KR100269224B1 - An apparatus for testing an electric device and method thereof - Google Patents

Abstract

PURPOSE: An apparatus for testing electrical devices is provided to be capable of simply testing various of items on a single electrical device or an electrical device installed the equipment. CONSTITUTION: An apparatus for testing electrical devices includes a main body(100) having a plurality of functional circuit units for test therein. A power supply unit(101) supplies the power to a system. A main controller(102) controls the entire system and performs communication with an external computer(120). A data acquisition unit(103) converts digital signals from the main controller(102) into analog signals to output them to a test perform unit(104). The data acquisition unit(103) also converts the analog signals from the test perform unit(104) into digital signals to output them to the main controller(102). The test perform unit(104) performs a given test by means of the analog signals from the data acquisition unit(103) depending on a control command from the main controller(102) to input the resulting analog signals to the data acquisition unit(103). A channel selector(105) selects a specific channel relating to the test in the test perform unit(104).

Description

An apparatus for testing an electric device and method

The present invention relates to an electrical device testing apparatus and a method thereof, and more particularly, to test an abnormality of an electrical device installed in a single electrical device or any device or equipment, and a data file of a failure diagnosis program of the electrical device. Therefore, the present invention relates to an electrical device testing apparatus and a method for easily testing an electrical device under test by modifying a data file without modifying the main program.

In general, industrial machinery is largely composed of a mechanical unit and a control circuit unit. The mechanism part is a part that actually performs an operation or action, which is composed of a single device or a combination of a plurality of unit devices and device elements. The control circuit part is a part that controls the device elements of such a mechanical part to perform a single operation or a complex operation having an organic relationship with each other. The control circuit part usually includes a main controller which controls the system as a whole, and a control of the main controller part. Sub-controller and system operation that transmits a signal for controlling the operation and operation of each unit device according to the command, and receives a detection signal from a sensor installed in the unit device and transmits it to the main controller. And a memory unit for storing various data.

Such an industrial machine is usually provided with an electric device as the control circuit unit or as an accessory device constituting the control circuit unit. In the conventional testing of such an electric device, various items such as input / output voltage measurement and resistance are provided. When measuring and testing a large number of items such as measurement, conduction test, disconnection test, short circuit test, diode test, and normal operation check by constant frequency application, various test equipments were mobilized by hand. Therefore, it takes a lot of time, there is a problem that the reliability is low because the test results vary depending on the operator. In addition, even when testing by any test program, it is difficult to work due to secondary problems such as modifying a part of the main program or preparing a separate program according to various test items.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides an electric device test apparatus and method for easily testing a single electric device or an electric device installed in an arbitrary device or equipment over various items. There is a purpose.

1 is a block diagram schematically showing the configuration of an electrical apparatus test apparatus according to the present invention.

Figure 2 is a test circuit configuration of the test performing section and the channel selector of the electrical device test apparatus according to the present invention.

Figure 3 is a schematic configuration diagram of the check channel of the channel selector of the electrical device testing apparatus according to the present invention.

4 is a flowchart of an execution program on the control external computer side employed in the electrical apparatus test method according to the present invention.

5 is a flowchart of an execution program on the electrical device testing device side employed in the electrical device testing method according to the present invention;

<Description of the code | symbol about the principal part of drawing>

100 Main body 101 Power supply

102.Main control section 103.Data acquisition section

104 ... Test execution section 105 ... Channel selection section

106.Main power cable connection terminal 107 ... Communication cable connection terminal

108 ... Power cable connection terminal 109,110 ... Check cable connection terminal

111, 112 ... Manual check cable connection terminal 113 ... External check cable connection terminal

120 ... (control) External computer 130 ... Checkpoint

140.External check box

Electrical apparatus test apparatus of the present invention for achieving the above object includes a power supply unit, a main control unit, a data acquisition unit, a test performing unit and a channel selector. The power supply unit supplies power to the system. The main control unit controls the system as a whole and communicates with an external computer. The data acquisition unit converts and outputs a digital signal from the main control unit into an analog signal, converts the input analog signal into a digital signal, and transfers the digital signal to the main control unit. The test execution unit performs an arbitrary test by the analog signal from the data acquisition unit according to the control command from the main control unit, and inputs the resulting analog signal to the data acquisition unit. The channel selector is provided to select a specific channel related to test execution in the test performer.

