KR20060089290A - Air bag deployment logic simulation system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle simulation system, and more particularly, receives a collision condition and driver's state information, and develops a collision according to the collision condition and the driver's state information to test the input of the sensor and the operation of the airbag logic. Airbag deployment logic simulation system. The present invention provides an airbag deployment logic simulation system, comprising an airbag electronic control unit and receiving predetermined airbag condition information and virtual sensing data into the airbag electronic control unit, generating a collision with acceleration by a predetermined control, and A collision simulation unit for measuring acceleration during a collision and outputting an acceleration signal, generating and outputting the virtual sensing data and an airbag explosion control signal according to the acceleration, and receiving the acceleration signal and the airbag explosion control signal and receiving a predetermined control The electronic control load receiving virtual air and outputting virtual sensing data according to predetermined passenger state information and receiving the airbag explosion control signal to determine whether the airbag is blown out, and generating and outputting information on the blown airbags and acceleration information. Simulation unit and the collision simulation It generates a collision by controlling the transition unit, characterized in that consisting of a signal processing unit for receiving and storing the information on the blown airbags and the information on the acceleration.

Airbags, Collision Conditions, Passenger Status Information, Airbag Logic, Sensor Input, Test

Description

Airbag deployment logic simulation system {AIR BAG DEPLOYMENT LOGIC SIMULATION SYSTEM}             

1 is a view showing the configuration of the airbag deployment logic simulation system according to an embodiment of the present invention

2 is a view showing the configuration of the collision simulation unit of Figure 1 according to an embodiment of the present invention

3 is a flowchart illustrating an airbag deployment logic simulation method according to an exemplary embodiment of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle simulation system, and more particularly, receives a collision condition and driver's state information, and develops a collision according to the collision condition and a driver's state condition to test the input of a sensor and the operation of airbag logic. Airbag deployment logic simulation system.

In general, the vehicle is equipped with an airbag to protect the driver from the impact of a collision between the front part and the side part in the event of a vehicle crash. The airbag includes a sensor unit generating a collision signal when a collision of a predetermined size of the vehicle is detected, an electronic control unit (ECU) for receiving an impact signal from the sensor unit, and outputting an airbag explosion control signal; It consists of an air bag module (Air Module) that receives the explosion control signal and bursts the air bag. The airbag module is configured to receive an airbag and the airbag explosion control signal to cause an explosion to provide a nitrogen gas to the airbag to inflate the working gas expansion device.

In order to test the performance of the airbag, it must be mounted on a vehicle and subjected to a test by applying an impact to the vehicle. In this case, there was a problem that the cost for the test is increased.

In order to solve this problem, an airbag test apparatus for testing an airbag without a vehicle is developed and used.

As such a device, the notification number 10-0194360, `` Airbag Testing Device and Control Method thereof '' (hereinafter referred to as "pre-registration invention"), registered in advance on June 15, 1999 with the Korean Intellectual Property Office, was obtained by experiments. The collision is generated according to the collision data indicating a and the collision is measured again to drive the airbag, and when the airbag driving the airbag pressure and time is measured and stored. However, the driver's condition must be taken into account to test the airbag more accurately. Specifically, conditions such as the presence of a seat belt and a passenger seat occupant between the driver and the front front should be considered.

As described above, when testing by an actual differential vehicle for airbag testing, there is a problem in that the test vehicle cannot be reused, resulting in a large loss and a complicated test process. By using the Airvec test, there was a problem that the accuracy of the test was lowered and the test was not performed according to various conditions of the occupant.

In addition, there is a problem in that conventionally, the airbag is fired and the state of the blown airbag is tested, and the logic of the airbag electronic control unit cannot be tested.

Accordingly, an object of the present invention is to provide an airbag deployment logic simulation system for testing the operation of the sensor and the operation of the airbag logic by deploying a collision according to the collision condition and the driver condition condition.

