CN106814723B - Testing device and testing system of vehicle control unit - Google Patents
Testing device and testing system of vehicle control unit Download PDFInfo
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- CN106814723B CN106814723B CN201510851796.6A CN201510851796A CN106814723B CN 106814723 B CN106814723 B CN 106814723B CN 201510851796 A CN201510851796 A CN 201510851796A CN 106814723 B CN106814723 B CN 106814723B
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- 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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Abstract
The invention provides a test device and a test system of a vehicle control unit, wherein the device comprises: the input signal testing module comprises a signal input end and a matching module, wherein the signal input end is used for receiving an input testing instruction, the matching module is used for matching a signal input circuit of the vehicle control unit, and the signal input end provides an input testing signal for the vehicle control unit through the matching module; the output signal testing module comprises a signal output end, a testing module and a diagnosis module, wherein the signal output end is used for receiving a driving signal output by a signal output circuit of the vehicle controller, the testing module is used for testing whether the driving signal is effective, and the diagnosis module is used for diagnosing the driving signal; and the power supply module is used for supplying power to the input signal testing module, the output signal testing module and the vehicle control unit. The invention can simply and efficiently verify the function of the whole vehicle controller and has the advantages of simple and convenient operation, low cost and high accuracy.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a test device and a test system of a vehicle control unit.
Background
In the development of modern automobiles, a motor controller, a battery management system and a vehicle control unit are core components of a new energy automobile, and the vehicle control unit is equivalent to the brain of the new energy automobile and used for monitoring the working states of the motor controller and the battery management system, so that the working stability of the vehicle control unit is very important.
The ECU of the whole vehicle controller is a core component for controlling the whole vehicle and is also a main component for measuring the performance and the functional grade of a control system of the whole vehicle, and the performance of the ECU directly influences the control effect of the whole control system. No matter how well the performance of other assemblies of the automobile is, if the whole automobile controller has a problem, the automobile cannot run at a high speed, cannot realize energy recovery, and even has an accident. Therefore, the development of the complete-function vehicle control unit is an essential work task in the production process of the vehicle control system, and the test work in the vehicle control development process is very important.
Aiming at the test of the vehicle controller of the new energy automobile, most manufacturers adopt manual debugging test or semi-automatic manual test at the product production stage, namely adopt a load box to manually operate and test; other manufacturers have used hardware-in-the-loop (HIL) testing methods.
The traditional controller test method has two types, one is in-loop test through controller hardware, and the other is in test by using a load box. However, the hardware is high in construction cost in a loop test field, needs professional experimenters to operate, needs circuit matching aiming at different controllers, and is complex in circuit change and long in period. On the other hand, the load box has a long manufacturing period and high cost, and the load box has the greatest limitation that the load box cannot be reused and cannot support switching of the control platform.
Disclosure of Invention
In view of this, the present invention is directed to provide a testing apparatus for a vehicle control unit, which is capable of simply and efficiently verifying the function of the vehicle control unit, and has the advantages of simple operation, low cost, and high accuracy.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a testing device of a vehicle control unit comprises: the system comprises an input signal testing module, a signal output module and a signal output module, wherein the input signal testing module comprises a signal input end and a matching module, the signal input end is used for receiving an input testing instruction, the matching module is used for matching a signal input circuit of the vehicle control unit according to the electrical attribute of a vehicle related element and generating an input testing signal according to the matched signal input circuit, and the signal input end provides an input testing signal for the vehicle control unit through the matching module; the test module is used for testing whether the driving signal is effective or not, and when the driving signal is judged to be effective, the diagnosis module is used for providing a short-circuit fault to diagnose the signal output circuit of the vehicle controller and judging whether the signal output circuit of the vehicle controller has a fault or not according to a diagnosis result; and the power supply module is used for supplying power to the input signal testing module, the output signal testing module and the whole vehicle controller.
