KR100634911B1 - Test method and test system for control device - Google Patents

Abstract

The present invention discloses a test method and test system of a control device. The method includes a communication port to which a communication line is connected, an input port to which a plurality of input signal lines are connected, and an output port to which a plurality of output signal lines are connected. Version checking step for checking, Input port test step for testing the input port by transmitting the status information of the input port to the communication line in response to the input test message applied to the control device and the plurality of input signal lines sequentially converted state And an output port test step of sequentially converting states of the plurality of output signal lines in response to an output test message applied once to the control device, and testing the output port by transmitting state information of the output port to the communication line. It is characterized by. Thus, only hardware configurations can be tested, thus reducing test time.

Description

Test method and test system for control device

1 is a block diagram showing a general configuration of a test system for testing a control device.

2 is a view for explaining a test method of a conventional control device.

3 is a view for explaining a test method of the control device of the present invention.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test method of a control device, and more particularly, to a test of a control device having a communication port to which a communication line is connected, an input port to which a plurality of input signal lines are connected, and an output port to which a plurality of output signal lines are connected. It is about a method.

In order to control the devices to be controlled by the control device, a lot of wiring is required between the input unit and the control devices and between the devices to be controlled and the control devices. In the case where the devices to be controlled are distributed in several places, the wiring becomes more necessary, and the wiring becomes complicated. In order to solve this problem, a distributed control method including a plurality of control devices and connecting the plurality of control devices by a communication line to control the entire system is used.

For example, automobiles are equipped with many electronic devices (eg, power windows, various lamps, etc.) and control devices for controlling these electronic devices for the convenience of driving and safe driving. In recent years, as these electronic devices increase, wiring for connecting the control module and the electronic devices increases and becomes more complicated. To solve this problem, control modules use a communication line (CAN) to share information with each other. That is, when an input signal is input, the control module drives electronic devices in response to the input signal, and at the same time, reduces the amount of wiring required by transmitting information on the input signal to another control module through a communication line (CAN), The wiring can be simplified.

FIG. 1 is a block diagram showing a general configuration for testing a control device, and is composed of test equipment 10 and a control device 20 to be tested. In Fig. 1, P denotes a power line, CAN denotes a communication line, and IN1, IN2,... , INn indicates input signal lines, OUT1, OUT2,... And OUTn represent output signal lines, respectively. In addition, IP of the control device 20 is connected to the input port connected to the input signal lines (IN1, IN2, ..., INn), OP is connected to the output signal lines (OUT1, OUT2, ..., OUTn) CP indicates an output port, and a communication port connected to the communication line (CAN), respectively.

In the normal operation of the control device 20 shown in FIG. 1, the input signal lines IN1, IN2,..., And INn are connected to various switches or sensors, and the output signal lines OUT1, OUT2,. , OUTn is connected to the electronic devices to be operated, the communication line (CAN) is connected to the other control modules, the input signal and communication input through the input signal lines (IN1, IN2, ..., INn) And outputs driving signals for controlling the electronic devices through the output signal lines OUT1, OUT2,..., And OUTn in response to a communication signal input through a line CAN, and further, the input signal line IN1. In response to an input signal input through IN2, ..., INn, a communication signal is output through the communication line CAN.

The function of each of the blocks shown in FIG. 1 is as follows.

The test equipment 10 supplies power to the control device 20 through the power line P, and through the communication line CAN and / or the input signal lines IN1, IN2, ..., INn according to the stored program. Test by outputting signals for testing the control device 20 and again checking the signals output from the control device 20 via the communication line CAN and / or the output signal lines OUT1, OUT2,..., OUTn Perform

The control device 20 outputs the output signal lines OUT1, OUT2, ..., OUTn and / or in response to the signals input through the communication line CAN and / or the input signal lines IN1, IN2, ..., INn. Alternatively, various signals are output through the communication line CAN.

FIG. 2 is a diagram for describing a test method of a conventional control device. Referring to FIG. 2, the test method of the conventional control device will be described below.

The control device 20 operates in the normal mode once power is supplied from the test equipment 10.

In this state, first, the test equipment 10 transmits a test start signal through a communication line CAN (100).

When the control device 20 receives the test signal, the control device 20 switches from the normal mode to the test mode (110). Next, the return test start signal is transmitted to the test equipment through the communication line CAN (120).

The test equipment 10 receives input signal lines IN1, IN2,..., INn for testing the control device 20 upon receiving the return test start signal, that is, for the control device 20 to perform any function. And outputs an input signal and / or a communication signal through the communication line CAN (130).

