after the vehicles are parked for a period of time by users, and the use experience of the users is influenced.
The above problems can be solved by using a vehicle to adopt a higher standard storage battery model, but the method brings a certain pressure to the cost control of a main machine factory and is not beneficial to the after-sale unified maintenance. Meanwhile, the increase of the controllers also brings certain challenges to the development and design stage of the static current of the whole vehicle and the after-sales problem investigation.
After the known vehicle is dormant, the static current of the whole vehicle is obtained by adding the static current of all the controllers of the whole vehicle. Therefore, in the development stage of the vehicle, the static current of a single controller is subjected to touch test, so that the static current problem can be found in advance and fed back to a supplier of the controller to improve, and the control of the static current of the whole vehicle after the vehicle is assembled and taken off line is fully necessary. The design of the static electricity flow test system and the static electricity flow test method of the vehicle controller is of great significance to testers.
Disclosure of Invention
In view of the above problems, the present invention provides an electrostatic flow test system of a vehicle controller, including:
multifunctional adjustable stabilized voltage power supply: the power supply is supplied to the whole set of system, and mainly supplies power to the controller to be tested;
automobile CAN box tool: controlling dormancy wakeup and duration of a controller to be tested in the static current test process according to software and scripts in the upper computer;
the upper computer: carrying Vector software and written CAPL script;
overcurrent protection device: the overcurrent protection box with the control switch shields or connects the static current detection device and has four connecting terminals;
static current detection device: detecting static current of the controller to be tested in a dormant period;
and a controller to be tested.
Wherein: the automobile CAN box tool is connected with an upper computer through a USB wire, the upper computer is connected with a controller to be tested through CAN_H and CAN_L, the controller to be tested is electrically connected with a multifunctional adjustable stabilized voltage supply and a pole through a pole, the controller to be tested is electrically connected with a second terminal of an overcurrent protection device through a pole, the overcurrent protection device is electrically connected with the multifunctional adjustable stabilized voltage supply and the pole through a first terminal, and two ends of an electrostatic current detection device are respectively electrically connected with a third terminal and a fourth terminal of the overcurrent protection device.
Further, a control switch is arranged between the first terminal and the third terminal connecting wiring harness and between the second terminal and the fourth terminal connecting wiring harness in the overcurrent protection device, and a safety device is arranged between the second terminal and the fourth terminal connecting wiring harness, wherein the fuse fusing current in the safety device is larger than the maximum electrostatic current peak value of the to-be-detected controller and smaller than the 'mA' gear safety current value of the electrostatic current detection device.
Further, the automotive CAN box tool includes more than one high speed CAN channels, more than one LIN channels and more than one K-Line channels.
Further, the upper computer is a desktop computer or a notebook computer.
Furthermore, the static current detection device is a high-precision multimeter with a test meter pen.
Further, one end of the test meter pen is a banana head, and the other end of the test meter pen is an crocodile clip.
A method for testing electrostatic flow of a vehicle controller, comprising the steps of:
s1, building a CAN engineering editing configuration file: controlling the controller to be tested to sleep or wake up and save data in the test process; the test script is compiled, and the content of the configuration file can be automatically read and operated
S2, closing a control switch, opening a multifunctional adjustable stabilized voltage supply, opening the control switch,
s3, powering up the controller to be tested for 30-180 seconds, powering down the controller to be tested, controlling the controller to be tested to sleep by using the test script configuration file in the step S1, and recording the static current value;
s4, comparing the static current value in the S3 with a standard value, and ending the test if the static current value is smaller than the standard value; if the value is larger than the standard value, recording, storing and feeding back.
Further, in step S2, the multifunctional adjustable regulated power supply is set to 14V.
Further, in step S3, the value of the static current is an average value of 3 minutes or more.
Further, in step S4, the power-on time of the controller to be tested is 30 seconds.
