KR100723141B1 - An apparatus for testing pdp power supply - Google Patents

Abstract

The present invention relates to a test apparatus for a PDP power supply device configured to set load condition data (current amount per time) to have electrical characteristics corresponding to a switching PDP TV panel.

The test apparatus of the PDP power supply apparatus of the present invention includes a computer for controlling the start of measurement by setting load condition data corresponding to the amount of current for each time zone of the PDP TV panel, and then determining whether the load current and the PDP voltage are positive or negative; A remote interface for interfacing with the computer; Under the control of the computer via the remote interface unit, the load condition data is subdivided into a preset scale and converted into an analog load condition signal, and the input load current and PDP voltage are converted into digital signals and output to the computer. A main control unit; A load unit connected to the PDP power supply device and operating in a switching manner and having a predetermined load; And supplying a PDP current to a PDP voltage terminal of the PDP power supply device, controlling a switching operation of the load part, and controlling the PDP voltage and the load current of the PDP power supply device according to the load condition signal from the main control part. And a current controller for outputting to the controller.

PDP Power Supply, Programmable, Load Unit

Description

Test apparatus for PD power supply unit {AN APPARATUS FOR TESTING PDP POWER SUPPLY}

1 is a block diagram of a general PDP power supply.

2 is an explanatory diagram for evaluating a conventional PDP power supply.

3 is a diagram explaining another evaluation method of a conventional PDP power supply.

4 is a configuration diagram of a test apparatus for a PDP power supply according to the present invention.

5 is an exemplary circuit configuration of the rod part of FIG.

Figure 6 is an operation of the test device of the PDP power supply according to the invention.

7 is a measurement waveform diagram according to the present invention.

Explanation of symbols on the main parts of the drawings

50: PDP power supply device 100: computer

200: programmable load device 210: remote interface unit

220: main control unit 230: load unit

240: current control unit 250: LCD display unit

260: key input VP: PDP voltage

IL: Load Current LD1, LD2: Load

SW: Switch

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a test apparatus for a PDP (Plazma Display Pannel) power supply, and in particular, by setting the load condition data (current amount by time) programmatically to implement the electrical characteristics corresponding to the PDP TV panel of the switching method, The present invention relates to a test apparatus for a PDP power supply that can easily test a power supply at low cost.

In general, a power supply such as a Switching Mode Power Supply supplies a large number of various voltages desired in a set, for example, a power supply of a PDP TV will be described with reference to FIG.

1 is a configuration diagram of a general PDP power supply.

Referring to FIG. 1, a general PDP power supply apparatus includes a first rectifying unit 11 rectifying an AC input voltage Vin of approximately 90V to 264V, and a second rectifying unit 12 rectifying the AC input voltage Vin. And a PFC unit 13 for compensating a power factor with respect to the voltage from the first rectifying unit 11 and converting it into a DC voltage of approximately 400 V, and a sustain of approximately 85 V for the voltage from the PFC unit 13. ) A sustain power supply unit 14 for converting the voltage to Vs, an address power supply unit 15 for converting the voltage from the PFC unit 13 to an address voltage Va of approximately 63V, and the PFC unit ( 13) a multi-power supply unit 16 for converting the voltage from 13) into various multi-voltages (Vm) such as 12V, 6V, 5.3V, tuner voltage, and audio amplification voltage, and the voltage from the second rectifier 12 It includes a standby power supply unit 17 for converting to a standby voltage (standby voltage).

Each power supply unit adopts a switching mode transformer using a switching method such as a PWM method and converts it into a desired voltage.

Such a PDP power supply should test whether it has the characteristics required by the PDP TV to be applied during manufacture, and this conventional PDP power supply test method will be described with reference to FIGS. 2 and 3.

2 is an explanatory diagram for evaluating a conventional PDP power supply.

Referring to FIG. 2, the conventional PDP power supply 10 measures the actual PDP TV panel 20 by connecting the same, which supplies power from the PDP power supply 10 to the PDP TV panel 20. While visually viewing the screen output state of the PDP TV panel 20, the characteristics of the PDP power supply device 10 are determined.

