KR0148412B1 - Auto-testing system and method for electronic control unit - Google Patents

Abstract

The present invention provides an automated control system and method for an electronic control system of an electronic control system that enables accurate testing by controlling each instrument with a computer when testing the electronic control device of the electronic control system, and shortens the test time. In the related art, when the manual test was performed by hand, it took about 2 hours for each test, and the measurement equipment was built and tested according to the problem of high error rate. There was a problem that another test equipment should be constructed when the control specification of the device was changed, and the present invention produced a simple GP-IB board and an internal board to solve the conventional problems by using a computer using conventional instruments. Input the desired input signal through serial / parallel communication with each other. By providing a system for judging the quality of the electronic control device by reading its output value, it is possible to respond quickly to specification changes as the test system can be easily reconfigured even if the type of electronic control device and each instrument changes. In addition, the cost of building a test system can be reduced.

Description

Automation test system and method for electronic control system of electronic control system

1 is an overall block diagram of the present invention.

2 is a flow chart illustrating the operation procedure of the present invention.

3 is a block diagram showing a first embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

100: computer 110: RS-232C

120: GP-IB board 130: internal board

131: D / A converter 132: timer

133: I / O port 200: power supply

300: pulse generator 400: external board

500: electronic control device 600: oscilloscope

700: external device

The present invention relates to an electronic control system (ECU) automated test system and method of the electronic control system (EMS), in particular, when testing the electronic control device of the designed electronic control system to control each instrument with a computer to perform an accurate test The present invention relates to an automated test system and method for an electronic control device of an electronic control system that can reduce test time.

In general, when testing the electronic control system of the electronic control system that controls the engine part of the vehicle, the test time was about 2 hours per unit because it was manually tested in the past, and the measurement error is caused by the human measurement Occurred and the error rate was high.

Therefore, in order to do this, there was a case that the test equipment was built and tested, but there was a problem in the construction of the test equipment due to the huge budget for the test equipment construction, as well as a large cost by the construction of another test equipment when the control specification of the electronic control device was changed. There was a problem that occurred.

An object of the present invention is to solve the above conventional problems, in particular, the GP-IB board and the INTERNAL board manufactured by using a computer to measure each other using a serial / parallel communication with each other using a computer Provides an automated control system and method for an electronic control system of an electronic control system that has the effect of accurately determining the quality of the electronic control device and reducing the test time by analyzing and reading the final output value output after inputting a desired input signal. It is.

In order to achieve the above object, the electronic control system automated test system of the electronic control system of the present invention, in the test system for testing the electronic control device of the electronic control system, RS received and transmitted through a computer input by the user -232C, GP-IB board for transmitting control signal of computer, and internal board connected to signal output terminal of RS-232C to control the signal input through RS-232C and then output the controlled signal A computer consisting of; A power supply for supplying battery power of the electronic controller to be tested by a control signal input through the GP-IB board of the computer; A pulse generator for generating and outputting a pulse for providing to an electronic controller to be tested by a control signal input through another terminal of the computer's GP-IB board; It is connected to the signal output terminal of the internal board, the power supply and the pulse generator, transmits and receives a signal value inputted through the internal board, the power supply and the pulse generator, and then outputs the final output value and emits light. An external board for displaying with a diode; An electronic controller connected to the external board and outputting an arbitrary final output value to the external board by using a signal input through the external board; And an oscilloscope connected to the signal output terminal of the external board, receiving the final output value output from the external board, displaying the waveform as a waveform, and outputting the final output value to a computer through the GP-IB board. Features of the jacket.