Preferably, the test performing unit comprises a power supply stage for applying power to the inspection object; A conduction measurement stage for measuring a conduction state between two specific pins of the inspection object; A voltage output and amplifying stage for checking an arbitrary voltage value output and amplifying function of the inspection object; A resistance measuring stage for measuring resistance of the inspection object; A voltage measuring stage for measuring an input voltage of the inspection target; A load application stage for checking whether the instrument panel, such as a thermometer or a pressure gauge, of the inspection object is normally operated; A ground applying end for checking a grounding function of the inspection object; And a manual measurement stage for manually measuring the inspection object.

In addition, the electrical device test method according to the present invention to achieve the above object, (a) initializing the communication port of the control computer; (b) creating and displaying a main menu screen; (c) self-diagnosing the electrical device test device; (d) if a main menu is selected, generating and displaying a corresponding sub-menu screen; (e) if a submenu is selected, creating and displaying a menu screen of a corresponding failure indication list; (f) if a menu of the failure indication list is selected, opening the corresponding data file; (g) generating and displaying the screen to be tested; (h) transmitting test interface control data (ICD) of the data file; And (i) conducting a test by the transmitted test ICD.

Preferably, the step (i) comprises: (i-1) initializing the electrical device test device; (i-2) determining whether the ICD has been received; (i-3) operating the relay circuit board and the test circuit board assembly relay if the ICD has been received; (i-4) deactivating all relays after reading the analog-to-digital (A / D) channel; And (i-5) transmitting the performance result to the host computer, and checking whether the ICD has been received.

According to the present invention as described above, by providing a program for troubleshooting and making a data file, there is an advantage that the electrical device to be tested can be simply tested over various items by only modifying the data file without modifying the main program.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic configuration diagram of an electrical device testing apparatus according to the present invention.

Referring to FIG. 1, the electrical device testing apparatus according to the present invention includes a main body part 100 having a plurality of functional circuit parts for testing therein, and various cables provided outside the main body part 100. It is largely composed of connection terminal.

The functional circuit unit includes a power supply unit 101, a main control unit 102, a data acquisition unit 103, a test execution unit 104, and a channel selector 105. The power supply 101 supplies power to the system. The main control unit 102 controls the system as a whole and performs communication with the external computer 120, for example, a notebook computer. The data acquisition unit 103 converts the digital signal from the main control unit 102 into an analog signal and outputs it to the test execution unit 104, and converts the analog signal input from the test execution unit 104 into a digital signal. Transfer to the main control unit 102. The test execution unit 104 performs an arbitrary test by the analog signal from the data acquisition unit 103 according to the control command from the main control unit 102, and outputs the analog signal as a result to the data acquisition unit 103. Enter The channel selector 105 is provided to select a specific channel related to conducting a test in the test performer 104.

Here, in particular, each functional circuit unit as described above is composed of a card assembly detachable to the main body portion (100). And, each card assembly is installed to enable communication with each other by a main board assembly (not shown) provided in the main body portion (100).

The cable connection terminal includes a main power cable connection terminal 106 for supplying power to the system, a communication cable connection terminal 107 for communication with an external computer 120, and a power supply for supplying power to the external computer 120. It consists of the cable connection terminal 108, the inspection cable connection terminals 109 and 110 for connection with the inspection object 130, and the manual inspection cable connection terminals 111 and 112 for manual inspection. In addition, an external inspection cable connection terminal 113 is further provided for connection of the external inspection box 140 so that a test may be performed using a general measuring device.

In addition, the test execution unit 104 measures the conduction state between the power supply stage 104a for applying power to the inspection object 130 and two specific pins of the inspection object 130 as shown in FIG. 2. Resistance measurement for measuring the resistance of the conduction measurement stage 104b for checking, the voltage output and amplification stage 104c for checking an arbitrary voltage value output and amplification function of the inspection object 130, and the inspection object 130. The stage 104d, the voltage measuring stage 104e for measuring the input voltage of the inspection object 130, and the load applying stage for checking whether the instrument panel, such as a thermometer or a pressure gauge, of the inspection object 130 is normally operated ( 104f), a ground applying end 104g for checking the grounding function of the inspection object 130, and a manual measurement stage 104h for manually measuring the inspection object 130. FIG. In addition, the test execution unit 104 having such a configuration includes one test as shown in FIG. 2 together with the three relay matrices 105a, 105b, and 105c provided in the channel selector 105. Configure the circuit.