The control device 20 performs a function corresponding to the input signal and / or the communication signal input in response to the input signal and / or the communication signal (140). When the function is performed, an output signal and / or a communication signal are output through the output port OP and / or the communication port CP (150). That is, as described above, the control device 20 outputs an output signal for operating the electronic devices in response to the input signal and / or the communication signal. It also outputs a communication signal in response to the input signal.

The test equipment 10 tests the control device 20 by confirming the output signal and the communication signal output from the control device 20 (160). The test ends when all the functions of the control device 20 are confirmed. That is, the control apparatus 20 is tested by determining whether the test equipment 10 outputs an appropriate communication signal and / or an output signal according to the input signal and / or the communication signal.

In other words, the test method of the conventional control device 20 determines what function the control device 20 performs, and whether the control device 20 outputs a communication signal and / or an output signal suitable for performing the function. The control device 20 is tested by the determination.

However, when the test as described above has a disadvantage that the test takes a lot of time.

That is, it is generally software implemented to cause the control device 20 to output an output signal and / or a communication signal in response to the input signal and / or the communication signal. However, when the test as described above, the communication line (CAN), the input signal lines (IN1, IN2, ..., INn) and the output signal line (OUT1) implemented by the software (hardware) and hardware (hardware) , OUT2, ..., OUTn) are tested simultaneously, which takes a lot of test time. In other words, although the software generally performs the test in different ways in other test processes, the above-described conventional test method results in testing the software again as a result of testing the hardware, which takes a lot of test time.

In addition, by allowing the control device 20 to perform various functions, the communication line (CAN), the input signal lines (IN1, IN2, ..., INn), and the output signal line (OUT1) implemented in hardware as a result. , OUT2, ..., OUTn) are duplicated and tested. In other words, all or part of the communication line CAN, the input signal lines IN1, IN2,..., And INn, and the output signal lines OUT1, OUT2,. This signal line is then tested more than once, which results in a lot of test time.

It is an object of the present invention to provide a test method of a control device that can reduce the test time.

Another object of the present invention is to provide a test system of a control device for achieving the above object.

The control method of the control apparatus of the present invention for achieving the above object is a control device having a communication port to which the communication line is connected, an input port to which the plurality of input signal lines are connected, and an output port to which the plurality of output signal lines are connected. In the test method of the step, the version of the step of confirming the software version of the control device, the input test message applied to the control device and the status information of the input port in response to the plurality of input signal lines are sequentially converted status communication line An input port test step of testing the input port by transmitting a signal to the controller, and sequentially converting the states of the plurality of output signal lines in response to an output test message applied to the control device, and transmitting status information of the output port to the communication line. Output port test step to test the output port It characterized in that it comprises.

The input port test step of the test method of the control device of the present invention for achieving the above object is an input test message transmission step of transmitting an input test message to the control device via a communication line, the control device returns an input test message, a plurality An input port driving step of sequentially driving two input signal lines and reading a state of the input port and transmitting input port state information about the state; and input port state information and states of the plurality of input signal lines And an input port checking step of checking whether there is a match, and repeating the input port driving step and the input port checking step until all the plurality of input signal lines have been tested.

The output port test step of the test method of the control apparatus of the present invention for achieving the above object transmits an output test message to the control apparatus via a communication line, and the control apparatus sends an output test message to return the output test message, control An output port driving step in which a device sequentially drives a plurality of output signal lines through an output port, transmits output port status information on the status of the output port, and the status of the plurality of output signal lines coincides with the output port status information. And an output port confirming step of repeating the output port driving step and the output port checking step until all of the plurality of output signal lines have been tested.

The test system of the control apparatus of the present invention for achieving the above another object is a control having a communication port to which a communication line is connected, an input port to which a plurality of input signal lines are connected, and an output port to which a plurality of output signal lines are connected. A device, and test equipment connected to the communication line, the plurality of input signal lines, and the plurality of output signal lines, the test equipment outputting a version confirmation message via the communication line to confirm the software version of the control device, Outputting an input test message to test an input port of a control device, and outputting an output test message to test an output port of the control device, wherein the control device sends a return input test message in response to the input test message. Transmits the signal through a plurality of input signal lines Reads the state of the input port until the test, and transmits the input port state information about the state through the communication line, and transmits a return output test message through the communication line in response to the output test message, And sequentially changing the state of the output port until all the output signal lines have been tested, and transmitting output port state information about the state of the output port through the communication line.