The beneficial effects of the invention are as follows:
the tester can perform an electrostatic flow test on the controller according to the system of the present invention. The system and the method do not need to purchase extra expensive equipment, are beneficial to reducing the cost investment of hardware facilities, can be built by only using a common testing tool beside a tester, are simple and easy to copy, and can be used for quickly building a set of equipment and performing a test by using the equipment after simple training even for a test person with unskilled experience. The system and the method improve the equipment utilization rate for testers and enterprises, enable the testers to quickly build a plurality of sets of systems to test when facing static current testing tasks of a plurality of controllers of a plurality of vehicle types, reduce the test period, and simultaneously reduce the possibility of equipment loss due to the mounted overcurrent protection device.
Drawings
FIG. 1 is a schematic diagram of a test system according to the present invention.
Figure 2 is a schematic diagram of the test environment set up of the present invention.
FIG. 3 is a flow chart of the testing method of the present invention.
In the figure
a-a first terminal; b-a second terminal; c-a third terminal; d-fourth terminal.
Detailed Description
It should be noted that, in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operate in a specific orientation.
In the present invention, unless specifically stated and limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly, and for example, "fixed" may be a fixed connection, a removable connection, or an integral body; the connection may be mechanical connection or electrical connection; the connection may be direct connection or indirect connection via an intermediate medium, and may be internal connection of two elements or interaction relationship of two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The system of the invention comprises: the multifunctional adjustable stabilized voltage supply, an automobile CAN box tool, an upper computer, a wire harness, a controller to be tested, an overcurrent protection device and an electrostatic current detection device. The multifunctional adjustable power supply is used for supplying power to the whole system and mainly supplies power to the controller to be tested; the upper computer controls dormancy awakening and duration of the controller in the static current testing process through Vector software and a written CAPL script and an automobile CAN box tool which are carried on the upper computer; the static current detection device is used for detecting the static current of the controller to be detected in the dormant period; the overcurrent protection device is an overcurrent protection box with a control switch, and the control switch plays a role of shielding or switching on the static current detection device in the whole test system.
And (5) building CAN engineering. Newly creating a CAN engineering configuration file of a 1 channel, and under an Analysis tab, selecting a storage position of the Log file and setting a naming mode by the Logging module; selecting a Simulink Setup module under a station tab, and adding a dbc file of the CAN to which the controller belongs; returning to the Graphics module under the Analysis tab again, and adding the signal to be observed; and (3) confirming the software and Hardware Channel adaptation of the CANoe again by using Channel Usage, channel Mapping and Network Hardware under the Hardware tab, and storing the CAN configuration file to the desktop.
And compiling a dormancy wakeup test script. Opening Vector CANoe software at the upper computer, creating a Insert Network Node node module by a right key under a formulation tab, opening the node module, and storing the node module named as 'cessi'; after Vector CAPL Browser is opened, a script is written, an environment variable is initialized to set a timer t0, and the timer is mainly used for defining the controller to send an application message when the system is built and software is operated; setting a message format, wherein the current test does not involve carrying out actual function test on the controller, and only needs to satisfy that the controller wakes up for a period of time and sleeps, so that a message in which a power supply mode signal is positioned is selected, and the ID, the name and the data length of the message are defined; calling on start proceduce, setting the initial value of a timer t0 to be 0, and setting the message data to be 0x00; if no message verification is required, the message verification is not required to be defined in the script; if the message has a message verification requirement, a compiled verification algorithm module is added into the script, so that the message in the script can be normally transmitted and received; calling an On key module, optionally selecting a keyboard key, such as 'A', and setting the byte data of a power supply mode signal in the message as 'IGON' according to the DBC definition of the controller; calling the On key module again, optionally selecting a different keyboard key, such as 'B', and setting the data of the bytes where the power supply mode signal is positioned in the message as 'Off' according to the DBC definition of the controller; and calling the On key module again, optionally selecting a different keyboard key, such as 'C', and setting a cancelTimer function cancellation timer t0 so as to achieve the purpose of message stopping. After compiling the script without grammar error, save the script, exit Vector CAPL Browser.
The test system sets a timer t0 in the script to simulate the real performance of the controller after the real vehicle is powered on and off and is locked and dormant, and the test system can generate current in the circuit. After the message is sent, the operation interval duration between the key A and the key B can be set according to the type of the controller, and can be selected to be 30-180 s.