3 is a schematic configuration diagram of a check channel of the channel selector 105.

Referring to FIG. 3, the channel selector 105 includes a total of six card assemblies, which constitute one set of three cards, and each group is further divided into matrix A, matrix B, and matrix C according to functions. For example, three card assemblies of Card 1 (105a), Card 2 (105b), and Card 3 (105c) are composed of one set and connected to the J2 connector 301 provided in the main body portion 100 of the system. The three card assemblies of the card 4 (105d), the card 5 (105e), and the card (6) 105f are composed of another set and connected to the J3 connector 302. Reference numeral 303 denotes a connector for connection with the external check box 140.

Then, the process of testing the electrical apparatus by the electrical apparatus test apparatus according to the present invention having the configuration as described above will be described.

4 and 5 show the execution process of the electrical apparatus test method according to the present invention, Figure 4 is a flow chart of the program performed on the control external computer side, Figure 5 is the flow of the program performed on the electrical device testing apparatus side It is a chart.

Referring to FIG. 4, first, the communication port of the control external computer 120 is initialized according to the electrical device test method according to the present invention (step 401). Thereafter, a main menu screen is generated and displayed (step 402). Then, the electrical test apparatus is self-diagnosed (step 403). Then, it is determined whether the main menu is selected (step 404). In this determination, if the main menu is not selected, it is continuously checked whether the main menu is selected, and if so, a sub-menu screen is generated and displayed (step 405). Then, it is determined whether the submenu is selected (step 406). If no submenu is selected in this determination, the program proceeds back to step 404, and if so, the current screen is saved and deleted (step 407). The menu screen of the failure indication list is generated and displayed (step 408). Then, it is determined whether the menu of the failure indication list is selected (step 409). If the menu of the failure indication list is not selected in this determination, the flow returns to step 405, and if selected, deletes the current screen (step 410). The data file is opened (step 411) to generate and display a screen to be tested (step 412). Then, the test ICD of the data file is transferred (step 413), and the test is performed by the transmitted test ICD. That is, the test is received by receiving the test ICD from the electrical test apparatus. This will be described with reference to FIG. 5.

Referring to FIG. 5, the electrical device testing apparatus undergoes an initialization process before performing a full-scale test. That is, the global variable is initialized first (step 501). Then set the interrupt vector table (step 502). The timer is then initialized (step 503) and the communication port is initialized (step 504). Then, the peripheral interface is initialized (step 505), the relay buffer is initialized (step 506), and the interrupt control register is initialized (step 507). Then, it is determined whether the ICD has been received (step 508). If the ICD has not been received in this determination, continue checking to see if it has been received, and if the ICD has been received, activate the relay circuit board assembly relay (step 509) and operate the test circuit board assembly relay (step 510). Then, the A / D channel is read to test a predetermined item (step 511).

At this time, there are a number of items in the test items, such as output voltage measurement, resistance measurement, conduction test, disconnection test, short circuit test, diode test, and normal operation check according to a constant frequency application.

The electrical test unit is designed to test electrical devices and cables by connecting up to four adapters. At this time, if the adapter is connected incorrectly, an error message is displayed on the screen.

Input voltage measurement is to check how many volts the object is to be measured. The operator can set the range of voltage to be measured in the data file. If the range is omitted, the basic voltage range is 18V to 30V. . At this time, in the configuration of the data file, the distinction between the adapter number and the measuring pin uses a "-" symbol, and there must be two pins. In addition, "D =" of the data recognizer is recorded in the order of +,-, range. For example, when the measurement range is 5V to 10V, the data file is configured as "T = VT: Y = 010: N = 010: D = 78-2,78-12,5,10: #". Where 'T' is the test item identifier, '=' is the assignment symbol, 'VT' is the voltage test code, ':' is the code for field discrimination, and 'Y' and 'N' are branch identifiers after the condition judgment '010' represents the test line number, 'D' represents the data identifier, '78 -2 'and '78 -12' represent the adapter number 78, the measurement pin number 2 and 12 respectively.

