TW201346273A - Power supply test system - Google Patents

Abstract

A power supply test system for testing a power supply includes a switch module, a temperature detection unit, a control module and a heating and cooling module. The switch module inputs a predetermined temperature value in the control module. The temperature detection unit detects a temperature signal of the power supply, and transmits the temperature signal to the control module. When the temperature signal detected by the temperature detection unit is lower than the predetermined temperature value, the control module outputs a first control signal to the heating and cooling module. The heating and cooling module heats the power supply. When the temperature signal detected by the temperature detection unit is higher than the predetermined temperature value, the control module outputs a second control signal to the heating and cooling module. The heating and cooling module cools the power supply until the temperature signal detected by the temperature detection unit is equal to the predetermined temperature value.

Description

Power test system

The invention relates to a power supply test system, in particular to a power supply test system capable of accurately adjusting the temperature of a test environment.

As the "power system" of PC (Personal Computer), the power system provides the necessary power for the motherboard, keyboard, mouse, system clock, software switch, and remote wake-up of the PC network. The performance of the power system is to improve the PC. One of the keys to the availability and reliability of the complete system.

Therefore, it is especially necessary to carry out rigorous testing on the PC power supply. Usually, the power supply needs to perform a Burn In test. The so-called Burn In test is to verify the power supply to be tested in the test box. The load state of the power supply to be tested at different ambient temperatures. The conventional burning machine test box uses a heating resistor to heat the power supply to be tested, and the heating speed is slow and the temperature control is inaccurate.

In view of the above, it is necessary to provide a power supply test system that can precisely adjust the temperature of the test environment and heat up quickly.

A power test system for performing a burn-in test on a power supply system, the power test system comprising a switch module, a temperature sensing unit, a control module and a heating and cooling module, the switch module is controlled The module inputs a preset temperature value, the temperature sensing unit senses the temperature signal at the location of the power supply, and sends the sensed temperature signal to the control module, when the temperature sensing unit senses When the temperature is lower than the preset temperature, the control module sends a first control signal to the heating and cooling module, and the heating and cooling module heats up the position of the power supply, when the temperature sensing unit senses When the temperature is higher than the preset temperature, the control module sends a second control signal to the heating and cooling module, and the heating and cooling module cools the position of the power supply until the temperature sensing unit senses The temperature is equal to the preset temperature.

Compared with the prior art, the power test system sends a first control signal to the heating and cooling module by using the control module, and the heating and cooling module heats up the position of the power supply, and the control module issues a The second control signal is sent to the heating and cooling module, and the heating and cooling module cools the position of the power supply until the temperature sensed by the temperature sensing unit is equal to the preset temperature, and the power testing system realizes the test environment. The temperature is precisely adjusted and the heating speed is fast.

Referring to FIG. 1, a preferred embodiment of the power test system of the present invention is used to perform a burn-in test on a power supply 810, which is placed in a test box 800 for testing. The power test system includes a switch module 100, a temperature sensing unit 200, a control module 300, a heating and cooling module 400, a decoding module 500, a display module 600, and a power supply module 700. The switch module 100 inputs a preset temperature value to the control module 300. The temperature sensing unit 200 and the heating and cooling module 400 are placed in the test box 800. The temperature sensing unit 200 senses the temperature signal in the test box 800 and sends the sensed temperature signal to the control module 300. When the temperature sensed by the temperature sensing unit 200 is lower than the preset temperature, the control module 300 sends a first control signal to the heating and cooling module 400, and the heating and cooling module 400 performs the test box 800. Warm up. When the temperature sensed by the temperature sensing unit 200 is higher than the preset temperature, the control module 300 sends a second control signal to the heating and cooling module 400, and the heating and cooling module 400 performs the test box 800. The temperature is lowered until the temperature sensed by the temperature sensing unit 200 is equal to the preset temperature. The power supply module 700 provides an operating voltage for the heating and cooling module 400.

Referring to FIG. 2 to FIG. 4 , the switch module 100 includes a plurality of button switches S0 S S9 . The control module 300 includes a microcontroller 310 and a single pole double throw switch S10. The microcontroller 310 includes a plurality of first control signal output terminals PA0, PA2, PA4, PA6, a plurality of second control signal output terminals PA1, PA3, PA5, PA7, a serial data signal output terminal PB0, and a clock signal output terminal. PB1, a first switching output terminal PB2, a second switching output terminal PB3, a temperature signal input terminal PC0, and a plurality of data registration terminals PC1~PC7. The single pole double throw switch S10 includes a first end, a second end and a third end. The temperature sensing unit 200 sends the sensed temperature signal to the control module 300 via the temperature signal input terminal PC0. One of the button switches S0 and S5 is electrically connected to the data registration terminal PC1. One of the button switches S1 and S6 is electrically connected to the data registration terminal PC2. One of the button switches S2 and S7 is electrically connected to the data registration terminal PC3. One of the button switches S3 and S8 is electrically connected to the data registration terminal PC4. One of the button switches S4 and S9 is electrically connected to the data registration terminal PC5. The other ends of the button switches S0~S4 are electrically connected to the data registration end PC6. The other end of the button switch S5~S9 is electrically connected to the data registration end PC7.