The test system sets a cancelTimer function cancel timer t0 in the script to ensure that only the to-be-tested controller exists in the test system, and no other controllers exist, so that the whole vehicle network management message is not limited, but the controller is dormant, so that after a key "C" is pressed, the controller is dormant by stopping sending the message by using the cancelTimer function.
And constructing a desktop test bench. An appropriate site is selected as the test environment, such as a quiet, clean, 24h powered-down office table top is selected as the test environment. According to the second drawing, each device is placed in the illustrated position or the size of the desktop environment is considered to be convenient for a tester to observe and place.
The upper computer is connected with the CANoe in a USB line mode; finding out a CAN_ H, CAN _L pin of a controller connector according to an ICD pin definition file of the controller, and connecting a wire harness led by the CAN_ H, CAN _L pin with an automobile CAN box tool by using a wire harness; finding a power supply plus electrode pin and a minus electrode pin in a connector of the controller according to an ICD pin definition file of the controller, and connecting the power supply plus electrode pin of the controller with a positive electrode of a multifunctional adjustable stabilized voltage power supply by using a wire harness; the negative electrode is connected with a second terminal b of the overcurrent protection device, and a first terminal a of the overcurrent protection device is connected with the negative electrode of the multifunctional adjustable stabilized voltage supply through a wire harness; since the connection wire of the current detection device does not need to distinguish between the positive and negative directions, one end of the connection wire is optionally connected with the third terminal c of the overcurrent protection device, and the other end of the connection wire is connected with the fourth terminal d of the overcurrent protection device.
The upper computer can be a mobile portable notebook.
The current detection device selected by the test system is a high-precision universal meter and a test meter pen, and for convenience in test, the test meter pen can be replaced by a special wire harness with one end being a banana head and the other end being an crocodile clip.
The automobile CAN box tool selected by the test system is CANoe hardware, the device is provided with one or more high-speed CAN channels, and other channels CAN be LIN channels and K-Line channels, but at least comprise one high-speed CAN channel and one LIN channel so as to meet the test requirements of controllers in different communication modes.
The over-current protection device may be a special case. Wherein the first terminal a and the third terminal c of the overcurrent protection device are electrically connected internally, and the second terminal b and the fourth terminal d are electrically connected internally. And a control switch is arranged between the wire harness connected with the first terminal a and the third terminal c, and the wire harness connected with the second terminal b and the fourth terminal d. A fuse is provided between the harness to which the second terminal b and the fourth terminal d are connected. For this reason, the device needs to be easily disassembled to replace the fuse or to replace the wire harness when the wire harness is broken.
The fusing current range of the fuse needs to be larger than the maximum electrostatic current peak value of the controller to be tested, but smaller than the 'mA' gear safety of the selected current detection device, so that the electrostatic current of the controller can be normally tested, and the risk that the safety of the selected current detection device in the circuit is burnt can be protected.
The control switch has two functions, namely, the switch is closed before the current detection device is connected into the circuit again, so that the current detection device is short-circuited, and the instant protection device is not damaged by instant large current; secondly, after the protection device is burnt in other unexpected conditions such as abnormal awakening after the controller is dormant, the control switch can be closed to enable the current detection device to be short-circuited, the mA gear protection of the current detection device can be replaced at the moment, the observation is continued until the message in the upper computer is stopped, namely, after the controller is dormant, the switch is opened, and the dormant static current of the controller to be detected can be continuously observed. If the number of the controllers to be tested is plural, the controllers to be tested in the system can be replaced, and the steps are repeated to continuously observe the magnitude of the static current. And simultaneously retesting the magnitude of the electrostatic current of the controller to be tested, which is subjected to abnormal awakening. If the detection result of the replaced current value is not qualified, the controller to be detected with abnormal wake-up working condition is sent to a developer to find the reason of abnormal static current; if the retest result of the to-be-tested controller with abnormal wake-up is qualified, continuing the next step.
