JP2010190851A - Test system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a test system that makes testing automatically only measurement items where a plurality of component parts used for each measurement item uses only component parts normally connected with a controller controlling those operations. <P>SOLUTION: Prior to performing test of a plurality of measurement items, whether each of component parts (instruments 4-n, a switcher 5, a controller 6 for test devices to be tested, a monitor 7, and a printer 8) are normally connected with a controller 3 is tested and determined automatically with the controller 3, and if measurement items employ the component parts without normal connection with the controller 3, the test thereof is skipped, while if measurement items employ only the component parts with normal connection with the controller 3, the test thereof is implemented automatically. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a test system, and more particularly, to a test system that determines a measurement item based on a connection state of a plurality of components including measuring devices that constitute the test system, or a test system that can display measurement items that cannot be measured. .

  2. Description of the Related Art A test system is known in which an operation of a measuring instrument that is a component of a test system is controlled by a controller according to a test procedure, and an output signal of a device under test that is a test target is measured (for example, see Patent Document 1).

JP 2007-292723 A

  As the number of test objects and test items increases, the number of test system components also increases. When trying to execute a certain test item, it is a matter of course that a component necessary for the test item needs to be connected to a controller that controls the operation of the component. Therefore, it is effective to check the connection state of each component before the test in order to prevent a normal device under test from being erroneously determined to be abnormal due to a connection failure of the component. In addition, after confirming an unconnected component that is not properly connected (including when it is broken), the test of the measurement item that uses the unconnected component is canceled, and the unconnected component It is necessary to select only the measurement items that do not use the test. However, since the selection of the measurement item that does not use the unconnected component is performed based on the judgment of the operator (operator), the selection work is complicated, and there is a problem that the judgment error of the operator is likely to occur. there were.

  The object of the present invention is to solve the above-mentioned problems, and can automatically perform measurement of a measurement item that does not use a component that is not normally connected or is not normally connected. The operator can easily check the measurement items that use the components in the state, or the operator can easily select the measurement items that use only the components in the connected state that are normally connected. It is to provide a test system.

In order to solve the above-described problem, in the first invention of the present application, a test system is configured as follows. That is,
A plurality of components including a measuring instrument for measuring an output signal of the device under test; a controller connected to the component to control the operation of the component; a component connected to the component and the device under test; And a switching unit that switches a signal connection path between the device under test and
The controller includes a question transmission unit that transmits a question signal to a component;
A response receiver for receiving a response signal transmitted from the component in response to the interrogation signal;
A connection state determination unit that determines whether the component is normally connected to the controller based on the response signal;
A storage unit for storing a plurality of measurement items, a measuring device used for each measurement item, and a measurement order of the measurement items;
Measurement that is used for each measurement item based on the storage contents of the storage unit while controlling the question transmission unit, the response reception unit, and the connection state determination unit, and measuring each measurement item according to the measurement order stored in the storage unit A main control unit for transmitting a switching signal for switching the device to the switching unit,
After the main control unit transmits a question signal for a component from the question transmission unit, the response signal from the component is received by the response reception unit, and the component is in a normal connection state by the connection state determination unit If it is determined that the measurement item is not in the normal connection state, the measurement item using the component determined to be not in the normal connection state is skipped, and the next measurement item is automatically set according to the measurement order of the measurement item stored in the storage unit. A test system characterized by performing measurements.

  According to the test system of the first invention of the present application, it is possible to automatically select a measurement item that does not use an unconnected component that is not normally connected, and perform measurement.

In the test system according to the second invention of the present application, the test system according to the first invention further includes a display unit, and the main control unit uses a component that is determined not to be in a normal connection state. Regarding the measurement item, the display unit is configured to display that measurement is not possible.
With this configuration, in the test system according to the second invention of the present application, the operator can easily confirm the measurement items using the component that is not in a normal connection state, or the component in a normal connection state The operator can easily select the measurement item using the.

In the test system according to the third invention of the present application, the test system according to the first and second inventions further includes a display unit for displaying a connection state between the component and the controller, And a display signal output unit for outputting a display signal so that a component in a normal connection state and a component in a normal connection state can be identified based on the determination result of the connection state determination unit, The main control unit is configured to cause the display unit to display such that a component in a normal connection state and a component in a normal connection state can be identified.
With this configuration, in the test system according to the third invention of the present application, an operator can easily confirm a component in a normal connection state or a component in a normal connection state.

