CN115808917A - Air bag rack test system - Google Patents
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Abstract
The invention provides a safety airbag bench test system, which comprises: the upper computer system is used for extracting the simulation environment requirement and the test requirement of the safety airbag control unit; air bag test system, air bag test system include multiunit resistance group, and multiunit resistance group is used for simulating the operating mode of the safety belt module of vehicle and air bag module, and wherein, air bag test system passes through CAN bus and upper computer system connection. By applying the technical scheme of the invention, the real hardware of the safety belt module and the safety airbag module is not required to be accessed, and the simulation test can be carried out on the safety airbag test system by using the upper computer system, so that the function and fault diagnosis of the safety airbag control unit are further completed. The safety airbag rack test system is simple in structure, low in cost, simple to operate, comprehensive in function verification, free of carrying on a HIL rack for testing, time cost is greatly reduced, material cost and labor cost are greatly reduced, and test efficiency is improved.
Description
Technical Field
The invention relates to the field of automobile automation technology testing, in particular to an air bag rack testing system.
Background
With the continuous development of the automobile industry, more and more safety guarantee mechanisms are applied to the automobile field, wherein an airbag is one of passive safety technologies. The safety airbag control unit is an important vehicle-mounted safety device and can send out a warning that a safety belt is not fastened, and when a vehicle collides, the safety airbag is detonated, the safety belt is tensioned, and a protection effect is achieved on a driver and a passenger. The safety airbag is vital, so that the function of the safety airbag is required to be fully and effectively verified, the verification of the function and fault diagnosis of the conventional safety airbag control unit needs to be carried out on an HIL (high-impact laser) rack, and the rack is built from the design of a scheme to the examination, approval, purchase, execution and maintenance in the later period, so that a large amount of time cost, material cost and labor cost are required, the cost is high, and the efficiency is low.
Disclosure of Invention
The invention mainly aims to provide an air bag bench test system to solve the problems that in the prior art, the verification of the functions and fault diagnosis of an air bag control unit needs to be carried out on an HIL bench, and a large amount of time and cost are needed.
In order to achieve the above object, according to one aspect of the present invention, there is provided an airbag bench test system including: the upper computer system is used for extracting the simulation environment requirement and the test requirement of the safety airbag control unit; air bag test system, air bag test system include multiunit resistance group, and multiunit resistance group is used for simulating the operating mode of the safety belt module of vehicle and air bag module, and wherein, air bag test system passes through CAN bus and upper computer system connection.
Further, the airbag test system includes: and the safety airbag ECU is connected with the multiple groups of resistor groups to form a loop, and is used for receiving collision signals and controlling the safety airbag to detonate.
Further, the airbag testing system further comprises: the sliding rheostat is connected with the safety airbag ECU to form a loop, the sliding rheostat is connected with the multiple groups of resistor groups in series or in parallel, and the sliding rheostat is used for testing whether the resistors in the multiple groups of resistor groups have over-high or over-low faults or not.
Further, the multi-group resistor group comprises: the safety belt module comprises a first resistor group, the first resistor group is connected with an air bag ECU to form a loop, the first resistor group is used for simulating the working condition of a left safety belt module in the safety belt modules, the first resistor group comprises a first pre-tightening resistor and a first buckle resistor, the first pre-tightening resistor and the first buckle resistor are arranged in parallel, the first pre-tightening resistor is used for simulating the working condition of a left safety belt pre-tightening device in the left safety belt module, and the first buckle resistor is used for simulating the working condition of the left safety belt buckle device in the left safety belt module.
Further, the multi-group resistor group comprises: the second resistor group is connected with the safety airbag ECU to form a loop, the second resistor group is used for simulating the working condition of a right safety belt module in the safety belt modules, the second resistor group comprises a second pre-tightening resistor and a second buckle resistor, the second pre-tightening resistor and the second buckle resistor are arranged in parallel, the second pre-tightening resistor is used for simulating the working condition of a right safety belt pre-tightening device in the right safety belt module, and the second buckle resistor is used for simulating the working condition of the right safety belt buckle device in the right safety belt module.