Resistance measurement tests the resistance of the object to be measured. The operator must specify the resistance range in the data file. When the resistance range is 5 kV to 10 kV, the data file is constructed as "T = RT: Y = 010: N = 010: D = 78-3,78-13,5,10: #".

The conduction test checks whether the connection between two specific pins is correct. If the test result is less than 5Ω, it is considered as a conduction state. At this time, the data file is configured as "T = CT: Y = 010: N = 010: D = 78-4,78-14: #".

The 28V output test checks if normal operation is performed by applying a voltage of 28V to the measurement object. The data file reads "T = VA: Y = 010: N = 010: D = 78-5,78-15: # Is configured as ".

The disconnection test checks whether there is a disconnection between two specific pins. If the test result is more than 10KΩ, it is judged as disconnection. At this time, the data file is constructed as "T = ST: Y = 010: N = 010: D = 78-6,78-16: #".

The other disconnection test checks the disconnection of the pins other than the given pins and is mainly used for cable checks. At this time, the data file is configured as "T = SS: Y = 010: N = 010: D = 78-7,78-17,78-27, ...: #".

After 28V is applied, voltage measurement is similar to the input voltage measurement, in which 28V and ground are respectively applied to any two pins to measure the voltage of the measurement object, and the voltage between the two pins to be measured is checked. There must be four pins, and the operator may specify a certain range. If there is no voltage range indication, the measurement is assumed to be 18V to 30V. For example, if the voltage range is 5V to 9V, the data file is " T = V8: Y = 010: N = 010: D = 78-8,78-18,78-28,78-38,5,9: # Is configured as ".

The conduction test after 28V application is similar to the conduction test, where 28V and ground are applied to any two pins to check the conduction of the object to be measured, and the conduction between the two pins to be measured is checked. There must be four pins, and the data file is configured as "T = C8: Y = 010: N = 010: D = 78-9,78-19,78-29,78-39: #".

The diode test is a check of the diodes in the electrical system for normal operation. The data file should be recorded in the forward order. The actual test checks both the forward and reverse cases. At this time, the data file is configured as "T = DT: Y = 010: N = 010: D = 78-10,78-20: #".

The arbitrary voltage output test takes into account that various voltages such as 5V and 10V other than 28V may be used for the electric device under test, and checks whether the normal operation is performed by applying an arbitrary voltage. There must be an output voltage. For example, when there is an output voltage of 5V, the data file is constructed as "T = VO: Y = 010: N = 010: D = 78-11, 78-21,5: #".

The load application test is to check whether the instrument panel of thermometers, pressure gauges, etc. installed in the electric equipment is operating normally. There must be two pins and a load resistor. As load resistance values, 0 Hz, 15 Hz, 30 Hz, 460 Hz, 917 Hz, 2360 Hz, and the like are used. For example, when the load resistance value is 2360 kV, the data file is constructed as "T = LT: Y = 010: N = 010: D = 78-12,78-22,2360: #".

In the semi-automatic voltage measurement, an adapter is connected to one side of a measurement object to apply a voltage of 28V to an arbitrary pin, and the remaining measurement pins are manually checked by a computer screen using a manual inspection terminal. It will specify all pins to which the 28V voltage will be applied. If there are four pins, the data file will read "T = VH: Y = 010: N = 010: D = 78-13,78 -23,78-33,78- 43: # ".

The frequency application test is to check whether the engine operates normally by applying a constant frequency to measure the revolution per minute (RPM) of the engine speedometer.In the system, the timer is operated to output the voltage high or low. do. There must be two pins and an RPM value. For example, if the RPM is 1500, the data file is constructed as "T = FT: Y = 010: N = 010: D = 78-14,78-24,1500: #".

Manual voltage measurement is a multimeter function that uses a manual check terminal to measure the voltage between two pins and then check them on a computer screen. There is no data after the data recognizer in the data file. That is, the data file is constructed as "T = VS: Y = 010: N = 010: D =: #".

To measure resistance manually, measure the resistance between the two pins using the manual check terminal, and then check it on the computer screen. There is no data after the data recognizer in the data file. That is, the data file is constructed as "T = RS: Y = 010: N = 010: D =: #".