It is a figure which shows the structural example of the test system which concerns on this invention. It is a figure which shows the structural example of the functional block of the controller which concerns on this invention. It is a figure which shows the structural example of a use measuring device table. It is a figure which shows the example of a connection confirmation screen displayed on the monitor shown in FIG. It is a flowchart which shows the example of a process of the connection confirmation of each component performed by the controller shown in FIG. 1, and its result. 1 is a connection confirmation target component table (reference file) describing whether each component shown in FIG. 1 is a connection confirmation target or not. It is a figure which shows the example of a function and performance test screen. It is a figure which shows the example of a connection confirmation screen which displayed the result of the connection confirmation.

Embodiments of a test system according to the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration example of a test system according to the present invention. In FIG. 1, reference numeral 1 represents a test system. The test system 1 automatically tests a device under test (electronic device to be tested) 2 such as a wireless device in a predetermined order with respect to predetermined measurement items, and obtains measured values obtained by the test. Based on the above, it is determined whether or not the operation of the device under test 2 is normal.

  In the present embodiment, the test system 1 includes a controller (computer) 3 that performs control of the entire system, determination of pass / fail of measurement values and measurement results, and a plurality of output signals that are output from the device under test 2. A measuring device 4-n (n is a natural number) and a switching device 5 for switching a measurement path (signal connection path) between the device under test 2 and the measuring device 4-n based on a switching signal from the controller 3; A controller under test (computer) 6 for setting measurement conditions and the like for the device under test 2 in accordance with instructions from the controller 3, and a monitor (display unit) 7 for displaying the connection state between the components and the controller, etc. A printer 8 for printing the display contents of the monitor and an input device 9 such as a mouse are provided.

The measuring device 4-n is a general-purpose measuring device that is widely used regardless of the type of device under test, such as a reference signal generator that generates a reference signal or a phase detector that detects the phase of a signal, or a specific device under test. Dedicated measuring instruments used only for the measuring instrument are included, and the number thereof is, for example, several tens. In this embodiment, devices constituting the test system 1 such as the measuring device 4-n, the switching device 5, the monitor 7, and the printer 8 are collectively referred to as “components”. Each component is connected to the controller 3 via a network such as a LAN.
The controller under test 6 can also be incorporated into the controller 3 and integrated. Also, the controller under test 6 may not necessarily be required depending on the device under test 2.

In the present embodiment, the controller 3 includes a CPU (Central Processing Unit) 301 and a memory 302 as a hardware configuration.
The memory 302 stores a test program in which a test procedure of the device under test 2 is described. The test program receives a question transmission program for transmitting a question signal for checking whether the component and the controller are normally connected to the component, and receives a response signal returned from the component in response to the question signal. Response reception program, connection status judgment program that judges whether or not a component is normally connected to the controller according to the status and content of the response signal, and extracts measurement items that use a component that is not properly connected, Non-measurable item display program indicating that the measurement item is not measurable, automatic measurement program for measuring the next measurement item by skipping measurement of the non-measurable item, and an image representing each component According to the connection status of the components, the components that are in the normal connection state and the components that are not in the normal connection state can be identified by appearance. Processing procedure of the display operation to be displayed on so that it and the like described connection state display program.

  Each program stored in the memory 302 is read and executed by the CPU 301. The monitor 7 displays information such as test items (measurement items), measurement results, and component connection states in accordance with the program processing executed by the CPU 301. Further, the printer 8 prints out information such as display contents of the display unit and test results in response to an instruction from the controller 9. The input device 9 receives various instruction inputs by an operator, and may be configured integrally with a display unit like a touch panel.

  A functional block diagram of the controller 3 in this embodiment is shown in FIG. In FIG. 2, the question transmission unit 32 transmits a question signal for checking whether the component and the controller are normally connected to the component. The response receiving unit 33 receives a response signal that is returned from the component in response to the question signal. The connection state determination unit 34 determines whether the component is normally connected to the controller based on the presence / absence of a response signal and the content of the response signal. The connection state display creation unit 36 displays an image representing each of the plurality of components in correspondence with the actual arrangement position of the component in the test system, and based on the determination result of the connection state determination unit, the normal connection state A display signal is generated and output so that a component that is not in a normal connection state with a component that is present can be identified by appearance. The storage unit 35 includes a plurality of measurement items, a measuring instrument used for each measurement item, a measurement order of the measurement items, and a measurement impossible flag indicating whether or not each measurement item is not measurable. Is stored as a use measuring instrument table 351 shown in FIG.