Further, the multi-group resistor group comprises: the third resistance group is connected with the safety airbag ECU to form a loop, the third resistance group is used for simulating the working condition of a driver safety belt module in the plurality of safety belt modules, the third resistance group comprises a third pre-tightening resistor and a third buckling resistor, the third pre-tightening resistor and the third buckling resistor are arranged in parallel, the third pre-tightening resistor is used for simulating the working condition of a driver safety belt pre-tightening device in the driver safety belt module, and the third buckling resistor is used for simulating the working condition of the driver safety belt buckling device in the driver safety belt module.
Further, the multi-group resistor group comprises: the fourth resistor group is connected with the safety airbag ECU to form a loop, the fourth resistor group is used for simulating the working condition of a copilot safety belt module in the safety belt modules, the fourth resistor group comprises a fourth pre-tightening resistor and a fourth buckling resistor, the fourth pre-tightening resistor and the fourth buckling resistor are arranged in parallel, the fourth pre-tightening resistor is used for simulating the working condition of a copilot safety belt pre-tightening device in the copilot safety belt module, and the fourth buckling resistor is used for simulating the working condition of the copilot safety belt buckling device in the copilot safety belt module.
Further, the multi-group resistor group comprises: the fifth resistor group is connected with the airbag ECU to form a loop, and is used for simulating the working condition of the airbag module, and comprises a first airbag resistor, a second airbag resistor, a third airbag resistor, a fourth airbag resistor, a fifth airbag resistor and a sixth airbag resistor, which are arranged in parallel, wherein the first airbag resistor is used for simulating the working condition of the front-driver airbag device in the airbag module, the second airbag resistor is used for simulating the working condition of the driver-side airbag device in the airbag module, the third airbag resistor is used for simulating the working condition of the front-driver airbag device in the airbag module, the fourth airbag resistor is used for simulating the working condition of the front-driver airbag device in the airbag module, the fifth airbag resistor is used for simulating the working condition of the left-side airbag device in the airbag module, and the sixth airbag resistor is used for simulating the working condition of the right-side airbag device in the airbag module.
Further, the airbag test system further includes: the direct current stabilized voltage power supply is connected with the safety airbag ECU through a hard wire to form a loop; and the fault lamp is connected with the safety airbag ECU through a hard wire to form a loop, and is used for reminding system faults.
Further, the airbag test system further includes: the sensor module comprises a plurality of sensors, each sensor adopts a real sensor, each sensor is connected with the safety airbag ECU to form a loop, and the sensors are used for testing whether the sensors have communication faults and electrical faults; and the oscilloscope is connected with the airbag ECU through a BNC wire to form a loop and is used for observing the waveform of an output signal of the collision hard wire.
By applying the technical scheme of the invention, the simulation environment requirement and the test requirement of the safety airbag control unit are extracted through the upper computer system, the safety airbag test system comprises a plurality of groups of resistor groups, the working conditions of the safety belt module and the safety airbag module of the vehicle are simulated by the plurality of groups of resistor groups, the upper computer system is connected with the safety airbag test system through the CAN bus, the real hardware of the safety belt module and the safety airbag module is not required to be accessed, the simulation test CAN be carried out on the safety airbag test system only by utilizing the upper computer system, and further the function and the fault diagnosis of the safety airbag control unit are completed. The safety airbag rack test system is simple in structure, low in cost, simple to operate, comprehensive in function verification, free of carrying of the HIL rack for testing, and capable of greatly reducing time cost, material cost and labor cost, not occupying space and improving test efficiency.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a schematic structural diagram of an embodiment of an airbag bench test system according to the present invention;
fig. 2 shows a schematic structural diagram of an embodiment of the upper computer system according to the present invention;
fig. 3 shows a schematic structural diagram of an embodiment of an airbag testing system according to the invention.