However, as described with reference to FIG. 2, in the conventional PDP power supply evaluation method, since all PDP TV panels 10 having different specifications are purchased for each manufacturer, there is a problem that the evaluation cost increases by that amount. In addition, there is a problem that the evaluation is not objective because it is an indirect visual judgment that depends on the subjective judgment of the evaluator, and thus there is a lack of confidence in the accuracy of the evaluation.

3 is a diagram illustrating another evaluation method of the conventional PDP power supply.

Referring to FIG. 3, the conventional PDP power supply 10 is connected to a load device 30 in which a resistance determined by a set voltage and a current required for a set is set, and to the PDP power supply 10. The measuring device 35 for measuring the voltage, current and power supplied from the PDP power supply 10 to the load device 30 is connected.

In this case, the load device 30 may be a resistive load having a fixed resistance or an electronic load capable of varying a resistance.

However, in the conventional PDP power supply evaluation method described with reference to FIG. 3, since the characteristics of the PDP TV panel differ significantly from each manufacturer, in the conventional method using a resistance rod and an electronic rod, a plurality of PDP TVs having various characteristics are provided. Since it is impossible to correspond to each panel individually, there is a problem that it is difficult to evaluate the accuracy characteristics of the PDP power supply.

The present invention has been proposed to solve the above problems, and its purpose is to programmatically set load condition data (current amount by time) to implement electrical characteristics corresponding to switching PDP TV panels, thereby providing a PDP power supply apparatus. To provide a test apparatus of PDP power supply that can easily test at low cost.

In order to achieve the above object of the present invention, a test apparatus for a PDP power supply apparatus of the present invention is a test apparatus for a PDP power supply apparatus for testing a PDP power supply apparatus for supplying a PDP voltage. A computer for controlling the start of measurement by setting load condition data corresponding to the amount of current for each time period, and then determining whether the load current and the PDP voltage are determined, and outputting the load current and the PDP voltage as a result of the determination; A remote interface for interfacing with the computer; Under the control of the computer via the remote interface unit, the load condition data is subdivided into a preset scale and converted into an analog load condition signal, and the input load current and PDP voltage are converted into digital signals and output to the computer. A main control unit; A load unit connected to the PDP power supply device and operating in a switching manner and having a predetermined load; And supplying a PDP current to a PDP voltage terminal of the PDP power supply device, controlling a switching operation of the load part, and controlling the PDP voltage and the load current of the PDP power supply device according to the load condition signal from the main control part. And a current controller for outputting to the controller.

The rod unit may include a load connected to ground at a PDP voltage terminal of the PDP power supply device, and a switch for switching the load.

The current controller may control an operation of a switch of the load unit, and output the PDP voltage and the load current of the PDP power supply device to the main controller.

The test apparatus of the PDP power supply may further include an LCD display for displaying operation state information under the control of the main controller.

The test apparatus of the PDP power supply device may further include a key input unit 260 for inputting an operation signal to the main control unit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings referred to in the present invention, components having substantially the same configuration and function will use the same reference numerals.

4 is a configuration diagram of a test apparatus of a PDP power supply according to the present invention.

Referring to FIG. 4, the test apparatus of the PDP power supply apparatus of the present invention includes a computer 100 and a program in the test apparatus of the PDP power supply apparatus for testing the PDP power supply apparatus 50 that supplies the PDP voltage VP. Capable load device 200.

The programmable load device 200 includes a remote interface unit 210, a main control unit 220, a load unit 230, a current control unit 250, an LCD display unit 250, and a key input unit 260. .

The computer 100 sets the load condition data corresponding to the amount of current for each time zone of the switching-type PDP TV panel to control the start of measurement in the main control unit 220 of the program function load device 200. It is determined whether the load current IL and the PDP voltage VP from the main controller 220 are determined, and as a result of the determination, the load current IL and the PDP voltage VP are output on the screen.

In the programmable load device 200, the remote interface unit 210 performs interfacing for serial communication such as RS-232C with the computer 100, for example, to transmit data from the computer 100. Is transmitted to the main control unit 220 of the programmable load device 200, and data from the main control unit 220 of the programmable load device 200 is transmitted to the computer 100.

