CN1464358A - Automatic Test Method of Notebook Computer Power Supply - Google Patents

Abstract

The invention relates to a method for automatically testing the power supply of a notebook computer, which designs a test program in a system for detecting the power supply of the notebook computer, and matches with a test tool, an electronic loader, a multipurpose ammeter and the like to know whether the power supply mainboard of the notebook computer is abnormal in advance so as to improve the defects that the time for carrying out entity test in a system forming mode in the past is long, and the machine plate parts are easy to be short-circuited and burnt, thereby reducing the test time, increasing the yield and improving the productivity and the quality of products.

Description

Automatic Test Method of Notebook Computer Power Supply

(1) Technical field

The invention relates to a method for automatically testing the power supply of a notebook computer, in particular to a method for checking in advance whether the main board of the notebook computer's power supply is good.

(2) Background technology

When the power supply of traditional notebook computers is not tested separately, it must be tested together with the system. If the main board or parts are short-circuited, it will easily cause the main board or parts to burn out, and the test time is quite long.

(3) Contents of the invention

An object of the present invention is to provide a notebook computer power supply automatic test method, which can overcome the long time of physical testing in the form of a system in the past, and the short-circuit and burnout of machine board components, adopt the notebook computer power supply automatic test system of the present invention It can reduce the test time, increase the excellent rate, and improve the production capacity and quality of the product.

Another object of the present invention is to provide an automatic test method for a notebook computer power supply, which can pre-check whether the mainboard of the notebook computer's power supply is good, and can use the problem of concentrated codes of bad tests to facilitate maintenance.

In order to further illustrate the purpose, structural features and effects of the present invention, the present invention will be described in detail below in conjunction with the accompanying drawings.

(4) Description of drawings

Fig. 1 is an architecture diagram of relevant components of the system of the present invention.

Fig. 2 is an appearance diagram of relevant components of the system of the present invention.

Fig. 3 is the flow chart of the present invention in computer testing.

Figure 4 is a flow chart of the testing procedure of the present invention.

(5) specific implementation

Please refer to FIG. 1 , which is an architecture diagram of related components of the system of the present invention. It includes a power board 1 to be tested, a test tool 2, a multi-purpose electric meter 3, a power supply 4, an electronic load 5, an oscilloscope 6, a screen 7, a computer 8 and a printer 9, etc.

The test tool 2 is placed on the power board 1 to be tested, and is in contact with the test point of an in-circuit tester (ICT). The multipurpose electric meter 3 is connected with the test tool 2 for measuring voltage. The power supply 4 is connected with the test tool 2 and supplies the DC voltage of the power board 1 to be tested. The electronic load machine 5 is connected with the test tool 2 to consume a constant current value. The oscilloscope 6 is connected with the test tool 2 for measuring frequency, waveform and rise time. The computer 8 is connected with the test tool 2 through the control interface 81; it is connected with the multipurpose electric meter 3, the power supply 4, the electronic load machine 5 and the oscilloscope 6 through the IEEE-488 interface 82, and a program is provided in it for setting Determine test functions, execute test function items, read and judge test results and other related work. The screen 7 is connected with the computer 8 for displaying the test status. The printer 9 is connected with the computer 8 for printing bad test items and all test items, and uses bad codes to prompt problem points for direct reference by maintenance personnel to save testing time.

Please refer to Fig. 3, which is a flow chart of testing the computer system of the present invention. Include the following steps:

(1). Put the power supply board to be tested on the test tool 31;

(2). Set the test function 32, the test function items include AC leakage current, output DC voltage, test output voltage of power saving mode, DC converter pulse width modulation frequency, CPU efficiency, battery leakage current, battery low voltage Warn and detect shutdown voltage and battery efficiency;

(3). Operate according to the test program, and perform the test, display and reading work 33;

(4). Next, determine whether 34 is abnormal?

If abnormal, use bad codes to prompt the problem point, and print out 341 for the direct reference of the maintainer; otherwise, if it is normal 342, then take out the power board to be tested, and wait for the next power board to be tested for testing.

In this way, it is possible to know in advance whether the power supply board to be tested is abnormal.

See also Fig. 4, be the flowchart of test program of the present invention, at first, detect whether the AC leakage current of the power board to be tested is lower than 0.31 milliamps (mA)? 41.