Wherein the figures include the following reference numerals:
1. an upper computer system; 2. an airbag test system; 3. a third air bag resistor; 4. a fourth air bag resistor; 5. a fifth air bag resistor; 6. a sixth air bag resistance; 7. a third pre-tightening resistor; 8. a third buckle resistor; 9. a fourth snap resistor; 10. a fourth pre-tightening resistor;
11. a first pre-tightening resistor; 12. a first buckle resistor; 13. a second snap resistor; 14. a second pre-tightening resistor; 15. a first bladder resistance; 16. a second air bag resistor;
101. a CANoe observation recording module; 102. a CANoe script module; 103. a CANoe operation module; 111. a Trace interface; 112. a Graphics interface; 113. a data recording interface; 121. CAN message simulation script;
122. a CheckSum/Livecounter invalid value script; 123. simulating an IG ON/IG OFF script; 124. diagnosing an instruction script; 125. simulating a message start/stop sending script; 126.CAN signal invalid value script; 131. a Panel operation Panel; 132. a CAN IG module; 133. the Diagnostics Console interface;
201. a left side belt module; 2011. a left side seatbelt pretensioning device; 2012. a left side safety belt buckle device;
202. a right side seat belt module; 2021. a right side safety belt pre-tightening device; 2022. a right side safety belt buckle device;
203. a driver seat belt module; 2031. a driver seatbelt pretensioning device; 2032. a driver harness buckle device;
204. a secondary driving safety belt module; 2041. a copilot safety belt pre-tightening device; 2042. a secondary driving safety belt buckle device;
205. an airbag module; 2051. a driver front airbag device; 2052. a driver-side airbag device; 2053. a front passenger airbag device; 2054. a passenger-side airbag device; 2055. a left airbag device; 2056. a right airbag device;
206. a DC regulated power supply;
207. a sensor module;
208. a fault light;
209. an airbag ECU;
210. an oscilloscope;
211. a slide rheostat.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, and in the drawings, it is possible to enlarge the thicknesses of layers and regions for clarity, and the same reference numerals are used to designate the same devices, and thus the description thereof will be omitted.
Referring to fig. 1-3, an airbag bench test system is provided according to an exemplary embodiment of the present application.
Specifically, air bag rack test system includes upper computer system 1 and air bag test system 2, and upper computer system 1 is used for drawing air bag the control unit's of air bag emulation environment demand and test demand, and air bag test system 2 includes multiunit resistance group, and multiunit resistance group is used for simulating the operating mode of the safety belt module of vehicle and air bag module 205, and wherein, air bag test system 2 passes through the CAN bus and is connected with upper computer system 1.
Use the technical scheme of this embodiment, draw air bag the control unit's of air bag emulation environment demand and test demand through upper computer system 1, air bag test system 2 includes multiunit resistance group, with the operating mode of the safety belt module of multiunit resistance group simulation vehicle and air bag module, pass through CAN bus connection with upper computer system 1 and air bag test system 2, do not need to insert the real hardware of safety belt module and air bag module 205, only utilize upper computer system just CAN carry out the emulation test to air bag test system, and then accomplish air bag the control unit's of air bag function and failure diagnosis. The safety airbag rack test system is simple in structure, low in cost, simple to operate, comprehensive in function verification, free of carrying of the HIL rack for testing, and capable of greatly reducing time cost, material cost and labor cost, not occupying space and improving test efficiency.
As shown in fig. 2, the upper computer system 1 includes: a CANoe observation record module 101, a CANoe script module 102 and a CANoe operation module 103. The upper computer system 1 sends a command to the air bag test system 2 through the CANoe script module 102 and the CANoe operation module 103 to control the operation of the whole system, and meanwhile, the upper computer system 1 acquires the state information and the alarm information of the air bag test system 2 in real time through the CANoe observation and recording module. Specifically, the CANoe observation recording module 101 is configured to observe and record data required by a test of a small rack test system of an airbag control unit, the CANoe script module 102 is configured to construct a simulation environment based on a script set of a Capl script language to meet a test requirement, and the CANoe operation module 103 is configured to perform a test procedure to control the CANoe script module 102. The CANoe observation recording module 101 includes a Trace interface 111, a Graphics interface 112, and a data recording interface 113. The CANoe script module 102 includes a CAN message emulation script 121, a CheckSum/Livecount invalid value script 122, an analog IG ON/IG OFF script 123, a diagnostic instruction script 124, an emulation message start/stop transmission script 125, and a CAN signal invalid value script 126. The CANoe operations module 103 includes a Panel operations Panel 131, a CAN IG module 132, and a Diagnostics Console interface 133. In this embodiment, the upper computer system 1 extracts the simulation environment requirement and the test requirement of the airbag control unit based on the test environment of the airbag rack test system, and simulates a message having