Further, the input signal testing module includes: the digital quantity input module comprises a digital quantity input end and a first matching module, the digital quantity input end is connected with the first matching module and used for receiving a switch digital signal, one end of the first matching module is connected with a constant direct current power supply, and the other end of the first matching module is grounded.
Further, the input signal testing module further includes: the analog quantity input module, the analog quantity input module includes analog signal input module and analog signal test module, the analog signal input module includes analog signal input end and second matching module, the analog signal input end is used for receiving analog signal, the second matching module is used for matching the electrical property that the analog signal of vehicle provided the component, in order to right analog signal converts analog test signal into analog test signal, the analog signal test module includes analog quantity input end and third matching module, the analog quantity input end is used for receiving analog test signal, the one end of third matching module links to each other with invariable DC power supply, the other end ground connection of third matching module.
Further, the first matching module, the second matching module and the third matching module are all potentiometers.
Further, the output signal testing module includes: the low-side driving signal testing module comprises a first matching resistor and a first light emitting tube which are connected in series, one end of the first matching resistor is connected with a constant direct-current power supply, one end of the first light emitting tube is connected with the low-side driving signal output end, the low-side driving signal diagnosing module comprises a first switch, the first switch comprises a first contact, a second contact and a third contact, the first contact is connected with the low-side driving signal output end, the second contact is connected with the constant direct-current power supply, and the third contact is grounded.
Further, the output signal testing module further includes: high limit drive output module, high limit drive output module includes high limit drive signal output, high limit drive signal test module and high limit drive signal diagnostic module, high limit drive signal test module is including the second matched resistance and the second luminotron of establishing ties, the one end of second matched resistance with high limit drive signal output links to each other, the one end ground connection of second luminotron, high limit drive signal diagnostic module includes the second switch, the second switch includes fourth contact, fifth contact and sixth contact, the fourth contact with high limit drive signal output links to each other, the fifth contact links to each other with invariable DC power supply, sixth contact ground connection.
Further, the output signal testing module further comprises: the Pulse Width Modulation (PWM) output module comprises a PWM output end, a PWM test module and a PWM diagnosis module, the PWM test module comprises a third matching resistor and a third light-emitting tube which are connected in series, one end of the third matching resistor is connected with a constant direct current power supply, one end of the third light-emitting tube is connected with the PWM output end, the PWM diagnosis module comprises a third switch, the third switch comprises a seventh contact, an eighth contact and a ninth contact, the seventh contact is connected with the PWM output end, the eighth contact is connected with the constant direct current power supply, and the ninth contact is grounded.
Furthermore, the first light-emitting tube, the second light-emitting tube and the third light-emitting tube are all indicator lamps.
Compared with the prior art, the testing device of the vehicle control unit has the following advantages:
the testing device of the vehicle control unit can complete basic input and output tests and communication tests of the vehicle control unit, can simply and efficiently verify the functions of the vehicle control unit, provides abundant and variable detection means, greatly shortens the development period in the development process of the vehicle control unit, and reduces the development cost and risk; in addition, the device can be used for carrying out circuit re-matching according to different controller platforms, the manufacturing and modification are simple and easy, and the development and test cost of the controller is reduced to the maximum extent. The device has the advantages of simple structure, simple and convenient operation, low cost, reliable operation and high accuracy.
The invention also aims to provide a test system of the vehicle control unit, which can simply and efficiently verify the function of the vehicle control unit and has the advantages of simple operation, low cost and high accuracy.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a test system of a vehicle control unit comprises the vehicle control unit and the test device of the vehicle control unit.
Compared with the prior art, the test system of the vehicle control unit and the test device of the vehicle control unit have the same advantages, and are not described again.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a block diagram of a testing apparatus of a vehicle control unit according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of a power module according to an embodiment of the invention;
fig. 3 is a schematic circuit diagram of a digital input module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of an analog input module according to an embodiment of the present invention;
FIG. 5 is a schematic circuit diagram of a low-side driver output module according to an embodiment of the invention;
FIG. 6 is a schematic circuit diagram of a high-side driver output module according to an embodiment of the invention; and
fig. 7 is a schematic circuit diagram of a PWM output module according to an embodiment of the present invention.