On the other hand, the electronic control system automated test system method of the electronic control system of the present invention, the first step (S1) for outputting the input signal desired by the user by controlling the internal board through the RS-232C using a computer Wow; A second step (S2) of controlling the power supply and the pulse generator through the GP-IB board to provide power and pulses and setting an environment of the oscilloscope after performing the first step (S1); After performing the second step S2, the external board receiving the input signal, the power, and the pulse transmits / receives mutual input values with the electronic control device, and outputs them by the final output values outputted from the electronic control device. Operating a light emitting diode and outputting the final output value to an oscilloscope (S3); After performing the third step S3, the oscilloscope receiving the final output value displays the waveform and outputs the final output value to the computer. The computer determines whether the final output value is the desired output value for the desired input value. A fourth step S4 of determining the quality of the control device and ending the test in the case of the genuine product; After performing the fourth step (S4), if the electronic control device is not genuine, it consists of a fifth step (S5) of re-adjusting the input signal and attempting the test again including the sequential operation. It is characterized by the configuration.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment according to the technical idea of the electronic control system automated test system and method of the electronic control system configured as described above are as follows.

As shown in FIG. 1, the RS-232C 110 transmits an input signal input by a user through the computer 100 to the internal board 130, and the GP-IB board 120 transmits the computer ( The control signal of 100 is transmitted to the power supply 200 and the pulse generator 300, and the internal board 130 receiving the input signal input by the user from the RS-232C 110 receives the input signal. The control signal is transmitted to the external board 400, the power supply 200 supplied with the control signal from the GP-IB board 120 supplies battery power, and the pulse generator 300 controls the control signal. Generates a pulse by the signal and outputs it to the external board 400 and receives the control signal from the internal board 130, the power supply 200, and the pulse generator 300 of the computer 100. In the board 400, input values to the electronic control device 500 to be tested The electronic control apparatus 500 receives an input value from the external board 400 and outputs an arbitrary output batter back to the external board 400 by using the input value. The external board 400 which receives the final output value from the device 500 displays the light emitting diode and supplies the final output value to the oscilloscope 600, and supplies the final output value from the external board 400. The received oscilloscope 600 outputs a final output value as a waveform, and supplies the final output value through the GP-IB board 120, and the RS-232C 110, the internal board 130, and the GP-IB board. The computer 100 having the built-in 120 is operated to analyze and determine the final output value supplied to the GP-IB board 120 to accurately determine the quality of the electronic control apparatus 500 and to shorten the test time. Example of this The.

In addition, the D / A converter 131 of the internal board 130 converts a digital signal input through the RS-232C 110 of the computer 100 into an analog signal, and then converts it into an external board 400. Various input analog signals (suction air pressure MAP (V), throttle position sensor TPS (V), coolant temperature signal WTS (V), etc.) are controlled, and the timer 132 uses an oscillator. Pulse division in the low frequency (VSP) region is controlled by count division, and logic signals (A / C, ELD, P / N, NIL, EST, PST) are output from the I / O port 133. This embodiment is configured to input to the board 400 and to control the input / output of the internal board 130 and the external board 400 and to control various relays of the external board 400.

Hereinafter, the operation of the present embodiment configured as described above will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, first, the electronic control device 500 to be tested is connected to the external board 400, and then the user inputs a desired input signal using the computer 100, and then RS-232C ( In 110, an input signal is transmitted to the internal board 130, and in the GP-IB board 120, a control signal is supplied from a processor (not shown) of the computer 100 to supply the power supply 200 and the pulse generator 300. To output the control signal.

In addition, the internal board 130 receiving the input signal input by the user through the RS-232C 110 controls the input signal and supplies a control signal to the external board 400. The power supply 200 receives the control signal supplied from the processor (not shown) through the IB board 120, and the battery power is supplied. The pulse generator 300 generates a pulse by the control signal to generate the external board 400. Supply the generated pulse with).

In addition, the external board 400, which receives the input values from the internal board 130, the power splice 200, and the pulse generator 300, supplies the signal values input to the electronic control apparatus 500 to be tested. The electronic control apparatus 500 that receives the input value from the external board 400 supplies the final output value for the input value to the external board 400.

In addition, the external board 400 supplied with the final output value from the electronic controller 500 displays the final output value using the light emitting diode and supplies the final output value to the oscilloscope 600. The oscilloscope 600 receives the final output value from the board 400 and displays the input final output value as a waveform and supplies the final output value to the computer 100 through the GP-IB board 120. The computer 100 that receives the final output value to the oscilloscope 600 through the IB board 120 determines whether the output value is a desired output value based on a desired input value to determine the quality of the electronic control apparatus 500.