FIG. 3 shows a configuration example of the usage measuring instrument table 351.
In this example, for each of the measurement items 1 to 10, a measuring instrument to be used is indicated by a circle, and a measuring instrument not to be used is indicated by a cross. For example, for measurement item 1, only measuring device A is marked with a circle, and other measuring devices B to G are marked with a cross. Therefore, it can be seen that only measuring instrument A is used.
Moreover, the measurement order when the controller 3 performs automatic measurement is set for the measurement items 1 to 10. In this example, the measurement items 1 to 10 are set in this order. The operator can input the measurement order using the input device 9 or the monitor 7.
In addition, a measurement impossibility flag is provided for each measurement item. The measurement impossible flag indicates whether or not each measurement item is in a measurable state. When the measurement impossible flag is ON (= 1), it indicates that the measurement item is not measurable. When the measurement impossible flag is OFF (= 0), it indicates that the measurement item is measurable. The measurement impossibility flag is set by the main control unit 31 as described below.

  The main control unit 31 transmits a switching signal for switching the measuring device used for each measurement item to connect to the device under test based on the stored contents of the used measuring device table 351 to the switching unit. In addition, the main control unit 31 transmits a question signal for a component that should be in a normal connection state from the question transmission unit, and then receives a response signal from the component in the response reception unit, and the connection state determination unit If it is determined that the connection state is not correct, the measurement item using the component determined not to be in a normal connection state is set to the measurement disable flag in the use measuring instrument table 351 to indicate that measurement is not possible (measurement). Impossible flag = 1), the connection state display creating unit 36 is controlled to display on the monitor 7 an indication that measurement is impossible. In addition, the main control unit 31 automatically performs measurement for each measurement item according to the measurement order set in the used measuring instrument table 351, and measures the measurement item for which the measurement disable flag = 1. Control to skip.

Next, the test operation of the device under test 2 executed by the test system 1 in the present embodiment will be described.
When the test program is executed by the controller 3, information related to the device under test 2 and the test item (measurement item) is displayed on the monitor 7. The operator of the test system 1 uses the input device 9 such as a mouse to select a test item to be executed and to instruct a test execution. The controller 3 executes a test program in accordance with various instructions input from the operator, and outputs control signals to the measuring device 4-n, the switch 5 and the controller 6 to be tested.

The test operation will be described in detail.
The controller 3 outputs a setting instruction such as measurement conditions of the device under test 2 to the controller under test 6. The controller under test 6 outputs a setting signal to the device under test 2 in accordance with an instruction from the controller 3, and sets the device under test 2 to a state corresponding to the measurement conditions. Further, the controller 3 controls the operation of the switching unit 5 according to the test procedure, performs switching (path switching) of the measuring device 4-n connected to the device under test 2, and the operation of the measuring device 4-n. Perform control (setting, etc.). The measuring device 4-n outputs a test signal to the device under test 2 according to an instruction from the controller 3, and measures a test response signal output from the device under test 2 in response to the test signal. The measurement value obtained by the measuring device 4-n is sent to the controller 3. The controller 3 compares the measured value with a threshold value to determine whether the measured value is good, that is, whether the operation of the device under test 2 is normal, and monitors the measured value and the determination result. To display. All of the above operations are automatically performed according to the test program. In addition, the controller 3 can automatically and continuously execute a plurality of test items according to a preset order. If the measuring device 4-n can determine whether or not the test signal output from the device under test 2 is acceptable, the measuring device 4-n may transmit only the quality determination result to the controller 3. .

Next, connection confirmation of each component by the controller 3 and display processing of the result will be described.
This process is realized by the test program described above. FIG. 4 is a diagram showing a screen (indicated by reference numeral 11) displayed on the monitor 7. The component button 12 and the test button 13 shown in FIG. 4 are also displayed on the initial screen when the test program is executed, and when the component button 12 is clicked, the screen shifts to the screen shown in FIG. Hereinafter, the screen 11 illustrated in FIG. 4 is referred to as a “connection confirmation screen”. If the test button 13 is clicked, the screen shifts to a “test execution screen” which is a screen for executing the above-described test operation.

  As shown in FIG. 4, in addition to the component button 12 and the test button 13 described above, an overall image 14 of the test system 1, an error content display area 15, a connection confirmation button 16, and the like are displayed on the connection confirmation screen 11. .