The control device of the test system of the control device of the control device of the present invention for achieving the another object is characterized in that it has a function of transmitting a software version to the test equipment via the communication line in response to the version confirmation message.

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When the return input test message is input, the test equipment of the test system of the control apparatus of the present invention for achieving the above another object sequentially processes the states of the plurality of input signal lines until all of the plurality of input signal lines are tested. And inputting the input port of the control device by checking whether the state of the plurality of input signal lines coincides with the input port state information.

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The test equipment of the test system of the control device of the control device of the present invention for achieving the another object is that the output port state information and the plurality of outputs until the return output test message is tested until all of the plurality of output signal lines are tested. And a function of testing the output port of the control device by checking whether the states of the signal lines coincide.

Hereinafter, a test method and a test system of a control device of the present invention will be described with reference to the accompanying drawings.

3 is a view for explaining a test method of the control device of the present invention, the test method of the control device of the present invention with reference to FIG.

The control device 20 operates in the normal mode once power is supplied from the test equipment 10.

In this state, first, the test equipment 10 transmits a test start signal through the communication line CAN (200).

When the control device 20 receives the test signal, the control device 20 switches from the normal mode to the test mode (210). Next, in operation 220, the return test start signal is transmitted to the test equipment 10 through the communication line CAN.

When receiving the return test start signal, the test equipment 10 transmits a version confirmation message to the control device 20 through the communication line CAN (230).

The control device 20 transmits the software version to the test equipment 10 via the communication line CAN in response to the version confirmation message (240).

The test rig 10 verifies 250 that the software version is correct.

Next, the test equipment 10 checks the software version to terminate the test if the version is incorrect, and transmits an input test message if the version is correct (260).

The control device 20 transmits a return input test message to the test equipment 10 through the communication line CAN in response to the input test message (270).

The test equipment 10 converts the state of the input signal lines IN1, IN2,..., INn upon receiving the return input test message (280). The control device 20 reads the state of the input signal lines IN1, IN2,..., INn, that is, the state of the input port IP (290).

Next, the control device 20 transmits the information on the state of the input signal lines IN1, IN2,..., And INn (that is, the input port state information) to the test equipment 10 through the communication line CAN. Transmit (300).

The test equipment 10 checks whether the input port state information transmitted through the communication line CAN matches the state of the input signal lines IN1, IN2,..., INn converted by the test equipment 10 ( 310). At this time, if the state of the input signal lines IN1, IN2, ..., INn and the input port state information match, the state of the input signal lines IN1, IN2, ..., INn is converted again (280). However, if there is a mismatch, the controller waits for a predetermined time (for example, 1 second) until the corresponding input port state information is input, but passes the input signal lines IN1, IN2, ..., INn so that the predetermined time passes. If no input port status information matching the status is entered, the test is terminated.

The process of 280 to 310 is repeated until all the input signal lines IN1, IN2,..., INn are all tested.

For example, the test equipment 10 first outputs a high level signal to the first input signal line IN1, a low level signal to the remaining signal lines IN2,..., INn, and the communication line CAN. The input port state information on the states of the input signal lines IN1, IN2,..., And INn inputted through the input signal lines IN1, IN2,. If there is a match, a high level signal is output to the second input signal line IN2 and checked again. This process is repeated up to the nth input signal line INn.

After testing the input signal lines IN1, IN2,..., INn, the test equipment 10 transmits an output test message to the control device 20 through the communication line CAN (320).

The control device 20 transmits a return output test message to the test equipment 10 through the communication line CAN in response to the output test message (330).

Next, the control device 20 converts the states of the output signal lines OUT1, OUT2,..., And OUTn (340).

Next, the control device 20 transmits the information (that is, the output port state information) on the state of the output signal lines OUT1, OUT2,..., And OUTn to the test equipment 10 through the communication line CAN. Transmit 350.

The test equipment 10 checks whether the output port state information and the state of the output signal lines OUT1, OUT2,..., And OUTn coincide (360). At this time, if the state of the output port state information and the output signal lines OUT1, OUT2, ..., OUTn match, the test is continued. However, if it does not match, i.e., if no matching output port state information is input for a predetermined time (e.g., one second), the test ends.

The processes 340 to 360 are repeated until all output signal lines OUT1, OUT2,..., OUTn are tested.