Description of reference numerals:
100-a test device of a vehicle control unit, 110-an input signal test module, 120-an output signal test module and 130-a power supply module.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a block diagram illustrating a test apparatus for a hybrid vehicle controller according to an embodiment of the present invention.
As shown in fig. 1, a test apparatus 100 for a vehicle control unit according to an embodiment of the present invention includes: an input signal test module 110, an output signal test module 120, and a power module 130.
Specifically, the input signal testing module 110 includes a signal input terminal for receiving an input test command and a matching module for matching a signal input circuit of the vehicle control unit according to electrical properties of vehicle-related elements and generating an input test signal according to the matched signal input circuit, and the signal input terminal provides the input test signal for the vehicle control unit through the matching module.
In one embodiment of the present invention, the input signal testing module 110 includes, for example, a digital quantity input module. Specifically, the digital input module comprises a digital input end and a first matching module, the digital input end is connected with the first matching module and used for receiving a switch digital signal, one end of the first matching module is connected with a constant direct-current power supply, and the other end of the first matching module is grounded. Specifically, the digital input module is powered by the power module 130 to provide on/off signal input to the vehicle control unit, such as brake pedal signal input. The circuit matching schematic diagram of the digital quantity input module is shown in fig. 3, wherein a potentiometer R (namely a first matching module) is connected between a power supply voltage and the ground, the output voltage can be changed between 0 and 12V, and the test of the identification range of the digital quantity input voltage of the whole vehicle controller can be completed. The switch can control the on-off of the signal, and can complete the test of the state of the digital quantity input signal of the whole vehicle controller. The resistance value of the potentiometer R can be matched and selected according to a digital input interface circuit (a giant digital input end) of the vehicle controller.
Further, the input signal testing module 110 further includes, for example, an analog input module. Specifically, analog input module includes analog signal input module and analog signal test module, analog signal input module includes analog signal input end and second matching module, analog signal input end is used for receiving analog signal, the second matching module is used for matching the electrical property of the analog signal providing component of vehicle to analog signal conversion becomes analog test signal, analog signal test module includes analog input end and third matching module, the analog input end is used for receiving analog test signal, the one end of third matching module links to each other with invariable DC power supply, the other end ground connection of third matching module. Specifically, the analog input module is powered from a power module 130, which is intended to provide analog signal inputs to the vehicle control unit, such as an accelerator pedal signal and a temperature sensor signal input. The circuit matching schematic diagram of the analog input module is shown in fig. 4, wherein a potentiometer R1 (i.e., a second matching module) and a resistor R2 are selected according to the electrical property of an accelerator pedal, and the output signal of the potentiometer can simulate the signal input of the accelerator pedal, so that the test of the signal input of the accelerator pedal of the vehicle control unit can be completed. The potentiometer R3 (namely the third matching module) is connected between a power supply voltage and the ground, the output voltage can be varied between 0V and 12V, and the test of the analog quantity input signal of the whole vehicle controller can be provided. The resistance value R3 can be matched and selected according to the analog input interface circuit (i.e. analog input end) of the vehicle controller.
In an embodiment of the present invention, the first matching module, the second matching module, and the third matching module are all potentiometers, for example.
The output signal testing module 120 includes a signal output end, a testing module and a diagnosis module, the signal output end is respectively connected to the testing module and the diagnosis module, the signal output end is used for receiving a driving signal output by a signal output circuit of the vehicle controller, the testing module is used for testing whether the driving signal is valid, and when the driving signal is judged to be valid, the diagnosis module is used for providing a short-circuit fault to diagnose the driving signal, and judging whether the signal output circuit of the vehicle controller has a fault according to a diagnosis result.