In the conduction manual test, the resistance between two pins is measured using a manual check terminal, as in the resistance manual measurement, and then confirmed by a computer screen. There is no data after the data recognizer in the data file. That is, the data file is constructed as "T = CS: Y = 010: N = 010: D =: #".

After 28V application, the load application test applies 28V and ground to any two pins of the measurement object and performs the same check as the load application test. There must be four pins and a load value. As load values, 0 Hz, 15 Hz, 30 Hz, 460 Hz, 917 Hz, 2360 Hz, etc. are used. For example, if the load value is 2360 Hz, the data file is constructed as "T = L8: Y = 010: N = 010: D = 78-18,78-9,78-7,78-48,2360: #" do.

After 28V application, the frequency application test applies 28V and ground to any two pins of the measurement object and performs the same checks as the frequency application test. There must be four pins and an applied value. If the authorized value is 1500 RPM, the data file is constructed as "T = F8: Y = 010: N = 010: D = 78-19,78-9,78-7,78-49,1500: #" .

Voltage measurement after applying 28V and 28V is similar to the input voltage measurement by applying 28V and ground to any 4 pins to check the voltage of the object to be measured and checking the voltage between the two pins to be measured. There must be six pins, and the operator can specify a certain range. If there is no voltage range indication, 18V to 30V is assumed and checked. If no range is specified, the data file reads "T = VV: Y = 010: N = 010: D = 7-20,7-1, 7-2,7-3,7-4,7-5: #" It is composed as follows.

As described above, when various measurements and tests on arbitrary measurement objects are completed, the operation of all relays is stopped (step 512). Then, the execution result is transmitted to the host computer (step 513), and it is checked whether the ICD has been received.

On the other hand, referring back to the flowchart of FIG. 4, after the test ICD of the data file is transmitted (step 413), it is determined whether the test has ended (step 414). In this determination, if the test has not ended, the process returns to step 413. If the test ends, the data file is closed (step 415). Then, the current screen is deleted (step 416), the test results are stored (step 417), and then returned to step 208. This concludes the measurement and testing of any measurement object.

As described above, the electrical device testing apparatus and the method according to the present invention provide a program for diagnosis of failure, and make a data file of the electrical device to be tested by modifying the data file without modifying the main program. It has the advantage of being simple to test across.

Claims (4)

A power supply for supplying power to the system; A main control unit which controls the system as a whole and performs communication with an external computer; A data acquisition unit converting the digital signal from the main control unit into an analog signal and outputting the analog signal; converting the input analog signal into a digital signal and transferring the digital signal to the main control unit; A test execution unit which performs an arbitrary test by the analog signal from the data acquisition unit according to a control command from the main control unit, and inputs the resultant analog signal into the data acquisition unit; And And a channel selector for selecting a specific channel associated with conducting a test in the test performer. The method of claim 1, wherein the test execution unit A power supply stage for applying power to an inspection object; A conduction measurement stage for measuring a conduction state between two specific pins of the inspection object; A voltage output and amplifying stage for checking an arbitrary voltage value output and amplifying function of the inspection object; A resistance measuring stage for measuring resistance of the inspection object; A voltage measuring stage for measuring an input voltage of the inspection target; A load application stage for checking whether the instrument panel, such as a thermometer or a pressure gauge, of the inspection object is normally operated; A ground applying end for checking a grounding function of the inspection object; And And an manual measuring stage for manually measuring the inspection object. (a) initializing a communication port of the controlling computer; (b) creating and displaying a main menu screen; (c) self-diagnosing the electrical test apparatus; (d) if a main menu is selected, generating and displaying a corresponding sub-menu screen; (e) if a submenu is selected, generating and displaying a menu screen of a corresponding failure indication list; (f) if a menu of the failure indication list is selected, opening a corresponding data file; (g) generating and displaying the screen to be tested; (h) sending a test ICD of the data file; And (i) conducting a test by the transmitted test ICD. The method of claim 3, wherein step (i) comprises (i-1) initializing the electrical test apparatus; (i-2) determining whether the ICD has been received; (i-3) operating the relay circuit board and the test circuit board assembly relay if the ICD has been received; (i-4) after reading the A / D channel, disabling all relays; And (i-5) transmitting the performance result to the host computer, and checking whether the ICD has been received.

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