The apparatus of the present invention for achieving the above object; An airbag deployment logic simulation system, comprising: an airbag electronic control unit, input airbag condition information and virtual sensing data to the airbag electronic control unit, generate a collision with acceleration according to a predetermined control, Measuring and outputting an acceleration signal, a collision simulation unit for generating and outputting the virtual sensing data and the airbag explosion control signal according to the acceleration, and receives the acceleration signal and the airbag explosion control signal, and receives a predetermined control An electronic control rod simulation unit configured to output virtual sensing data according to occupant state information, determine whether the airbag is blown out by receiving the airbag explosion control signal, and generate and output information on the blown airbags and information on acceleration; Under the control of the collision simulation unit And generating a collision, characterized by the information, and made of an signal processing unit for receiving and storing input information on the acceleration for said air bag burst.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be noted that in the following description, only parts necessary for understanding the operation according to the present invention will be described, and descriptions of other parts will be omitted so as not to deviate from the gist of the present invention.

1 is a view showing the configuration of an airbag deployment logic simulation system according to an embodiment of the present invention.

Referring to FIG. 1, the airbag deployment logic simulation system according to the present invention is a collision simulation with a signal processing unit 1 and an airbag electronic control unit (hereinafter referred to as “ECU”) rod simulation unit 30. It is comprised by the part 40.

The signal processor 1 controls the airbag ECU load simulation unit 30 and the collision simulation unit 40 and receives and stores the result according to the control. Specifically, the signal processor 1 receives and / or inputs airbag condition information and occupant state information by a test operator, and outputs the occupant state information to the airbag ECU load simulation unit 30, and the airbag condition. Outputs information to the collision simulation unit 40, outputs a collision control signal to the collision simulation unit 40, receives the result of the collision control signal from the airbag ECU load simulation unit 30 to store and display Give it. The occupant status information is information on the occupant, that is, the driver and the passenger seat occupant who are the subject of protection of the airbag burst. Information on occupant classification for children or children. Whether or not the occupant seat belt is worn can be determined through a seat belt sensor, and the distance between the front front of the vehicle is provided with a position sensor on the seat track to detect a position on the seat track of the vehicle seat. The occupant classification may be determined by a weight sensor of the seat or the like.

The airbag condition information is reference information used to determine the deployment of the airbag in comparison with the occupant status information at the time of collision.

In the present invention, a computer such as a personal computer or a notebook was used as the signal processor 1. Therefore, the computer must have an airbag deployment logic simulation program according to the present invention.

However, the occupant status information is not actually measured, but is selected or input by the test performer through the airbag deployment logic simulation program of the computer. Thus, by selecting and / or inputting occupant status information through a computer, a test can be performed under various conditions.

In order to use a computer as the signal processor 1, an interface unit 20 for transmitting and receiving a signal between the airbag electronic control unit load simulation unit 30 and the collision simulation unit 40 is provided. As the interface unit 20, an analog to digital converter (ADC) card, a general purpose input / output (GPIO) card, or the like may be used.

The airbag ECU load simulation unit 30 includes a power supply unit 31, a status check display unit 33, an airbag condition setting unit 35, an airbag explosion test unit 37, and an analog / digital converter (ADC-39). .

The power supply unit 31 receives power from a generation power source or a vehicle battery and converts the power supply into a system power supply and an airbag ECU power supply, and converts the airbag ECU power supply into the interface unit 20, the status check display unit 33, and an airbag condition setting unit 35. ) Is output to the airbag explosion test unit 37 and the ADC 39.

The state confirmation display unit 33 visually displays whether the system power and the airbag ECU power are input, whether a collision experiment is performed, and a warning lamp.

The airbag condition setting unit 35 receives the passenger state information from the signal processor 1 and outputs virtual sensing data corresponding to the actual sensing data according to the actual passenger state information to the collision simulation unit 40. For example, the sensing data may be occupant position data corresponding to data detected by a position sensor of a seat on the seat track, weight data for occupant classification, and the like.

