KR950010558B1 - Apparatus for suppling the pif of a pcb automatic testing regulator - Google Patents
Apparatus for suppling the pif of a pcb automatic testing regulator Download PDFInfo
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- KR950010558B1 KR950010558B1 KR1019920016072A KR920016072A KR950010558B1 KR 950010558 B1 KR950010558 B1 KR 950010558B1 KR 1019920016072 A KR1019920016072 A KR 1019920016072A KR 920016072 A KR920016072 A KR 920016072A KR 950010558 B1 KR950010558 B1 KR 950010558B1
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- pif
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
Description
제 1 도는 본 발명에 따른 구성 블록도.1 is a block diagram according to the present invention.
* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings
1 : 모터 2 : 모토드라이버1: motor 2: motor driver
3 : PCB 4 : A/D변환기(Analog/Digtal Convertor)3: PCB 4: A / D Converter (Analog / Digtal Convertor)
5 : 선택기5: selector
6 : 스위프 마커제너레이터(Sweep Marker Generator : SMG)6: Sweep Marker Generator (SMG)
7 : 싱글신호발생기(Single Singal Generator)7: Single Singal Generator
8 : 인터페이스 9 : 콘트롤러8 interface 9 controller
10 : 전원부10: power supply
본 발명은 텔레비젼(TV) 생산라인의 피씨비 검사조정공정에 관한 것으로, 특히 피씨비 검사조정공정을 무인 자동화하기 위한 피씨비 자동조정기의 중간주파수 공급장치에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a PCB inspection adjustment process of a television (TV) production line, and more particularly to an intermediate frequency supply apparatus of a PCB automatic regulator for unattended automation of a PCB inspection adjustment process.
보다 상세하게는 콘트롤러를 사용하여 스위프파와 단일주파수를 빠르게 처리하여 PCB의 측정점의 검사조정시간을 단축시켜 TV생산공장에서 품질을 향상시킬 수 있도록 함에 있다.More specifically, it is possible to improve the quality in TV production plants by shortening the inspection and adjustment time of the measuring point of the PCB by quickly processing the sweep wave and single frequency using the controller.
종래에는 텔레비젼(TV) 생산라인의 피씨비 검사조정공정에서 중간주파수(IF), 특히 영상 중간주파수(Picture Intermadiate Frequency : PIF)를 공급함에 있어서, 작업자의 수작업에 의해 스위프파를 발생하는 스위프마커제너레이터나 단일주파수를 발생하는 싱글신호발생기 중의 하나를 선택하여 영상 중간주파수(PIF)를 공급하여 피씨비 조정 검사를 하였다.In the past, in order to supply intermediate frequency (IF), especially picture intermediate frequency (PIF) in a PC ratio inspection adjustment process of a television (TV) production line, a sweep marker generator that generates a swept wave by manual operation of an operator or One of the single signal generators generating a single frequency was selected and the intermediate frequency (PIF) was supplied to perform the PC ratio adjustment test.
그러나 상기한 종래의 수작업에 의한 중간주파수 공급장치는, 스위프파와 단일주파수를 단독으로 사용하는 경우에 스위프파를 정확하게 제어하는 별도의 콘트롤러가 없어 작업자의 목측 판단에 의존하여 조정을 하였으므로 정확한 조정이 힘들고 단일주파수를 피씨비에 공급하여 영상 중간주파수(PIF)를 조정하는 경우에는 작업자의 목측에 의한 정확한 조정은 가능하나 인접 채널의 간섭을 받는 것을 검사하지 못하는 단점이 발생되었던 것이다.However, the conventional manual intermediate frequency supply device does not have a separate controller for precisely controlling the sweep wave when the sweep wave and the single frequency are used alone. In the case of adjusting the intermediate frequency (PIF) by supplying a single frequency to the PC, it is possible to make an accurate adjustment by the operator's neck, but it is not possible to check the interference of adjacent channels.
또한 상기한 스위프파와 단일주파수를 병행하여 사용시에는 검사조정시간이 많이 걸리고 작업자의 목측 판단으로 인하여 상기한 두 조정간에 오차가 발생하여 상기 두 조정을 번갈아 반복 조정해야 되는 번거로움이 발생되었던 것이다.In addition, when the sweep wave and the single frequency are used in parallel, the inspection adjustment takes a lot of time, and an error occurs between the two adjustments due to the operator's observation of the operator, resulting in the inconvenience of having to repeatedly adjust the two adjustments.