The main controller 220 subdivids the load condition data to a preset scale and converts the load condition data into a load condition signal in an analog form according to the control of the computer 100 through the remote interface unit 210. In addition, the main controller 220 converts the load current IL and the PDP voltage VP input from the current controller 240 into digital signals and outputs them to the computer 100.

The load unit 230 is connected to the PDP power supply 50 to operate in a switching manner according to the current control of the current controller 240, and has a predetermined load.

The current controller 240 supplies the PDP current IP to the PDP voltage VP stage of the PDP power supply device 50 in response to the load condition signal from the main controller 220. The switching operation of the 230 is controlled, and the PDP voltage VP and the load current IL of the PDP power supply device 50 are output to the main controller 220.

5 is a diagram illustrating a circuit configuration of the rod of FIG. 4.

Referring to FIG. 5, the load unit 230 is connected in series with the loads LD1 and LD2 connected to ground at the PDP voltage VP stage of the PDP power supply device 50 and the loads LD1 and LD2 in series. It is connected to include a switch (SW) for switching operation according to the switching control of the current controller 240.

In this regard, the current controller 240 controls the operation of the switch SW of the load unit 230 and controls the PDP voltage VP and the load current IL of the PDP power supply device 50. Output to the main control unit 220.

4 and 5, the programmable load device 200 is operated by the LCD display unit 250 displaying operation state information under the control of the main control unit 220 and the main control unit 220. It may include a key input unit 260 for inputting a signal.

6 is an operation process diagram of a test apparatus of a PDP power supply according to the present invention.

In FIG. 6, step S610 is a step of setting load condition data corresponding to the amount of current for each time zone in the computer 100. S620 is a step of D / A converting the load condition data in the main control unit 220 of the programmable load device 200. S630 is a step of supplying a current corresponding to a load condition to the load unit 230. S640 is a step of measuring the PDP voltage (VP) and the load current (IL) through the load unit 230. S650 is an A / D conversion of the measured PDP voltage VP and the load current IL. S660 is a step of determining whether the measured PDP voltage VP and the load current IL are determined, and outputting the determination result.

7 is a measurement waveform diagram according to the present invention, which is a measurement PDP voltage (VP) and load current (IL) waveform diagram according to the present invention.

Hereinafter, the operation and effects of the present invention will be described in detail with reference to the accompanying drawings.

The test apparatus for the PDP power supply of the present invention is a device for testing the characteristics of the PDP power supply, whether or not the manufactured PDP power supply can supply power of the specification required by the PDP TV panel to be applied. The operation will be described with reference to FIGS. 4 to 6.

First, referring to FIG. 4, the computer 100 of the present invention is a computer including a keyboard, a main body, and a monitor, and the computer 100 includes load condition data corresponding to a current amount of time of a switching PDP TV panel. It is set in advance.

The computer 100 controls the characteristic measurement of the PDP power supply 100 while outputting the set load condition data to the programmable load device 200 (corresponding to S610 of FIG. 6).

Thereafter, the main control unit 220 of the programmable load device 200 receives the load condition data from the computer 100 through the remote interface unit 210 using, for example, RS-232 communication. After subdividing by scale, it converts into analog load condition signal. Then, the main controller 220 outputs the load condition signal to the current controller 240 (corresponding to S620 of FIG. 6).

For example, when the scale is 8-bit 256 steps, the main control unit 220 divides the load condition data into 8-bit 256 steps and converts the analog signal into an analog signal as described above.

The current controller 240 supplies the PDP current IP to the PDP voltage VP stage of the PDP power supply 50 according to the load condition signal from the main controller 220, and at the same time, The switching operation of the load unit 230 is controlled (corresponding to S630 of FIG. 6).

Accordingly, the load unit 230 is connected to the PDP power supply 50 to operate in a switching manner, has a predetermined load, and the load unit 230 and the current control unit 240 are shown in FIG. 4. It will be described with reference to FIG. 5.

4 and 5, the load unit 230 includes loads LD1 and LD2 connected to ground at the PDP voltage VP terminal of the PDP power supply device 50. Including the switch SW for switching the LD2, the current control unit 240 controls the operation of the switch SW of the load unit 230, the PDP voltage (VP) of the PDP power supply device 50 ) And the load current IL are output to the main controller 220.