The airbag explosion test unit 37 includes resistors corresponding to a plurality of airbags, and receives an airbag explosion control signal corresponding to each of the resistors from the collision simulation unit 40, and according to the airbag explosion control signal. The current flows through the resistor, and the current value flowing through the resistor is measured and output to the ADC 39.

The ADC 39 converts a current value input from the airbag explosion test unit 37 and a reference acceleration signal input from the collision simulation unit 40 into airbag burst data and reference acceleration data in a digital form, thereby converting the interface unit. Output to the computer 10 through the (20).

The collision simulation unit 40 includes an airbag ECU and a collision sensor as a collision simulation jig, which includes a fixed member and a collision object, and moves the fixed member with acceleration under the control of the signal processor 1 to the collision object. Collision, and measure the acceleration of the movement of the fixing member during the collision and outputs to the airbag ECU load simulation unit 30. When the collision occurs, the airbag ECU determines whether an airbag burst condition is satisfied based on a sensor input to the collision sensor and the occupant state information, and generates an airbag explosion control signal for the airbag when the airbag burst condition is satisfied. Output to the airbag explosion test unit 37.

The collision simulation unit 40 will be described in detail with reference to FIG. 2 below. 2 is a view showing the configuration of the collision simulation unit of FIG. 1 according to an embodiment of the present invention.

Reference numeral 41 in the drawings denotes a collision part, 45 denotes an airbag ECU, 47 denotes a collision sensor, and 43 denotes a fixing member which integrates and fixes the airbag ECU 45 and the collision sensor 47.

The airbag ECU 45 stores the virtual sensing data and the airbag burst condition from the airbag condition setting unit 35 and compares the virtual sensing data with the airbag burst condition when a collision signal is input from the collision sensor 47. When the burst condition is satisfied, an airbag explosion control signal for the corresponding airbag is generated and output to the airbag explosion test unit 37.

The impingement part 41 includes a plate 41d and a plate (41d) to which the fixing member 43 is fixedly connected to the front, and moves back and forth under a predetermined control to impact the fixing member 43 on the collision object. Under the control of the two position sensors 41a and 41b and the signal processor 10 measuring the position of the signal 41d and outputting the signal to the signal processor 10, the plate 41d is accelerated by the control. The plate is composed of a moving member 41c for moving back and forth and an acceleration measuring sensor 49 for measuring substantial acceleration of the plate.

3 is a flowchart illustrating an airbag deployment logic simulation method according to an exemplary embodiment of the present invention. Hereinafter, an airbag deployment logic simulation method according to the present invention will be described with reference to FIGS. 1 to 3.

First, power is supplied to each of the components of FIG. 1 from the power supply unit 31 in step 301. When the power is supplied, the computer 10 detects that the power is being supplied through the interface unit 20 and informs the test performer.

When power is supplied in step 301, the computer 10 may input airbag condition information for generating an airbag explosion control signal by comparing with the virtual sensing data when an airbag burst condition setting command is input by a test operator in step 303. Outputs to the airbag ECU 45 of the collision simulation unit 40 through 20). The airbag ECU 45 receives and stores the airbag condition information.

In operation 305, the computer 10 selects and / or inputs passenger state information by the test operator and outputs the passenger state information to the airbag condition setting unit 35 through the interface unit 20. Then, the airbag condition setting unit 35 sets the virtual sensing data to generate and output the virtual sensing data according to the occupant state information.