본 발명에서는 상기한 제반 결점을 해소하기 위한 것으로, 스위프파와 단일주파수를 피씨비에 공급하여영상 중간주파수를 조정함에 있어, 콘트롤러의 빠른 처리속도와 정확한 제어 능력 및 데이타 저장능력을 최대한 이용하여 PCB의 검사조정시간을 단축하고 각 측정값을 메모리에 저장하여 항시 비교판단하여 반복 검사조정을 피하고 A/D변환기에 의한 데이타의 정확한 계측 및 콘트롤러에 의한 가변전압을 자동으로 정확하게 제어하여 오차발생을 줄여 품질향상을 도모함에 그 목적이 있다.In the present invention to solve the above-mentioned shortcomings, by supplying a sweep wave and a single frequency to the PC ratio to adjust the intermediate frequency of the image, the inspection of the PCB using the maximum processing speed and accurate control capacity and data storage capacity of the controller Shorten the adjustment time and save each measured value in memory to always compare and avoid repeated inspection adjustment, accurate measurement of data by A / D converter and automatic control of variable voltage by controller automatically and precisely to reduce errors to improve quality The purpose is to promote this.
이를 첨부 도면에 의해 설명한다.This will be described with reference to the accompanying drawings.
데이타를 입, 출력하는 인터페이스(8)를 통해 전원부(10)와 선택기(5)와 모터드라이버(2)를 제어하는 콘트롤러(9)와, 상기 콘트롤러(9)에 의해 제어되는 PCB(3)에 직류전압을 공급하는 전원부(10)와, 일정 주파수(예 : 30~60㎒)의 스위프파를 발생하는 스위프마커제너레이터(6)와 단일주파수를 발생하는 싱글신호발생기(7)의 출력을 콘트롤러(9)제어에 의해 선택하여 PCB(3)에 공급하는 선택기(5)와, PCB(3)에서 추출한 아날로그신호를 디지탈신호로 변환하여 콘트롤러(9)에 입력하는 A/D변환기(4)와, PCB(3)의 측정점을 조정하기 위한 모터(1)를 구동하는 모터드라이버(2)를 구비한다.The controller 9 controls the power supply unit 10, the selector 5, and the motor driver 2 through an interface 8 for inputting and outputting data, and the PCB 3 controlled by the controller 9. The output of the power supply unit 10 for supplying a DC voltage, the sweep marker generator 6 for generating a swept wave of a predetermined frequency (for example, 30 to 60 MHz), and the single signal generator 7 for generating a single frequency is controlled by a controller ( 9) a selector 5 which is selected by the control and supplied to the PCB 3, an A / D converter 4 which converts the analog signal extracted from the PCB 3 into a digital signal and inputs it to the controller 9; A motor driver 2 for driving the motor 1 for adjusting the measuring point of the PCB 3 is provided.
이하 첨부된 도면에 의해 본 발명의 작용 및 효과를 설명한다.Hereinafter, the operation and effects of the present invention will be described with reference to the accompanying drawings.
제 1 도는 본 발명에 따른 구성 블럭도이다.1 is a block diagram according to the present invention.
데이타를 입, 출력하는 인터페이스(8)를 통해 콘트롤러(9)에 의해 제어되는 전원부(10)에서 직류전압(예 : +9V)을 PCB(3)에 공급하고, 또다른 가변이 가능한 직류전압(예 : +5V)을 PCB(3)에 공급한다.The power supply unit 10 controlled by the controller 9 supplies the DC voltage (for example, +9 V) to the PCB 3 through the interface 8 for inputting and outputting data, and another variable DC voltage ( Example: + 5V) is supplied to the PCB (3).