In addition, the internal board 130 converts a digital signal input through the RS-232C 110 of the computer 100 into an analog signal, and various analog signals input to the external board 400 (suction air). D / A converter 131 for controlling pressure (MAP (V)), throttle position sensor (TPS (V)), cooling water temperature signal (WTS (V)), intake air temperature (ATS (V)), etc. The timer 132 for controlling the pulse signal in the low frequency (VSP) region by using the oscillator and the logic signals (A / C, ELD, P / N, NIL, EST, PST) Input to the external board 400, I / O port 133 for controlling the input / output of the internal board 130 and the external board 400 and various relays of the external board 400 It works.

Meanwhile, referring to the operation flowchart of FIG. 2, first, in the first step S1, the electronic control apparatus 500 to be tested is connected to the external board 400 and a value desired by the user using the computer 100 is provided. To control the input, and the internal board 130 is controlled through the RS-232C (110), the internal board 130 to the various kinds of external board 400 under the control of the D / A converter 131 An analog signal (suction air pressure (MAP (V)), throttle position sensor (TPS (V)), coolant temperature signal (WTS (V)), intake air temperature (ATS (V)), and the like are inputted. A pulse signal VSP is input under the control of 132, and various logic signals are input by the control of the I / O port 133.

In addition, in the second step S2, the power supply 200, the pulse generator 300, and the oscilloscope 600 are controlled through the GP-IB board 120, and the battery may be controlled according to the type of the electronic controller 500. Control the power supply 200 for supplying the power BAT (V) to input a voltage, and control the pulse generator 300 for generating a pulse to the engine board (RPM) frequency to the external board 400 And sets the environment of the oscilloscope 600 that inputs the final output value to the computer 100.

In addition, in the third step S3, when all the operations are completed as described above, the user inputs an input value desired by the user to the electronic controller 500 through the external board 400, and the electronic controller 500 inputs the input. The work corresponding to the value is performed and the final output value is output to the external board 400. The external board 400 receiving the final output value operates the corresponding LED and various relays, and simultaneously inputs the output value to the oscilloscope 600, and the oscilloscope 600 receives the final output value INJWID (ms). , DWLANG (deg), SPKADV (deg), ISCTIME (ms), F / PUMP, A / C RELAY, PURGE) displays the waveform to the computer 100. In addition, in the fourth step S4, the quality of the electronic control apparatus 500 is determined by determining whether the computer 100 receives the final output value as a desired output value with respect to a desired input value, and as a result of the determination, the electronic control apparatus 500. If the authenticity is genuine, the output value is printed and the test is terminated. If the authenticity is not genuine in the fifth step (S5), the input value is changed and the retry or the test is terminated.

The test process of the present invention carried out as described above is able to make accurate measurements because the value of the instruments are controlled by using a computer, and the conventional GP-IB board has a program source of unique basic code for each instrument. Since it is necessary to use the specifications for each measuring instrument, there is an inconvenience of having to purchase a new program when the measuring instrument is changed, and even the measuring instruments of the same company as well as other companies are incompatible, and the user could only do limited work at the same time with each purchase. Code is written in C's general-purpose C-language so that you can use any instrument in one module with just the instructions.

In other words, it is easy to reconfigure the test system even if the types of electronic control devices and instruments change.

In addition, the internal board 130 and the GP-IB board 120 of the present invention can be embedded in the computer 100, as well as designed as an external device 700 as shown in FIG. It can also be mounted outside of 100). That is, the internal board 130 which consists of the D / A converter 131, the timer 132, and the I / O port 133; A GP-IB board 120; Various relays and light emitting diodes are designed as one external device 700 to be connected to a computer 100, a power supply 200, a pulse generator 300, an oscilloscope 600, and an electronic controller 500. The test can be performed, and the operation is the same as described in FIG.

In addition, the test results using the present invention are shown in the following table.