Next, the current controller 240 measures the PDP voltage VP and the load current IL of the PDP power supply device 50 and outputs the load current IL to the main controller 220 (corresponding to S640 of FIG. 6). ).

In this case, the main controller 220 converts the load current IL and the PDP voltage VP input from the current controller 240 into digital signals to convert the computer 100 through the remote interface 210. Output to (corresponds to S650 of FIG. 6).

The computer 100 receives the load current IL and the PDP voltage VP from the main control unit 220 to determine whether the load current IL and the PDP voltage VP are appropriate (for each). Corresponds to S660 of FIG. 6).

For example, when the load current IL exceeds the predetermined upper limit reference value or is lower than the predetermined upper limit reference value, the load current IL is determined to be abnormal. If the current IL does not exceed the preset upper limit reference value and is not lower than the lower limit reference value, it is determined to be normal.

In addition, the computer 100 compares the PDP voltage VP with a preset upper and lower reference value, and determines that the PDP voltage VP is abnormal when the PDP voltage VP exceeds or exceeds a predetermined upper limit reference value. On the contrary, when the PDP voltage VP does not exceed the preset upper limit reference value and is not lower than the lower limit reference value, it is determined to be normal.

At this time, the computer 100 may output the waveform of the load current IL and the PDP voltage VP as shown in FIG. 7 together with the above-described determination result.

Meanwhile, the test apparatus of the PDP power supply apparatus of the present invention may further include an LCD display unit 250, and output operation state information to the LCD display unit 250 under the control of the main controller 220. Through this, it is possible to easily check the current operating state.

On the other hand, when the test apparatus of the PDP power supply apparatus of the present invention passes through the key input unit 260, it does not pass through the computer 100, but directly commands the main control unit 220 through the key input unit 260. You can enter

According to the present invention as described above, the load condition data can be set by a program method, so that various PDP power supply devices can be easily tested at low cost without directly purchasing various PDP TV panels.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, but is defined by the claims, and the apparatus of the present invention may be substituted, modified, and modified in various ways without departing from the spirit of the present invention. It is apparent to those skilled in the art that modifications are possible.

According to the present invention as described above, by setting the load condition data (current amount by time) programmatically to implement the electrical characteristics corresponding to the switching type PDP TV panel, it is easy to test the PDP power supply at low cost It can be effective.

In addition, a more accurate evaluation of the PDP power supply can be made, thereby improving product reliability of the PDP power supply.

Claims (5)

A test apparatus for a PDP power supply for testing a PDP power supply for supplying a PDP voltage, By setting the load condition data corresponding to the amount of current for each time zone of the switching type PDP TV panel, controlling the start of the measurement, and then determining whether the load current and the PDP voltage are determined, and outputting the load current and the PDP voltage on the screen. computer; A remote interface for interfacing with the computer; Under the control of the computer via the remote interface unit, the load condition data is subdivided into a preset scale and converted into an analog load condition signal, and the input load current and PDP voltage are converted into digital signals and output to the computer. A main control unit; A load unit connected to the PDP power supply device and operating in a switching manner and having a predetermined load; And In response to a load condition signal from the main control unit, a PDP current is supplied to a PDP voltage terminal of the PDP power supply unit, the switching operation of the load unit is controlled, and the PDP voltage and the load current of the PDP power supply unit are controlled by the main control unit. Current controller to output to Test device for a PDP power supply having a. The method of claim 1, wherein the rod portion, And a switch connected to ground at a PDP voltage terminal of the PDP power supply, and a switch for switching the load. The method of claim 1, wherein the current control unit, And controlling the operation of the switch of the load unit, and outputting the PDP voltage and the load current of the PDP power supply unit to the main control unit. The test apparatus of claim 1, wherein the test apparatus of the PDP power supply unit comprises: And a LCD display for displaying operation state information under the control of the main controller. The test apparatus of claim 1, wherein the test apparatus of the PDP power supply unit comprises: And a key input unit for inputting an operation signal to the main controller.

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