CheckSum/Livecounter or a message requiring a signal having a specific logic through the CAN message simulation script 121, so as to meet the simulation environment requirement of the airbag control unit. Through the CheckSum/Livecount invalid value script 122, the IG ON/IG OFF script 123 is simulated, the simulation message starts/stops sending the script 125, and the CAN signal invalid value script 126 meets various testing requirements including fault diagnosis and configuration code modification. The diagnosis instruction is used for reading and writing data or state in the controller, a common diagnosis instruction set is organized into a diagnosis instruction script 124, a plurality of variables needing to be modified exist in the test process, and the set is organized into a Panel operation Panel 131 for management. Some messages without CheckSum/Livecounter exist in the simulation environment of the airbag control unit, and are organized in the CAN IG module 132 for management, so that the unusual diagnosis instructions do not need to generate scripts, and are organized in the Diagnostics Console interface 133. The Trace interface 111 is used for displaying data values, the Graphics interface is used for displaying data curves, and the data recording interface 113 is used for recording data. The diagnostic instruction script 124 is a diagnostic instruction set autonomously developed based on CANoe CAPL language, and the functions that can be realized include: the test method has the advantages that the test method can quickly enter an expansion mode through safe access of the safety air bag control unit, quickly modify the mode of the safety air bag control unit, quickly modify the configuration code of the safety air bag control unit, quickly read the part number and the version number of the safety air bag control unit, measure the fault maturity time and the like, and greatly improves the test efficiency.
As shown in fig. 3, the airbag testing system 2 includes an airbag ECU209, the airbag ECU209 is connected with a plurality of resistor sets to form a loop, and the airbag ECU209 is configured to receive a collision signal and control the initiation of the airbag. In this embodiment, air bag ECU209 is by the control ware, forms many return circuits through being connected air bag ECU209 and multiunit resistance group, and multiunit resistance group can simulate the operating mode of the safety belt module of vehicle and air bag module to feed back air bag ECU209 with the operating mode information of simulation, thereby can carry out virtual simulation test to air bag ECU 209. The air bag bench test system is simple in structure and easy to operate, time cost is reduced, the HIL bench does not need to be carried, and the technical effect of testing functions and fault diagnosis of the air bag control unit is achieved.
Further, the airbag testing system 2 further includes a sliding rheostat 211, the sliding rheostat 211 is connected with the airbag ECU209 to form a loop, the sliding rheostat 211 is connected in series or in parallel with the plurality of resistor groups, and the sliding rheostat 211 is used for testing whether each resistor in the plurality of resistor groups has a fault that the resistance value is too high or too low. Specifically, the resistance of the sliding rheostat 211 is adjustable, the range meets 0-10K Ω, and the multiple loops formed by the multiple groups of resistor groups and the airbag ECU209 are tested to determine whether the loop resistance is too high or too low, and the electrical faults of the seat belt module and the airbag module of the vehicle are detected. In this embodiment, need not build the HIL rack, only need the resistance and the slide rheostat 211 of some specific resistances, just can detect whether have electrical fault in safety belt module and the air bag module, this scheme is simple convenient, has saved and has built the required a large amount of time cost of HIL rack, material resources cost and human cost, and is with low costs, efficient.
As shown in fig. 3, the multiple groups of resistor groups include a first resistor group, the first resistor group is connected with the airbag ECU209 to form a loop, the first resistor group is used to simulate a working condition of a left side seatbelt module 201 in the multiple seatbelt modules, the first resistor group includes a first pre-tightening resistor 11 and a first buckle resistor 12, the first pre-tightening resistor 11 and the first buckle resistor 12 are arranged in parallel, the first pre-tightening resistor 11 is used to simulate a working condition of a left side seatbelt pre-tightening device 2011 in the left side seatbelt module 201, and the first buckle resistor 12 is used to simulate a working condition of a left side seatbelt buckle device 2012 in the left side seatbelt module 201. According to the arrangement, real hardware does not need to be accessed, and the technical effects of detecting the left safety belt unbuckled reminding function, the configuration code function and the electric faults of the safety belt are realized only by detecting whether the first pre-tightening resistor 11 and the first buckle resistor 12 have the electric faults. Specifically, the slide rheostat 211 is used for replacing the first pre-tightening resistor 11 and the first buckle resistor 12 to be connected into a loop respectively, the resistance values of the slide rheostat 211 are increased and decreased to simulate the occupation of left-side personnel and the buckle insertion and extraction operation of a left-side safety belt, and the left-side safety belt unbuckled reminding function test is completed.