'INJWID' mentioned in the above table is an output value representing the injection width, that is, the amount of fuel injected during the intake stroke, 'SPKADV' is an output value representing the ignition advance time, and 'DWLANG' is an output value representing the Duel angle controlled by software. , 'ISCTIM' is an output value indicating the amount of opening of the idle speed control valve at idle.

In addition, 'F / PUMP' is an output value indicating ON / OFF of the fuel pump, 'A / C RELAY' is an output value indicating ON / OFF of the air conditioning, and 'PURGE' is evaporated in the fuel pump. The output value indicates that the exhaust gas is collected and returned to the suction period.

In addition, RS-232C referred to in this section is an interface bus used to connect a data terminal device (DTE) to a voiced gold modem in a serial interface standard, and GP-IB is a bus type as a standard bus for connecting various measuring instruments. It is used.

As described above, the present invention, in particular, even if the type of electronic control device and each instrument is changed, it is possible to easily change the reconfiguration of the test system accordingly, it is possible to quickly cope with the specification change, the cost of building the test system There is an effect that can be saved.

Claims (3)

In the test system for testing the electronic control device of the electronic control system, RS-232C (110) for receiving and transmitting the input signal input by the user through the computer 100, and transmits the control signal of the computer 100 An internal board connected to a GP-IB board 120 and a signal output terminal of the RS-232C 110 to control a signal input through the RS-232C 110 and then output a controlled signal ( A computer 100 consisting of 130; A power supply 200 for supplying battery power of the electronic controller 500 to be tested by a control signal input through the GP-IB board 120 of the computer 100; A pulse generator 300 for generating and outputting a pulse for providing to the electronic control apparatus 500 to be tested by a control signal input through another terminal of the GP-IB board 120 of the computer 100; Signals connected to the signal output terminals of the internal board 130, the power supply 200, and the pulse generator 300, and are input through the internal board 130, the power supply 200, and the pulse generator 300. An external board 400 which transmits and receives a value to the electronic controller 500 to test the value, outputs a final output value and displays the light emitting diode; An electronic controller (500) connected to the external board (400) to output an arbitrary final output value to the external board (400) by using a signal input through the external board (400); It is connected to the signal output terminal of the external board 400, receives the final output value output from the external board 400 to display the waveform and the final output value to the computer 100 through the GP-IB board 120 Electronic control system automated test system of an electronic control system, characterized in that it comprises an oscilloscope 600 for outputting the. According to claim 1, The internal board 130 converts the digital signal input through the RS-232C (110) of the computer 100 to an analog signal, various analog signals input to the external board 400 A D / A converter 131 for controlling the control unit; A timer 132 for controlling the pulse signal in the low frequency region by count division using an oscillator; I / O port 133 for inputting a logic signal to the external board 400 and controlling the input / output of the internal board 130 and the external board 400 and various relays of the external board 400. Electronic control system automated test system of the electronic control system, characterized in that consisting of. A first step (S1) of controlling the internal board 130 through the RS-232C 110 using the computer 100 to output an input signal desired by the user to the external board 400; After performing the first step (S1), to control the power supply 200 and the pulse generator 300 through the GP-IB board 120 to provide power and pulse and to set the environment of the oscilloscope 600 A second step (S2); After performing the second step (S2), the external board 400 receiving the input signal, the power, and the pulse transmits / receives an input / output value with the electronic controller 500 in the electronic controller 500. A third step (S3) of operating the relay and the light emitting diode according to the outputted final output value and outputting the final output value to the oscilloscope 600; After performing the third step S3, the oscilloscope 600 receiving the final output value displays the waveform and outputs the final output value to the computer 100. The computer 100 then outputs the final output value. A fourth step (S4) of determining the quality of the electronic control apparatus 500 by determining whether the output value is a desired output value and ending the test in the case of a genuine product; After performing the fourth step (S4), when the electronic control device 500 is not genuine, the electronic control device comprises a fifth step (S5) for re-adjusting the input signal and attempting the test again. Automated test method of electronic control system of control system.