When the load of the airbag condition information to the airbag ECU 45 and the setting of the virtual sensing data are completed, the computer 10 performs the plate 41d through the position sensors 41a and 41b of the collision simulation unit 40 in step 307. ) Is located and is moved to an initial position when it is in the advanced state, and outputs a collision control signal to the moving member 41c of the collision unit 41 of the collision simulation unit 40. The collision control signal includes the acceleration control information of the plate 41d. Then, the moving member 41c moves the plate 41d forward with the acceleration of the collision control signal to collide with the collision object in front. Along with the collision, the collision sensor 47 generates a collision signal and outputs the collision signal to the airbag ECU 45 when the collision is more than a predetermined size. At this time, the airbag ECU 45 receives the collision signal and compares the virtual sensing data inputted from the airbag condition setting unit 35 with the prestored airbag condition information to determine whether the airbag burst condition is satisfied, and determines a burst airbag. When the airbag burst condition is satisfied, the airbag explosion control signals for each of the airbag explosion airbags are output to the airbag explosion test unit 37. Then, the airbag explosion test unit 37 receives the airbag explosion control signals, flows an explosion current through the corresponding resistance, measures the current value, and outputs the current to the ADC 39. Then, the ADC 39 converts the current value in the analog form into current data in the digital form and outputs it to the computer 10 through the interface unit 20.

In addition, the plate acceleration sensor 49 measures the acceleration of the plate and outputs an acceleration signal to the ADC 39.

After the step 307, the computer 10 receives the current data from the ADC 139 in step 309 and determines which air bag is normally opened, and in step 311 generates the air bag condition information, virtual sensing data and air bag burst information. The measurement results are displayed on a monitor or printed out through a printer.

The present invention as described above has the advantage that a more accurate test can be performed by testing the logic of the airbag electronic control unit using occupant status information.

In addition, since the occupant status information and the airbag condition, that is, the airbag burst condition can be set through a computer, there is an advantage that the test operator can easily and quickly perform the test under various test conditions.

Claims (7)

In the airbag deployment logic simulation system, An airbag electronic control unit and input airbag condition information and virtual sensing data to the airbag electronic control unit, generate a collision with acceleration according to a predetermined control, output an acceleration signal by measuring acceleration in the collision; A collision simulation unit configured to generate and output an airbag explosion control signal according to the virtual sensing data and acceleration; The controller receives the acceleration signal and the airbag explosion control signal, outputs virtual sensing data according to predetermined passenger state information under predetermined control, determines whether the airbag is blown out by receiving the airbag explosion control signal, and sends the airbag to the blown airbags. An electronic control rod simulation unit for generating and outputting information about the acceleration information and the acceleration information; And a signal processor configured to generate a collision by controlling the collision simulation unit and to receive and store information about the blown airbags and information about the acceleration. The method of claim 1, Airbag deployment logic simulation system, characterized in that the user state information is information on whether the seat belt. The method of claim 1, And the user state information is position information of a seat track. The method of claim 1, Airbag deployment logic simulation system, characterized in that the user status information is the passenger occupant presence information. The method of claim 1, And the user state information is information according to the passenger seat occupant classification. The electronic control rod simulation unit, An airbag condition setting unit receiving the occupant state information under the control of the signal processor and outputting virtual sensing data according to the occupant state information to the collision simulation unit; An airbag explosion test unit configured to receive the airbag explosion control signal and output an airbag burst signal according to whether an airbag bursts; And an analog / digital converter converting the airbag burst signal into digital airbag burst data and converting the acceleration signal into digital acceleration data and outputting the converted signal to the signal processor. The method of claim 1, The collision simulation unit, A collision sensor for detecting a collision and generating a collision signal; The airbag condition information is received and stored, and when the collision signal is input, the virtual sensing data is received and compared with the airbag condition information to determine whether an airbag burst condition is satisfied.If the condition is satisfied, an airbag explosion control signal is generated to generate the airbag electronics. An airbag electronic control unit outputting to the control unit load simulation unit, A fixing member for integrating the airbag electronic control unit and the collision sensor; A plate fixedly connected to the fixing member at the front and moving back and forth with a predetermined acceleration under the control of the signal processor; A moving member for moving the plate back and forth; And an acceleration sensor detecting the actual acceleration of the plate and outputting the actual acceleration to the airbag electronic control unit load simulation unit.

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