In one embodiment of the present invention, the output signal testing module 120 comprises, for example, a low-side driven output module. Specifically, the low-side driving output module comprises a low-side driving signal output end, a low-side driving signal testing module and a low-side driving signal diagnosis module, the low-side driving signal testing module comprises a first matching resistor and a first light emitting tube which are connected in series, one end of the first matching resistor is connected with a constant direct current power supply, one end of the first light emitting tube is connected with the low-side driving signal output end, the low-side driving signal diagnosis module comprises a first switch, the first switch comprises a first contact, a second contact and a third contact, the first contact is connected with the low-side driving signal output end, the second contact is connected with the constant direct current power supply, and the third contact is grounded. Specifically, the low-side driving output module is used for receiving a low-side driving signal sent by the vehicle control unit and driving a relay, an electromagnetic valve, or the like. As shown in fig. 5, the low-side driving output of the vehicle control unit is connected with the light emitting diode (i.e., the first light emitting diode) and the matching resistor (i.e., the first matching resistor) and is pulled up to the power supply, and the low-side driving output of the controller can be judged to be effective by the light emitting diode. The three-touch switch (namely the first switch) can provide fault injection of short circuit to a power supply or short circuit to ground, and the test of the diagnosis of the low-side drive output hardware of the controller can be realized. The resistance value of the first matching resistor R can be determined according to the load driven by the actual controller, such as a relay coil resistor or a solenoid valve coil resistor.
Further, the output signal testing module 120 further includes, for example, a high-side driving output module. Specifically, high limit drive output module includes high limit drive signal output part, high limit drive signal test module and high limit drive signal diagnosis module, high limit drive signal test module is including second matched resistor and the second luminotron of establishing ties, the one end of second matched resistor links to each other with high limit drive signal output part, the one end ground connection of second luminotron, high limit drive signal diagnosis module includes the second switch, the second switch includes the fourth contact, fifth contact and sixth contact, the fourth contact links to each other with high limit drive signal output part, the fifth contact links to each other with invariable DC power supply, sixth contact ground connection. Specifically, the high-side driving output module is used for receiving a high-side driving signal sent by the vehicle control unit and driving the relay. As shown in fig. 6, the high-side driving output module of the vehicle control unit pulls down the light emitting diode (i.e., the second light emitting diode) and the matching resistor (i.e., the second matching resistor) to ground, and can judge that the high-side driving output of the controller is effective by lighting the light emitting diode. The three-touch switch (namely the second switch) can provide fault injection of short circuit to a power supply or short circuit to the ground, and the test of high-side drive output hardware diagnosis of the controller can be realized. The resistance value of the second matching resistor R can be determined according to the load driven by the actual controller, such as the coil resistor of the relay.
Further, the output signal testing module 120, for example, further includes: and the PWM output module is used for pulse width modulation. Specifically, the pulse width modulation PWM output module comprises a PWM output end, a PWM test module and a PWM diagnosis module, the PWM test module comprises a third matching resistor and a third light emitting tube which are connected in series, one end of the third matching resistor is connected with a constant direct current power supply, one end of the third light emitting tube is connected with the PWM output end, the PWM diagnosis module comprises a third switch, the third switch comprises a seventh contact, an eighth contact and a ninth contact, the seventh contact is connected with the PWM output end, the eighth contact is connected with the constant direct current power supply, and the ninth contact is grounded. Specifically, the purpose of the pulse width modulation PWM output module is to receive a PWM driving signal from the vehicle controller, and to drive actuators such as a water pump. A circuit matching schematic diagram of the pulse width modulation PWM output module is shown in fig. 7, the PWM driving output of the vehicle control unit is connected to a light emitting diode (i.e., a third light emitting diode) and a matching resistor (i.e., a third matching resistor) and is pulled up to a power supply, the PWM output of the controller can be judged to be effective by the light emitting diode being lit up, and the duty ratio of the PWM signal output by the controller can be judged by the brightness. The three-touch switch (i.e. the third switch) can provide fault injection of short circuit to the power supply or short circuit to the ground, and can realize the test of the diagnosis of the PWM driving output hardware of the controller. The resistance value of the third matching resistor R can be determined according to the load driven by the actual controller, such as a pull-up resistor when the water pump works.