For example, first, the control device 20 outputs a high level signal to the first output signal line OUT1 and a low level signal to the remaining output signal lines OUT2,. The status information is transmitted to the test equipment 10 through a communication line. The test equipment 10 checks whether the state of the output signal lines OUT1, OUT2, ..., OUTn matches the output port state information. After a predetermined time (for example, one second), the control device 20 transmits a high level signal through the second output signal line OUT2, and transmits output port state information about it to the test equipment 10. The test equipment 10 again checks whether the states of the output signal lines OUT1, OUT2,..., And OUTn coincide with the output port state information. This process is repeated until the nth output signal line OUTn is tested. If the output port state information corresponding to the state of the output signal lines OUT1, OUT2,..., And OUTn is not input for a predetermined time, the test equipment 10 ends the test.

Testing the output signal lines OUT1, OUT2, ..., OUTn ends the test.

The test equipment 10 periodically transmits a predetermined test code through the communication line CAN (for example, every 10 ms) during the test, and does not output the test code when the test ends. Therefore, if the test code is not transmitted for a predetermined time or more (for example, 10 ms or more), the control device 20 ends the test mode and switches to the normal mode.

That is, the test method of the control device of the present invention excludes software of the control device, and includes hardware components, that is, a communication line (CAN), input signal lines (IN1, IN2, ..., INn), and an output signal. By testing only the lines OUT1, OUT2,..., And OUTn, the time required for the test can be reduced.

The test method and test system of the control device of the present invention can be applied to the test of other control devices having a communication port, an input port, and an output port, in addition to the control devices of the car controlling the electronic device of the car.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention as set forth in the claims below. It will be appreciated.

Therefore, the test method and the test system of the control apparatus of the present invention can test only the hardware configurations, thereby reducing the test time.

Claims (9)

A test method of a control apparatus having a communication port to which a communication line is connected, an input port to which a plurality of input signal lines are connected, and an output port to which a plurality of output signal lines are connected, A version checking step of checking a software version of the control device; An input port test step of testing the input port by transmitting state information of the input port to a communication line in response to an input test message applied to the control device and a plurality of input signal lines sequentially changed in state; And And an output port test step of sequentially converting states of a plurality of output signal lines in response to an output test message applied to the control device and testing the output port by transmitting state information of the output port to a communication line. The test method of the control apparatus characterized by the above-mentioned. The method of claim 1, wherein the input port test step Transmitting an input test message to the control device via the communication line, wherein the control device returns an input test message; An input port driving step of sequentially driving the plurality of input signal lines, and reading the state of the input port by the control device and transmitting input port state information about the state; And An input port checking step of checking whether the input port state information and the states of the plurality of input signal lines coincide with each other; And repeating the input port driving step and the input port checking step until all of the plurality of input signal lines have been tested. The method of claim 2, wherein the output port test step Transmitting an output test message to the control device through the communication line, wherein the control device returns an output test message; An output port driving step of the control device sequentially driving the plurality of output signal lines through the output port, and transmitting output port state information about a state of the output port; And An output port checking step of checking whether the state of the plurality of output signal lines and the output port state information are identical; And repeating the output port driving step and the output port checking step until all of the plurality of output signal lines have been tested. A control device having a communication port to which a communication line is connected, an input port to which a plurality of input signal lines are connected, and an output port to which a plurality of output signal lines are connected; And Test equipment connected to the communication line, the plurality of input signal lines, and the plurality of output signal lines, The test equipment outputs a version confirmation message through the communication line to confirm a software version of the control device, outputs an input test message to test an input port of the control device, and outputs an output test message to the control device. Has the ability to test the output port of the The control device transmits a return input test message through the communication line in response to the input test message, and then reads the state of the input port until all of the plurality of input signal lines are tested. Transmitting status information through the communication line, transmitting a return output test message through the communication line in response to the output test message, and then outputting the test signal until all of the plurality of output signal lines have been tested. And changing the state of the port in sequence, and transmitting output port state information on the state of the output port through the communication line. The method of claim 4, wherein the control device And transmitting a software version to the test equipment through the communication line in response to the version confirmation message. delete The method of claim 4, wherein the test equipment When the return input test message is input, the states of the plurality of input signal lines are sequentially changed until all of the plurality of input signal lines are tested, and the states of the plurality of input signal lines coincide with the input port state information. And testing the input port of the control device by checking whether or not it is. delete The method of claim 4, wherein the test equipment When the return output test message is input, the output port of the control device is tested by checking whether the output port state information and the state of the plurality of output signal lines coincide until all of the plurality of output signal lines are tested. The test system of a control apparatus characterized by the above-mentioned.

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