상기 PCB(3)에 직류전압이 공급되면 릴레이로 구성된 선택기(5)가 콘트롤러(9)의 제어에 의해 스위프마커제너레이터(6)에서 발생되는 30㎒~60㎒의 스위프파를 PCB(3)에 공급한뒤, 상기 PCB(3)의 측정점에서 추출한 아날로그신호(예 : 영상 중간주파수=PIF)를 A/D변환기(4)를 통해 디지탈신호로 변환하여 인터페이스(8)를 거쳐 콘트롤러(9)에 입력한다.When a DC voltage is supplied to the PCB 3, a selector 5 composed of a relay transmits a 30 MHz to 60 MHz sweep wave generated by the sweep marker generator 6 to the PCB 3 under the control of the controller 9. After supplying, the analog signal (e.g., image intermediate frequency = PIF) extracted from the measuring point of the PCB 3 is converted into a digital signal through the A / D converter 4 to the controller 9 via the interface 8. Enter it.
상기 콘트롤러(9)는 디지탈신호로 입력된 영상 중간주파수(Picture Intermediate Frequency : PIF)를 제어하여 내부 메모리에 저장한뒤 인터페이스(8)를 통해 전원부(10)에서 발생되는 +5V의 직류전압을 일정간격으로 가변하여 증가(예 : 0.1V)시키면서 각각의 결과치를 A/D변환기(4)를 거쳐 디지탈값으로 변환하여 콘트롤러(9)에 전달한다.The controller 9 controls a picture intermediate frequency (PIF) input as a digital signal, stores it in an internal memory, and stores a DC voltage of + 5V generated by the power supply unit 10 through the interface 8 at a predetermined interval. Variable to increase (eg 0.1V) and convert each result to digital value through A / D converter 4 and transfer it to controller 9.
상기 콘트롤러(9)는 디지탈값으로 입력된 결과치를 바로전에 입력된 전압값과 비교하여 증가 또는 감소되는지를 판단하여 처리한 후 상기 동작을 반복하여 최대 전압(Vpp)을 찾는다.The controller 9 determines whether the result value inputted as the digital value is increased or decreased by comparing with the voltage value input immediately before, and then repeats the operation to find the maximum voltage Vpp.
이때의 공급전압이 자동이득제어(Auto Gain Control : AGC) 전압으로 각 PCB마다 조금씩 차이가 있으며, 이것을 PIF의 포화전압(Vpp)이라 하고 PIF조정에서 가장 중요한 사항이다.At this time, the supply voltage is auto gain control (AGC) voltage, which is slightly different for each PCB. This is called saturation voltage (Vpp) of PIF and is the most important matter in PIF adjustment.
상기 값이 달라지면 정확한 PIF조정을 기대할 수 없다.If the above values are different, accurate PIF adjustment cannot be expected.
상기의 전압가변시 최대전압(Vpp)값의 변화가 없으면 PCB(3)를 불량으로 처리한다.If there is no change in the maximum voltage (Vpp) value when the voltage is changed, the PCB 3 is treated as defective.
상기한 과정으로 PIF 포화전압을 조정하여 찾은 후 PCB(3)의 중간주파수에 해당하는 P점(예 : 58.9㎒)에서 PIF조정점(예 : 가변볼륨)을 조정하기 위하여 콘트롤러(9)가 인터페이스(8)를 경유하여 모터드라이버(2)를 제어하여 상기 모터드라이버(2)가 모터(1)를 구동시켜 측정 알고리즘에 의해 PCB(3)의 측정점을 돌리면서 상기 PCB(3)의 측정점에서 추출한 PIF의 출력을 A/D변환기(4)에서 디지탈신호로 변환하여 인터페이스(8)를 통해 콘트롤러(9)에 전달한다.After the PIF saturation voltage is adjusted by the above process, the controller 9 interfaces to adjust the PIF adjustment point (eg variable volume) at the P point (eg 58.9 MHz) corresponding to the intermediate frequency of the PCB 3. By controlling the motor driver 2 via (8), the motor driver 2 drives the motor 1 and extracts from the measurement point of the PCB 3 while turning the measurement point of the PCB 3 by a measurement algorithm. The output of the PIF is converted into a digital signal by the A / D converter 4 and transmitted to the controller 9 through the interface 8.
상기 콘트롤러(9)는 A/D변환기(4)에서 전달된 신호의 결과치를 비교하여 P점의 전압이 최대가 되는 점으로 조정한다.The controller 9 compares the result of the signal transmitted from the A / D converter 4 and adjusts it to the point where the voltage at the point P becomes maximum.