Further, the multiple groups of resistor groups include a second resistor group, the second resistor group is connected with the airbag ECU209 to form a loop, the second resistor group is used for simulating the working condition of the right side seatbelt module 202 in the multiple seatbelt modules, the second resistor group includes a second pre-tightening resistor 14 and a second buckle resistor 13, the second pre-tightening resistor 14 and the second buckle resistor 13 are arranged in parallel, the second pre-tightening resistor 14 is used for simulating the working condition of the right side seatbelt pre-tightening device 2021 in the right side seatbelt module 202, and the second buckle resistor 13 is used for simulating the working condition of the right side seatbelt buckle device 2022 in the right side seatbelt module 202. In this embodiment, real hardware does not need to be accessed, and the technical effects of detecting the left side seat belt unfastening reminding function, the configuration code function and the seat belt electrical fault are achieved only by detecting whether the second pre-tightening resistor 14 and the second buckle resistor 13 have the electrical fault. Specifically, the slide rheostat 211 is used for replacing the second pre-tightening resistor 14 and the second buckle resistor 13 to be connected into a loop respectively, and the resistance values of the slide rheostat 211 are increased and decreased to simulate occupation of people on the right side and the operation of inserting and pulling out a buckle of a safety belt on the right side, so that the function test of reminding that the safety belt on the right side is not tied is completed.
Further, the multiple groups of resistor groups include a third resistor group, the third resistor group is connected with the airbag ECU209 to form a loop, the third resistor group is used for simulating the working condition of the driver seat belt module 203 in the multiple seat belt modules, the third resistor group includes a third pre-tightening resistor 7 and a third buckling resistor 8, the third pre-tightening resistor 7 and the third buckling resistor 8 are arranged in parallel, the third pre-tightening resistor 7 is used for simulating the working condition of the driver seat belt pre-tightening device 2031 in the driver seat belt module 203, and the third buckling resistor 8 is used for simulating the working condition of the driver seat belt buckle device 2032 in the driver seat belt module 203. The setting does not need to be accessed into real hardware, and the technical effects of detecting the unbuckled reminding function, the configuration code function and the electric fault of the safety belt of the driver are realized only by detecting whether the third pre-tightening resistor 7 and the third buckling resistor 8 have the electric fault. Specifically, the slide rheostat 211 is used for replacing a third pre-tightening resistor 7 and a third buckling resistor 8 to be connected into a loop respectively, and the resistance values of the slide rheostat 211 are increased and decreased to simulate the driver occupation and simulate the operations of inserting and pulling out a buckle of a safety belt of the driver, so that the function test of the safety belt unfastening reminding function of the driver is completed.
Further, the multiple groups of resistor groups include a fourth resistor group, the fourth resistor group is connected with the airbag ECU209 to form a loop, the fourth resistor group is used for simulating the working condition of the copilot seat belt module 204 in the multiple seat belt modules, the fourth resistor group includes a fourth pre-tightening resistor 10 and a fourth buckle resistor 9, the fourth pre-tightening resistor 10 and the fourth buckle resistor 9 are arranged in parallel, the fourth pre-tightening resistor 10 is used for simulating the working condition of the copilot seat belt pre-tightening device 2041 in the copilot seat belt module 204, and the fourth buckle resistor 9 is used for simulating the working condition of the copilot seat belt buckle device 2042 in the copilot seat belt module 204. In this embodiment, real hardware does not need to be accessed, and the technical effects of detecting the non-fastening reminding function, the configuration code function and the electrical fault of the seat belt of the passenger car are achieved only by detecting whether the fourth pre-tightening resistor 10 and the fourth buckling resistor 9 have the electrical fault. Specifically, the sliding rheostat 211 is used for replacing a fourth pre-tightening resistor 10 and a fourth buckling resistor 9 to be connected into a loop, the resistance value of the sliding rheostat 211 is increased or decreased to simulate occupation of a copilot and simulate buckling insertion and extraction operations of a copilot safety belt, and therefore the function test of the non-fastening reminding function of the copilot safety belt is completed.