  The overall image 14 of the test system 1 includes a storage rack image 20 indicating a storage rack, a component image 21 indicating a component stored in the storage rack, and a controller image 22 indicating the controller 3 stored in the storage rack. It consists of. The actual test system 1 also includes a storage rack similar to the storage rack image 20 shown in FIG. 4, and each component and the controller 3 are stored at a predetermined position (predetermined predetermined position) of the storage rack. . In the overall image 14, the component image 21 and the controller image 22 are displayed in correspondence with the actual arrangement positions of the components and the controller 3. These displays are performed by the connection state display creation unit 36.

  In FIG. 4, each component image 21 has a component N (N is a natural number) as its name, but in reality, a name unique to each component is written. Moreover, the component image 21 and the controller image 22 may simulate the actual shapes of the respective components and the controller 3, or may simply represent an area where they are arranged.

  When the operator of the test system 1 clicks the connection confirmation button 16, the CPU 301 of the controller 3 performs connection confirmation of each component and display processing of the result. This process is normally instructed by the operator prior to the start of the test.

FIG. 5 is a flowchart showing connection confirmation of each component, display processing of the result, and the like. FIG. 5 is a flowchart.
First, in step S1, the main control unit 31 determines whether or not the component N is a connection confirmation target. FIG. 6 shows a connection confirmation target component table 352 describing whether each component is a connection confirmation target or not, and is stored in the storage unit 35 as a reference file. In FIG. 6, a component assigned 1 is set as a connection confirmation target, and a component assigned 0 is set out of a connection confirmation target. The connection confirmation target component table 352 shown in FIG. 6 is input and set from the input device 9 in this example. Here, the components that are not subject to connection confirmation are devices that do not directly affect the test results of the device under test 2 such as the monitor 7 and the printer 8, and conversely, the measuring device 4-n, Devices essential for the test such as the switch 5 are set as connection confirmation targets.

  Returning to the description of the flowchart in FIG. 5, in step S <b> 1, the main control unit 31 refers to the connection confirmation target component table 352 shown in FIG. 6 to determine whether or not the component N is a connection confirmation target. When the component N is determined to be a connection confirmation target in step S1, the process proceeds to step S2 and the question transmission unit 32 communicates with the component N. That is, a question signal is transmitted to the component N, and the response receiver 33 receives a response signal from the component N. Next, in step S3, it is determined whether or not there is a normal response from the component N as a result of communication with the component N. That is, based on the received response signal, the connection state determination unit 34 determines whether or not the component N is in a normally connected state. Even when a normal response signal cannot be received because the component N is out of order, it is determined that the component N is not in a normal connection state. When there is a normal response, the process proceeds to step S4, and the connection state display creation unit 36 causes the monitor 7 to display a display indicating “connection OK” for the component image 21 representing the component N. In the present embodiment, in the case of “connection OK”, the component image 21 indicating the component N is displayed in green.

  On the other hand, if it is determined in step S3 that there is no response from the component N or that a normal response has not been received, the process proceeds to step S5, where the connection state display creation unit 36 represents the component N. A display indicating “connection NG” for the product image 21 is displayed on the monitor 7 and an error message is displayed on the monitor 7, and the main control unit 31 uses the component N in the used measuring instrument table 351. Set the measurement impossible flag of the measurement item to be turned on (= 1). In the present embodiment, in the case of “connection NG”, the component image 21 indicating the component N is displayed in red.

  If it is determined in step S1 that the component N is not subject to connection confirmation, the process proceeds to step S6, where the connection state display creation unit 36 displays “connection confirmation target” for the component image 21 representing the component N. A display indicating “outside” is displayed on the monitor 7. In the present embodiment, in the case of “not subject to connection confirmation”, the component image 21 indicating the component N is displayed in blue.

After executing the process of any one of steps S4, S5, and S6, the process proceeds to step S7, where the main control unit 31 determines whether or not connection confirmation has been completed for all the components constituting the test system 1, The processing after step S1 is repeatedly executed until the connection confirmation is completed for all the components.
When the connection confirmation is completed for all the components, the main control unit 31 displays a test execution screen for instructing the test start of a plurality of measurement items, for example, in step S8, and “connection NG” in step S5. The measurement item using the specified component, that is, the measurement item with the measurement impossible flag = 1 in the used measuring instrument table 351 is displayed as being incapable of measurement.