If it is higher than 0.31 mA, it means abnormal. At this time, the measurer will deal with it as a bad code and print it out; otherwise, check whether the output DC voltage test point value is +5Vo, +3Vo, +12Vo? 42.

If not, it means abnormal. At this time, the measurer will deal with the bad code and print it out; otherwise, test whether the output voltage test point value of the power saving mode is +5Vs, +3Vs, +12Vs, +18Vo, +15Vo? 43.

If not, it means abnormal. At this time, the measurer will deal with it as a bad code and print it out; otherwise, check whether the pulse width modulation frequency of the DC converter is between 210 and 300KHz? 44.

If not, it means abnormal. At this time, the measurer will process it with bad code and print it out; otherwise, check whether the CPU efficiency is higher than 88%? 45.

If not, it means abnormal. At this time, the measurer will deal with it as a bad code and print it out; otherwise, check whether the battery leakage current value is lower than 6 mA? 46.

If not, it means abnormal. At this time, the measurer will deal with the bad code and print it out; otherwise, check whether the battery voltage value is lower than the minimum voltage value of the battery type used? 47. Taking lithium battery as an example, it should be lower than 13.5V; taking Ni-MH battery as an example, it should be lower than 11.5V.

If not, it means abnormal. At this time, the measurer will deal with the bad code and print it out; otherwise, check whether the voltage value of the battery at shutdown is lower than the maximum voltage value of the battery type? 48. Taking lithium batteries as an example, it should be lower than 11.5V; taking Ni-MH batteries as an example, it should be lower than 9.5V.

If not, it means abnormal. At this time, the measurer will deal with the bad code and print it out; otherwise, check whether the battery efficiency is higher than 80%? 49.

If not, it means abnormal. At this time, the tester will deal with the bad code and print it out; otherwise, it means that the above-mentioned test functions are normal, that is, the function of the power board under test is normal.

In summary, the detection method of the present invention has the following advantages:

(1). It can improve the long time of physical testing in the form of a system in the past, and the lack of short-circuit and burning of machine board parts.

(2). It can reduce the test time, increase the good rate, and improve the production capacity and quality of the product.

(3). Utilize bad codes to prompt problem points, which is convenient for maintenance personnel to overhaul.

Of course, those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the present invention, rather than as a limitation to the present invention, as long as within the scope of the spirit of the present invention, the implementation of the above Changes and modifications of the examples will fall within the scope of the claims of the present invention.

Claims (11)

1. a notebook computer power supply automatic detecting method is characterized in that, comprises the following steps: (1). put and establish power machine plate to be measured on testing appliance; (2). set test function, its test function project comprises voltage, direct current transducer pulse-width modulation frequency, micro controller efficient, battery drain stream, battery low-voltage caution, detection shutdown voltage and the battery efficiency of ac leakage stream, DC voltage, test battery saving mode; And (3). according to the test procedure running, test, show, read and differentiation work;

2. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, the ac leakage stream of step (2) is then being represented unusually more than 0.31 milliampere.

3. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, the DC voltage of step (2)+5 ,+3 ,+then expression is unusual outside 12 volts the operating voltage.

4. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, the voltage of the test battery saving mode of step (2)+5 ,+3 ,+12 ,+18 ,+then expression is unusual outside 15 volts the operating voltage.

5. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, then expression is unusual outside 210～300KHz for the direct current transducer pulse-width modulation frequency of step (2).

6. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, the micro controller efficient of step (2) is then being represented normally more than 88%.

7. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, the battery drain flow valuve of step (2) is lower than 6 milliamperes, and then expression is normal.

8. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, the battery low-voltage of step (2) is lower than the minimum voltage value of use battery pattern and then represents normally.

9. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, the battery of step (2) is then represented normally in the maximum voltage value that the shutdown magnitude of voltage is lower than the battery pattern.

10. notebook computer power supply automatic detecting method as claimed in claim 8 is characterized in that the battery pattern can be lithium or Ni-MH battery.

11. notebook computer power supply automatic detecting method as claimed in claim 1 is characterized in that, it is normal that the battery efficiency of step (2) is higher than 80% expression.

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