Further, the plurality of sets of resistors include a fifth resistor set, the fifth resistor set is connected with the airbag ECU209 to form a loop, the fifth resistor set is configured to simulate a working condition of the airbag module 205, the fifth resistor set includes a first airbag resistor 15, a second airbag resistor 16, a third airbag resistor 3, a fourth airbag resistor 4, a fifth airbag resistor 5, and a sixth airbag resistor 6, the first airbag resistor 15, the second airbag resistor 16, the third airbag resistor 3, the fourth airbag resistor 4, the fifth airbag resistor 5, and the sixth airbag resistor 6 are arranged in parallel, the first airbag resistor 15 is configured to simulate a working condition of a front driver airbag device 2051 in the airbag module 205, the second airbag resistor 16 is configured to simulate a working condition of a driver side airbag device 2052 in the airbag module 205, the third airbag resistor 3 is configured to simulate a working condition of the front driver side airbag device 3 in the airbag module 205, the fourth airbag resistor 4 is configured to simulate a working condition of a front driver side airbag device 2054 in the airbag module 205, the fifth airbag resistor 2055 is configured to simulate a working condition of the right side airbag device 2056 in the airbag module 205, and the fifth airbag resistor is configured to simulate a working condition of the sixth airbag module 2056. In this embodiment, the working condition of the whole airbag module 205 on the vehicle can be simulated through the first airbag resistor 15, the second airbag resistor 16, the third airbag resistor 3, the fourth airbag resistor 4, the fifth airbag resistor 5 and the sixth airbag resistor 6, and the test of the airbag configuration code function and the airbag electrical fault can be completed without accessing real equipment, so that the operation is simple, and the time cost is further saved. Specifically, the sliding rheostat 211 is used for replacing the first air bag resistor 15, the second air bag resistor 16, the third air bag resistor 3, the fourth air bag resistor 4, the fifth air bag resistor 5 and the sixth air bag resistor 6 to be connected into a loop, and the over-high resistance value and the over-low resistance value fault test of the air bag loop is carried out by increasing and decreasing the resistance value of the sliding rheostat 211.
In one embodiment of the present application, the airbag testing system 2 further includes a dc regulated power supply 206 and a fault lamp 208, the dc regulated power supply 206 is connected to the airbag ECU209 through a hard wire to form a loop, the fault lamp 208 is connected to the airbag ECU209 through a hard wire to form a loop, and the fault lamp 208 is used for warning system faults. In the embodiment, the whole airbag testing system 2 is powered by the direct-current stabilized power supply 206, and in the testing process, if the airbag testing system 2 has a fault, the fault is reminded by the fault lamp 208. Specifically, can light or twinkle through trouble lamp 208 in order to remind the trouble through trouble lamp 208, further make whole air bag rack test system's simple structure, convenient operation, need not set up the HIL rack in addition, can accomplish the test to air bag control unit's function and failure diagnosis. The voltage of the direct-current stabilized power supply 206 is adjustable, the range can meet 0-20V, the positive end and the negative end of the direct-current stabilized power supply 206 are respectively connected with a power line of the airbag ECU209 and a system ground line PIN angle through hard lines, and the direct-current stabilized power supply 206 can conduct over-voltage and under-voltage fault tests on the airbag ECU209 by increasing and decreasing the power supply voltage value of the direct-current stabilized power supply 206 besides supplying power to the airbag test system 2.