  FIG. 7 is an example of a test execution screen displaying a cross mark indicating that measurement is not possible for the measurement items 2 to 4 that use the component designated as “connected NG”. In this example, after the connection confirmation is completed for all the components in step S7, the test execution screen of FIG. 7 is automatically displayed. In the example of the test execution screen in FIG. 7, the main control unit 31 performs the tests in order from the measurement item 1 by pressing the “measurement start” button on the right side of the screen. 2 to 4 are skipped because the measurement impossibility flag is ON, and the control is performed so that the measurement item 5 is automatically tested after the measurement item 1.

In addition, after the connection confirmation is completed for all the components in step S7, the operator instructs the display of the test execution screen from the input device 9 or the like instead of automatically displaying the test execution screen of FIG. It doesn't matter.
Alternatively, the test may be automatically started after the test execution screen is displayed in step S8.
Further, in the example of the test execution screen of FIG. 7, instead of automatically performing the test in order from the measurement item 1, the operator may issue a measurement instruction to each measurement item from the input device 9 or the like. .

  FIG. 8 is a diagram showing a connection confirmation screen 11 displaying the result of the connection confirmation. In FIG. 8, the component image 21 displayed in “connection OK”, that is, green, is indicated by diagonal lines (from the upper left to the lower right). In addition, the component image 21 displayed in “connection NG”, that is, red, is indicated by a rhombus, and the component image 21 displayed in “not connected”, that is, displayed in blue, is indicated by diagonal lines (from upper right to lower left). Accordingly, in FIG. 8, the component 4 and the component 15 are connected NG, the component 3 and the component 14 are not subject to connection confirmation, and the other components are connected OK. Is shown. Since the controller 3 itself does not need to perform connection confirmation, it is displayed as “not subject to connection confirmation”.

Further, in the error content display area 15, an error message indicating that there is a communication failure (connection failure) for each of the component 4 and the component 15 determined as “connection NG” is displayed. This error message display is performed by the process of step S5 in the flowchart of FIG.
The error message may be displayed so as to be superimposed on the component image 21 in which the error has occurred. When displayed in this way, it is possible to easily recognize which component has what kind of trouble.
Also, not only when the cable connection is defective or disconnected, but also when the component for which connection is to be confirmed has failed or when the power is not turned on, the normal response from the component is lost and the connection is judged as “NG”. Therefore, a failed component or a component that has not been turned on can be distinguished from a component that is “connection OK” on the connection confirmation screen 11.

  As described above, in this embodiment, it is determined whether or not each component is normally connected to the controller 3, and the component image 21 representing each component is displayed as the actual component in the test system 1. Since each of the components is connected to the controller 3 because different features are assigned according to the determination results (“connection OK” and “connection NG”) and displayed so that they can be distinguished from each other. It is possible to easily confirm whether or not

  In addition, as a display method for assigning different characteristics according to the determination result of the connection confirmation, a method other than displaying in different colors, for example, in the case of connection NG, the component image 21 indicating the component is blinked and displayed. For example, it is only necessary to distinguish between “connection OK” and “connection NG”, and the present invention is not limited to the above-described color discrimination.

  In addition, this invention is grasped | ascertained not only as a system which performs the process which concerns on this invention but as an apparatus, a method, a program for implement | achieving such a method and a system, and a recording medium which records the said program You can also.

  1: Test system, 2: Device under test, 3: Controller, 4-n: Measuring device (component), 5: Switcher (component), 6: Controller for device under test (component), 7: Monitor (Component), 8: printer (component), 9: input device.

Claims (1)

A plurality of components including a measuring instrument for measuring an output signal of the device under test; a controller connected to the component to control the operation of the component; a component connected to the component and the device under test; And a switching unit that switches a signal connection path between the device under test and
The controller includes a question transmission unit that transmits a question signal to a component;
A response receiver for receiving a response signal transmitted from the component in response to the interrogation signal;
A connection state determination unit that determines whether the component is normally connected to the controller based on the response signal;
A storage unit for storing a plurality of measurement items, a measuring device used for each measurement item, and a measurement order of the measurement items;
Measurement that is used for each measurement item based on the storage contents of the storage unit while controlling the question transmission unit, the response reception unit, and the connection state determination unit, and measuring each measurement item according to the measurement order stored in the storage unit A main control unit for transmitting a switching signal for switching the device to the switching unit,
After the main control unit transmits a question signal for a component from the question transmission unit, the response signal from the component is received by the response reception unit, and the component is in a normal connection state by the connection state determination unit If it is determined that the measurement item is not in the normal connection state, the measurement item using the component determined to be not in the normal connection state is skipped, and the next measurement item is automatically set according to the measurement order of the measurement item stored in the storage unit. A test system characterized by performing measurements.

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