In an embodiment of the invention, the first light-emitting tube, the second light-emitting tube and the third light-emitting tube all flow into the indicator lamps.
The power module 130 is used for supplying power to the input signal testing module 110, the output signal testing module 120 and the vehicle control unit. Specifically, the power module 130 supplies power to the vehicle control unit, the digital input module, the analog input module, the low-side driving output module, the high-side driving output module, and the PWM output module. As shown in fig. 2, a power supply circuit diagram of the power module 130 is that a 12V dc regulated power supply supplies power to a load board power module, a switch 1 controls a whole vehicle controller KL30(UB) to be powered on, a switch 2 controls a whole vehicle controller IG to be powered on, a switch 3 controls a high-side driving power supply (V _ HSD) to be powered on, and indicator lamps are respectively provided to display power states.
In a specific embodiment, for example, the power module 130, the digital input module, the analog input module, the low-side driving output module, the high-side driving output module, and the PWM output module may be integrated on a 400 × 300 circuit board, and all electrical components are soldered and connected through a reasonable layout, so as to obtain the testing apparatus 100 for a vehicle control unit according to the embodiment of the present invention. The size of the circuit board can be adjusted according to actual requirements. Therefore, the device has a short manufacturing period (generally 10 days), a simple manufacturing process, low cost and short time consumption, and can be used for carrying out circuit re-matching according to different controller platforms and supporting switching of different controller platforms. Through the test verification of the vehicle controller in the research, the device has the advantages of simple and convenient operation, accurate and reliable test result and the like.
In conclusion, according to the testing device of the vehicle control unit, the basic input and output test and the communication test of the vehicle control unit can be completed, the functions of the vehicle control unit can be verified simply and efficiently, abundant and variable detection means are provided, the development period is greatly shortened in the development process of the vehicle control unit, and the development cost and risk are reduced; in addition, the device can be used for carrying out circuit re-matching according to different controller platforms, the manufacturing and modification are simple and easy, and the development and test cost of the controller is reduced to the maximum extent. The device has the advantages of simple structure, simple and convenient operation, low cost, reliable operation and high accuracy.
Further, the embodiment of the invention discloses a test system of a vehicle control unit, which comprises the vehicle control unit and the test device of the vehicle control unit in the embodiment. The test system of the vehicle control unit can complete basic input and output tests and communication tests of the vehicle control unit, can simply and efficiently verify the functions of the vehicle control unit, provides abundant and variable detection means, greatly shortens the development period in the development process of the vehicle control unit, and reduces the development cost and risk; in addition, the test system of the whole vehicle controller can be used for carrying out circuit re-matching according to different controller platforms, the manufacture and modification are simple and easy, and the development and test cost of the controller is reduced to the maximum extent. Therefore, the device has the advantages of simple structure, simple and convenient operation, low cost, reliable operation and high accuracy.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The testing device of the vehicle control unit is characterized by comprising the following components:
the system comprises an input signal testing module, a signal output module and a signal output module, wherein the input signal testing module comprises a signal input end and a matching module, the signal input end is used for receiving an input testing instruction, the matching module is used for matching a signal input circuit of the vehicle control unit according to the electrical attribute of a vehicle related element and generating an input testing signal according to the matched signal input circuit, and the signal input end provides an input testing signal for the vehicle control unit through the matching module;
the test module is used for testing whether the driving signal is effective or not, and when the driving signal is judged to be effective, the diagnosis module is used for providing a short-circuit fault to diagnose the signal output circuit of the vehicle controller and judging whether the signal output circuit of the vehicle controller has a fault or not according to a diagnosis result;
and the power supply module is used for supplying power to the input signal testing module, the output signal testing module and the whole vehicle controller.