Checking whether the test environment is quiet, neat and uninterrupted for 24 hours; and checking whether the connecting wire harness between the hardware of the test system is damaged or broken, and if so, immediately replacing the intact wire harness.
The control switch in the overcurrent protection device is closed. And (3) switching ON the power supply to set 14V, opening and running the CAN engineering configuration in the step one, pressing an upper computer 'A' key, observing a Trace interface message in the CAN engineering configuration, and displaying that the power supply mode signal is IGON. After 30s, the key B is pressed, and the message displays the power supply mode as Off, so that the controller to be tested is powered down. The control switch in the overcurrent protection device is turned on. The controller waits for the current level at this time, which is displayed by the current detection device. At this time, the key "C" is pressed, and at this time, the message is stopped, and the controller is waited for dormancy. After dormancy, the electrostatic current of the to-be-detected controller displayed by the current detection device is observed. Because the static current value is not the only constant and floats up and down at a certain value, the reading is observed for 3min, the average value is compared with the designed static current target value, and if the average value is smaller than the target value, the test is qualified; if the measured value is larger than the target value, the phenomena and the recorded actual value are fed back to a controller developer so as to be fed back to a provider as soon as possible to check and solve the problem.
And disconnecting CANoe software running on the upper computer, disconnecting a power supply, removing the connecting wire harness, and storing the equipment. And (3) arranging the wire harness, and storing the CAPL script so as to test other controllers to be tested or facilitate quickly building a test system for testing when the next test item is required.
The test system and the test method have the advantages that the static current test system and the test method of the vehicle controller with low cost can be built by using the common test equipment of automobile testers to test the static current of the controller so as to verify whether the static current of the controller to be tested meets the design requirement of a developer, and the static current is controlled through the intervention test of the controller end so that the static current cannot exceed the standard when the vehicle is equipped on the whole vehicle, and the risk of occurrence of problems is reduced. The system and the method have the advantages that the CAPL script compiled is simple and easy to expand, when the static flow test requirements of controllers of different projects are met, the static flow test system of the vehicle controller with low cost can be built only by the equipment in the example, the cost investment of hardware facilities for testing and checking the static flow test of the controllers to be tested can be reduced, expensive hardware equipment is not required to be purchased, a special stand is not required to be built, and especially when a plurality of project periods are short, testers and other special equipment resources are insufficient, one or more sets of test systems can be built quickly to perform parallel test once the project test requirements are met, and the system is very significant in reducing manpower and material resources and improving the working efficiency.
The test system and the test method have the advantages that the static current test system and the test method of the vehicle controller with low cost can be built by using the common test equipment of automobile testers to test the static current of the controller so as to verify whether the static current of the controller to be tested meets the design requirements of developers, and the static current is controlled through the intervention test of the controller end so that the static current cannot exceed the standard when the vehicle is equipped on the whole vehicle, and the risk of occurrence of problems is reduced. The CAPL script compiled by the test system and the method is simple and easy to expand, when the static flow test requirements of controllers of different projects are met, the static flow test system of the vehicle controller with low cost can be built by the equipment in the example, the cost investment of hardware facilities for testing and checking the static flow test of the controllers to be tested can be reduced, expensive hardware equipment is not required to be purchased, a special stand is not required to be built, and especially when a plurality of project periods are short, testers and other special equipment resources are insufficient, one or more sets of test systems can be built quickly to carry out parallel test once the project test requirements are met, so that the test system has great significance in reducing manpower and material resources and improving the working efficiency.
The tester can test the controller for electrostatic current according to the system. The test system and the test method of the invention do not need to purchase extra expensive equipment, are beneficial to reducing the cost investment of hardware facilities, can be built by only using the common test tools beside the testers, are simple and easy to copy, and can be used for quickly building a set of equipment and performing the test by using the equipment after the simple training of the experienced testers. The system and the method improve the equipment utilization rate for testers and enterprises, enable the testers to quickly build a plurality of sets of systems to test when facing static current testing tasks of a plurality of controllers of a plurality of vehicle types, reduce the test period, and simultaneously reduce the possibility of equipment loss due to the mounted overcurrent protection device.