상기 결과치를 비교하여 P점의 전압이 최대가 되는 점으로 조정이 완료되면 콘트롤러(9)는 인터페이스(8)를 통해 선택기(5)를 제어하여 스위프마커제너레이터(6)에서 출력되는 스위프파를 차단하고, 싱글신호발생기(7)에서 발생하는 단일주파수(예 : 58.9㎒)의 중간주파수를 PCB(3)에 공급한뒤, 상기 콘트롤러(9)는 인터페이스(8)를 통해 모터드라이버(2)를 제어하여 상기 모터드라이버(2)가 모터(1)를 구동시켜 PCB(3)의 측정점의 가변볼륨을 시계방향(CW) 또는 반시계방향(CCW)으로 돌려 가변시키면서 PCB(3)의 측정점에서 추출되어 출력되는 PIF신호를 A/D변환기(4)를 경유하여 디지탈값으로 변환하여 이를 콘트롤러(9)에 전달하여 상기 콘트롤러(9)가 그 결과치를 비교하여 P점의 전압값이 최대가 되는 점으로 조정한 후 스위프마커제너레이터(6)에서 발생되어 공급되는 스위프파를 계측한 P점의 전압값과 비교하여 전압차이가 설정된 오차범위를 벗어나면 불량으로 처리하고 설정된 설정된 오차범위를 벗어나지 않으면 양품으로 간주한다.The controller 9 controls the selector 5 through the interface 8 to block the sweep wave output from the sweep marker generator 6 when the adjustment is completed to the point where the voltage at the point P is maximized by comparing the result value. After supplying the intermediate frequency of a single frequency (for example, 58.9 MHz) generated by the single signal generator 7 to the PCB 3, the controller 9 supplies the motor driver 2 through the interface 8. By controlling, the motor driver 2 drives the motor 1 to extract the variable volume of the measuring point of the PCB 3 by turning it clockwise (CW) or counterclockwise (CCW) and varying it at the measuring point of the PCB 3. And converts the output PIF signal into a digital value via the A / D converter 4 and transfers it to the controller 9 so that the controller 9 compares the result value to maximize the voltage value of the P point. After adjusting to, it is generated from the sweep marker generator 6 and supplied. If the voltage difference is out of the set error range, it is regarded as bad when the sweep wave is compared with the measured voltage value of P point.
상술한 바와같이 본 발명은 콘트롤러의 빠른 처리속도와 정확한 제어능력 및 데이타 저장능력을 최대한 이용하여 스위프파와 단일주파수를 피씨비에 공급하여 영상 중간주파수를 조정하는데 있어, 검사조정 시간을 단축하고 각 측정값을 메모리에 저장하여 항시 비교판단하여 반복 검사조정을 피하고 A/D변환기에 의한 데이타의 정확한 계측 및 콘트롤러에 의한 가변전압을 자동으로 정확하게 제어하여 오차발생을 최대한 줄여 품질을 향상시킬 수 있는 것이다.As described above, the present invention provides a sweeping wave and a single frequency to the PC to utilize the fast processing speed, accurate control capability, and data storage capability of the controller to adjust the intermediate frequency of the image, thereby reducing inspection adjustment time and measuring each measured value. It is possible to improve the quality by minimizing the occurrence of errors by storing the data in memory and avoiding repeated inspection adjustments at all times and avoiding repeated inspection adjustments and automatically controlling the accurate measurement of data by the A / D converter and the variable voltage by the controller.
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KR1019920016072A KR950010558B1 (en) | 1992-09-04 | 1992-09-04 | Apparatus for suppling the pif of a pcb automatic testing regulator |
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KR1019920016072A KR950010558B1 (en) | 1992-09-04 | 1992-09-04 | Apparatus for suppling the pif of a pcb automatic testing regulator |
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KR940007541A KR940007541A (en) | 1994-04-27 |
KR950010558B1 true KR950010558B1 (en) | 1995-09-19 |
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KR1019920016072A KR950010558B1 (en) | 1992-09-04 | 1992-09-04 | Apparatus for suppling the pif of a pcb automatic testing regulator |
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1992
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