2. The testing device of the vehicle control unit according to claim 1, wherein the input signal testing module comprises:
the digital quantity input module comprises a digital quantity input end and a first matching module, the digital quantity input end is connected with the first matching module and used for receiving a switch digital signal, one end of the first matching module is connected with a constant direct current power supply, and the other end of the first matching module is grounded.
3. The testing device of the vehicle control unit according to claim 2, wherein the input signal testing module further comprises:
the analog quantity input module, the analog quantity input module includes analog signal input module and analog signal test module, the analog signal input module includes analog signal input end and second matching module, the analog signal input end is used for receiving analog signal, the second matching module is used for matching the electrical property that the analog signal of vehicle provided the component, with analog signal converts analog test signal into, the analog signal test module includes analog quantity input end and third matching module, the analog quantity input end is used for receiving analog test signal, the one end of third matching module links to each other with invariable DC power supply, the other end ground connection of third matching module.
4. The testing device of the vehicle control unit according to claim 3, wherein the first matching module, the second matching module and the third matching module are all potentiometers.
5. The testing device of the vehicle control unit according to claim 1, wherein the output signal testing module comprises:
the low-side driving signal testing module comprises a first matching resistor and a first light emitting tube which are connected in series, one end of the first matching resistor is connected with a constant direct-current power supply, one end of the first light emitting tube is connected with the low-side driving signal output end, the low-side driving signal diagnosing module comprises a first switch, the first switch comprises a first contact, a second contact and a third contact, the first contact is connected with the low-side driving signal output end, the second contact is connected with the constant direct-current power supply, and the third contact is grounded.
6. The testing device of the vehicle control unit according to claim 5, wherein the output signal testing module further comprises:
high limit drive output module, high limit drive output module includes high limit drive signal output, high limit drive signal test module and high limit drive signal diagnostic module, high limit drive signal test module is including the second matched resistance and the second luminotron of establishing ties, the one end of second matched resistance with high limit drive signal output links to each other, the one end ground connection of second luminotron, high limit drive signal diagnostic module includes the second switch, the second switch includes fourth contact, fifth contact and sixth contact, the fourth contact with high limit drive signal output links to each other, the fifth contact links to each other with invariable DC power supply, sixth contact ground connection.
7. The testing device of the vehicle control unit according to claim 6, wherein the output signal testing module further comprises:
the Pulse Width Modulation (PWM) output module comprises a PWM output end, a PWM test module and a PWM diagnosis module, the PWM test module comprises a third matching resistor and a third light-emitting tube which are connected in series, one end of the third matching resistor is connected with a constant direct current power supply, one end of the third light-emitting tube is connected with the PWM output end, the PWM diagnosis module comprises a third switch, the third switch comprises a seventh contact, an eighth contact and a ninth contact, the seventh contact is connected with the PWM output end, the eighth contact is connected with the constant direct current power supply, and the ninth contact is grounded.
8. The testing device of the vehicle control unit according to claim 7, wherein the first, second and third light emitting tubes are indicator lamps.
9. A test system of a vehicle control unit is characterized by comprising:
a vehicle control unit; and
testing device of a hybrid vehicle controller according to any of claims 1 to 8.
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| CN104331068B (en) * | 2014-10-21 | 2018-03-27 | 普华基础软件股份有限公司 | A kind of test device based on electronic control unit |
| CN104850112A (en) * | 2014-11-04 | 2015-08-19 | 北汽福田汽车股份有限公司 | Electric automobile vehicle controller test method and system |
| CN204595599U (en) * | 2015-04-01 | 2015-08-26 | 上海汽车集团股份有限公司 | Based on the automobile electronic controller general-utility test platform of CANoe |
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2015
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