The foregoing is merely illustrative of specific embodiments of the present invention, and the scope of the invention is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present invention will be apparent to those skilled in the art within the scope of the present invention. And all that is not described in detail in this specification is well known to those skilled in the art.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Claims (10)
1. An electrostatic flow test system for a vehicle controller, comprising:
multifunctional adjustable stabilized voltage power supply: the power supply is supplied to the whole set of system, and mainly supplies power to the controller to be tested;
automobile CAN box tool: controlling dormancy wakeup and duration of a controller to be tested in the static current test process according to software and scripts in the upper computer;
the upper computer: carrying Vector software and written CAPL script;
overcurrent protection device: the overcurrent protection box with the control switch shields or connects the static current detection device and has four connecting terminals;
static current detection device: detecting static current of the controller to be tested in a dormant period;
and the controller to be tested is electrically connected with the second terminal of the overcurrent protection device through the electrode, the overcurrent protection device is electrically connected with the multifunctional adjustable voltage-stabilizing power supply electrode through the first terminal, and two ends of the electrostatic current detection device are respectively electrically connected with the third terminal and the fourth terminal of the overcurrent protection device.
2. The electrostatic discharge testing system of a vehicle controller according to claim 1, wherein a control switch is disposed between the first terminal and the third terminal connecting harness and between the second terminal and the fourth terminal connecting harness in the overcurrent protection device, and a fuse protector is disposed between the second terminal and the fourth terminal connecting harness, and a fuse fusing current in the fuse protector is greater than a maximum electrostatic discharge peak value of the controller to be tested and is smaller than a "mA" gear safety value of the electrostatic discharge detection device.
3. An electrostatic flow test system for a vehicle controller according to claim 1 or 2, wherein said automotive CAN box tool comprises one or more high speed CAN channels, one or more LIN channels and one or more K-Line channels.
4. An electrostatic flow testing system for a vehicle controller according to claim 1 or 2, wherein said electrostatic flow detection device is a high precision multimeter with a test stylus.
5. The electrostatic flow test system of a vehicle controller of claim 4, wherein said test pencil has a banana head at one end and an alligator clip at the other end.
6. The electrostatic discharge testing system of a vehicle controller according to claim 5, wherein the host computer is a desktop computer or a notebook computer.
7. A method for testing the electrostatic flow of a vehicle controller, comprising the steps of:
s1, building a CAN engineering editing configuration file: controlling the controller to be tested to sleep or wake up and save data in the test process; the test script is compiled, and the test script can be run in the configuration file to control the controller to run, stand by or sleep;
s2, closing a control switch, opening a multifunctional adjustable stabilized voltage supply, and opening the control switch;
s3, powering up the controller to be tested for 30-180 seconds, powering down the controller to be tested, controlling the controller to be tested to sleep by using the test script configuration file in the step S1, and recording the static current value;
s4, comparing the static current value in the S3 with a standard value, and ending the test if the static current value is smaller than the standard value; if the value is larger than the standard value, recording, storing and feeding back.
8. The method for testing the electrostatic discharge current of the vehicle controller according to claim 7, wherein in the step S2, the multifunctional adjustable stabilized voltage supply is set to 14V.
9. The method for testing the electrostatic current of a vehicle controller according to claim 7, wherein in the step S3, the electrostatic current value is an average value of 3 minutes or more.
10. The static electricity flow test method of a vehicle controller according to any one of claims 7 to 9, wherein in step S3, the power-on time of the controller to be tested is 30 seconds.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118012024A (en) * | 2024-04-02 | 2024-05-10 | 深圳市卓驭科技有限公司 | Vehicle-mounted reliability test system and method, control method of upper computer, computer device, computer-readable storage medium and computer program product |
-
2023
- 2023-03-09 CN CN202310219855.2A patent/CN116430824A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118012024A (en) * | 2024-04-02 | 2024-05-10 | 深圳市卓驭科技有限公司 | Vehicle-mounted reliability test system and method, control method of upper computer, computer device, computer-readable storage medium and computer program product |
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