In another embodiment of the present application, the airbag testing system 2 further includes a sensor module 207 and an oscilloscope 210, the sensor module 207 includes a plurality of sensors, the plurality of sensors are real sensors, each sensor is connected with the airbag ECU209 to form a loop, and the sensors are used for testing whether the sensors have communication faults and electrical faults. Specifically, the plurality of sensors include a driver front impact sensor 2071, a driver side impact sensor 2072, a passenger front impact sensor 2073, a passenger side impact sensor 2074, a left side pressure sensor 2075 and a right side pressure sensor 2076, and the driver front impact sensor 2071, the driver side impact sensor 2072, the passenger front impact sensor 2073, the passenger side impact sensor 2074, the left side pressure sensor 2075 and the right side pressure sensor 2076 are connected to the airbag ECU209 respectively to form six circuits. The oscilloscope 210 is connected with the airbag ECU209 through a BNC line to form a loop, and the oscilloscope 210 is used for observing the waveform of an output signal of a collision hard line. In the embodiment, a real sensor is connected to a loop for testing, so as to test whether the sensor module 207 has a communication fault and an electrical fault, wherein each sensor continuously sends speed change or acceleration information to the airbag ECU209, the airbag ECU209 analyzes and judges the information, if the measured acceleration, speed change or other indexes exceed a preset value, a collision really occurs, and then the oscilloscope 210 is used for observing the waveform of an output signal of a collision hard line, so that the test operation is simple, the observation is easy, and the reliability of a test result is improved.
By adopting the air bag bench test system, the simulation environment requirement of the air bag control unit is met through the CAN message simulation script and the IG module, the load working condition of the safety belt module and the air bag module 205 of a vehicle is simulated through the resistor, the physical environment requirement of the air bag control unit is met through the real sensor, the fault related to the resistance value is tested through the sliding rheostat 211, the Panel operation Panel, the CANoe script module, the Trace interface and the Graphic interface are combined to complete the testing of the unbuckled reminding function of the safety belt, the short circuit and open circuit faults of an external loop are tested through short circuit or broken wire, the fault related to the voltage value is tested through the direct current stabilized power supply 206, the hard wire collision output function is tested through the oscilloscope 210, the structure is simple, the cost is low, the operation is simple, the function verification is comprehensive, compared with the HIL bench test, the time cost, the material cost and the labor cost are greatly reduced, the space is saved, and the test efficiency is improved.
For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition to the foregoing, it should be appreciated that reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An airbag bench test system, comprising:
the system comprises an upper computer system (1), a control unit and a control unit, wherein the upper computer system (1) is used for extracting simulation environment requirements and test requirements of the safety air bag control unit;
air bag test system (2), air bag test system (2) include multiunit resistance group, multiunit resistance group is used for the operating mode of the safety belt module of simulation vehicle and air bag module (205), wherein, air bag test system (2) through the CAN bus with host computer system (1) is connected.
2. The airbag bench test system of claim 1, wherein the airbag test system (2) comprises:
the safety airbag ECU (209) is connected with the resistor groups to form a loop, and the safety airbag ECU (209) is used for receiving collision signals and controlling the explosion of the safety airbag.
3. The airbag bench test system of claim 2, wherein the airbag test system (2) further comprises:
the sliding rheostat (211) is connected with the airbag ECU (209) to form a loop, the sliding rheostat (211) is connected with the multiple groups of resistor groups in series or in parallel, and the sliding rheostat (211) is used for testing whether each resistor in the multiple groups of resistor groups has a fault that the resistance value is too high or too low.
4. The airbag bench test system of claim 3, wherein the plurality of resistor sets comprises:
the safety belt device comprises a first resistor group, wherein the first resistor group is connected with an airbag ECU (209) to form a loop, the first resistor group is used for simulating the working condition of a left safety belt module (201) in the safety belt modules in a plurality of modes, the first resistor group comprises a first pre-tightening resistor (11) and a first buckle resistor (12), the first pre-tightening resistor (11) and the first buckle resistor (12) are arranged in parallel, the first pre-tightening resistor (11) is used for simulating the working condition of a left safety belt pre-tightening device (2011) in the left safety belt module (201), and the first buckle resistor (12) is used for simulating the working condition of a left safety belt buckle device (2012) in the left safety belt module (201).
5. The airbag rack test system of claim 3, wherein the plurality of sets of resistors comprises:
the second resistor group is connected with the airbag ECU (209) to form a loop, and is used for simulating the working condition of a right side safety belt module (202) in the safety belt modules, the second resistor group comprises a second pre-tightening resistor (14) and a second buckle resistor (13), the second pre-tightening resistor (14) and the second buckle resistor (13) are arranged in parallel, the second pre-tightening resistor (14) is used for simulating the working condition of a right side safety belt pre-tightening device (2021) in the right side safety belt module (202), and the second buckle resistor (13) is used for simulating the working condition of a right side safety belt buckle device (2022) in the right side safety belt module (202).
6. The airbag rack test system of claim 3, wherein the plurality of sets of resistors comprises:
a third resistor group connected with the airbag ECU (209) to form a loop, the third resistor group being configured to simulate a plurality of operating conditions of a driver seat belt module (203) in the seat belt module, the third resistor group including a third pre-tightening resistor (7) and a third buckle resistor (8), the third pre-tightening resistor (7) and the third buckle resistor (8) being arranged in parallel, the third pre-tightening resistor (7) being configured to simulate an operating condition of a driver seat belt pre-tightening device (2031) in the driver seat belt module (203), the third buckle resistor (8) being configured to simulate an operating condition of a driver seat belt buckle device (2032) in the driver seat belt module (203).
7. The airbag bench test system of claim 3, wherein the plurality of resistor sets comprises:
the fourth resistor group is connected with the airbag ECU (209) to form a loop, the fourth resistor group is used for simulating the working condition of a copilot safety belt module (204) in the plurality of safety belt modules, the fourth resistor group comprises a fourth pre-tightening resistor (10) and a fourth buckling resistor (9), the fourth pre-tightening resistor (10) and the fourth buckling resistor (9) are arranged in parallel, the fourth pre-tightening resistor (10) is used for simulating the working condition of a copilot safety belt pre-tightening device (2041) in the copilot safety belt module (204), and the fourth buckling resistor (9) is used for simulating the working condition of a copilot safety belt buckling device (2042) in the copilot safety belt module (204).
8. The airbag rack test system of claim 3, wherein the plurality of sets of resistors comprises:
a fifth resistor group connected with the airbag ECU (209) to form a loop, the fifth resistor group being used for simulating the working condition of the airbag module (205), the fifth resistor group including a first airbag resistor (15), a second airbag resistor (16), a third airbag resistor (3), a fourth airbag resistor (4), a fifth airbag resistor (5) and a sixth airbag resistor (6), the first airbag resistor (15), the second airbag resistor (16), the third airbag resistor (3), the fourth airbag resistor (4), the fifth airbag resistor (5) and the sixth airbag resistor (6) being arranged in parallel,
the first airbag resistor (15) is used for simulating the working condition of a driver front airbag device (2051) in the airbag module (205), the second airbag resistor (16) is used for simulating the working condition of a driver side airbag device (2052) in the airbag module (205), the third airbag resistor (3) is used for simulating the working condition of a driver front airbag device (2053) in the airbag module (205), the fourth airbag resistor (4) is used for simulating the working condition of a driver side airbag device (2054) in the airbag module (205), the fifth airbag resistor (5) is used for simulating the working condition of a left side airbag device (2055) in the airbag module (205), and the sixth airbag resistor (6) is used for simulating the working condition of a right side airbag device (2056) in the airbag module (205).
9. The airbag bench test system of claim 2, wherein the airbag test system (2) further comprises:
the direct-current stabilized power supply (206), the direct-current stabilized power supply (206) is connected with the airbag ECU (209) through a hard wire to form a loop;
the fault lamp (208), the fault lamp (208) is connected with the airbag ECU (209) through a hard wire to form a loop, and the fault lamp (208) is used for reminding system faults.
10. The airbag bench test system of claim 2, wherein the airbag test system (2) further comprises:
the sensor module (207) comprises a plurality of sensors, each sensor adopts a real sensor, each sensor is connected with the airbag ECU (209) to form a loop, and the sensors are used for testing whether the sensors have communication faults and electrical faults;
the oscilloscope (210) is connected with the airbag ECU (209) through a BNC line to form a loop, and the oscilloscope (210) is used for observing the waveform of an output signal of the crash hard wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310025660.4A CN115808917A (en) | 2023-01-09 | 2023-01-09 | Air bag rack test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310025660.4A CN115808917A (en) | 2023-01-09 | 2023-01-09 | Air bag rack test system |
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| CN202310025660.4A Pending CN115808917A (en) | 2023-01-09 | 2023-01-09 | Air bag rack test system |
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