The heating and cooling module 400 includes a plurality of relay control units 410 and a heating and cooling unit 420. Each of the relay control units 410 includes a first coil unit M1, a second coil unit M2, a first switch unit K1, a second switch unit K2, a third switch unit K3, and a fourth switch unit K4. One end of each of the first coil units M1 is electrically connected to the first control signal output terminals PA0, PA2, PA4, and PA6 to receive the first control signal, and the other end of each of the first coil units M1 receives a first DC voltage. One end of each of the first switch unit K1 and the second switch unit K2 is electrically connected to the power supply module 800 to receive a second DC voltage. One end of each of the first switching units K1 is electrically connected to the anode of the second DC voltage, and one end of each of the second switching units K2 is electrically connected to the cathode of the second DC voltage. The other ends of each of the first switch unit K1 and the second switch unit K2 are electrically connected to the corresponding heating and cooling unit 420, respectively.

One end of each second coil unit M2 is electrically connected to the second control signal output terminals PA1, PA3, PA5, PA7 to receive the second control signal, and the other end of each second coil unit M2 receives the first DC voltage. One end of each of the third switching units K3 is electrically connected to the anode of the second DC voltage, and one end of each of the fourth switching units K4 is electrically connected to the anode of the second DC voltage. The other ends of each of the third switch unit K3 and the fourth switch unit K4 are electrically connected to the corresponding heating and cooling unit 420, respectively. The first DC voltage has a magnitude of +5V.

The decoding module 500 includes a plurality of shift register U0~U3, and each shift register U0~U3 includes two serial data signal input terminals a1, a2, a clock signal input terminal a3, and a plurality of digital signal output terminals. B1~b8. The serial data signal input terminals a1 and a2 of the shift register U0 are electrically connected to the serial data signal output terminal PB0 of the microcontroller 310 to receive the temperature digital signal sensed by the temperature sensing unit 100. The serial data signal input terminals a1 and a2 of the shift register U1 are electrically connected to the digital signal output terminal b8 of the shift register U0. The serial data signal input terminals a1 and a2 of the shift register U2 are electrically connected to the digital signal output terminal b8 of the shift register U1. The serial data signal input terminals a1 and a2 of the shift register U3 are electrically connected to the digital signal output terminal b8 of the shift register U2. The clock signal input terminal a3 of the shift register U0~U3 is electrically connected to the clock signal output terminal PB1 of the microcontroller 310 to receive the clock signal. The first end and the second end of the single-pole double-throw switch S10 are electrically connected to the first switching output terminal PB2 and the second switching output terminal PB3 of the microcontroller 310 respectively, and the third end of the single-pole double-throw switch S10 is electrically connected. The clock signal input terminal a3 of the shift register U0~U3 is connected.

The display module 600 includes a plurality of eight-segment digital tubes D0-D3, and each of the eight-segment digital tubes D0-D3 includes a plurality of digital signal input terminals c1-c8. The digital signal input terminals c1 to c8 of each eight-segment digital tube D0~D3 are electrically connected to the digital signal output terminals b1~b8 of the corresponding shift register U0~U3 to receive the decoded temperature digital signal.

The power supply module 700 includes a plurality of step-down circuits 710 and a rectifier circuit 720. Each buck circuit 710 includes a transformer. Each rectifier circuit 720 includes four diodes connected end to end. Each step-down circuit 710 receives an AC voltage of 220V and outputs the AC voltage to an AC voltage of 16V. Each rectifier circuit 720 receives an AC voltage of 16V and converts it into a second DC voltage of +16V to supply power to the corresponding heating and cooling module 400.

In operation, the power supply 810 to be tested is placed in the test box 800. The preset temperature value is input to the microcontroller 310 by pressing the button switches S0 S S9, wherein the button switches respectively represent nine numbers from 0 to 9. The temperature sensing unit 200 senses the temperature signal in the test box 800 and sends the sensed temperature signal to the microcontroller 310 via the temperature signal input terminal PC0. The microcontroller 310 compares the temperature signal sensed by the temperature sensing unit 200 with a preset temperature. When the temperature sensing unit 200 senses that the temperature in the test box 800 is lower than the preset temperature, the second control signal output terminals PA1, PA3, PA5, and PA7 of the microcontroller 310 emit a second control signal with a low potential. The corresponding second coil unit M2 is given. The second coil unit M2 is energized and sucks the corresponding third switch unit K3 and fourth switch unit K4. The corresponding heating and cooling unit 420 receives the reversed second DC voltage and generates heat.

The heating and cooling unit 420 generates heat to gradually increase the temperature in the test box 800. When the temperature sensing unit 200 senses that the temperature in the test box 800 is higher than a preset temperature, the first control signal output of the microcontroller 310 is output. The terminals PA0, PA2, PA4, and PA6 emit a first control signal of a low potential to the corresponding first coil unit M1. The first coil unit M1 is energized and sucks the corresponding first switch unit K1 and second switch unit K2. The heating and cooling unit 420 receives the second DC voltage in the forward direction and cools the inside of the test box 800 until the temperature sensed by the temperature sensing unit 200 is equal to the preset temperature. At this time, the corresponding control signal output terminals PA0~PA7 of the microcontroller 310 emit a high potential control signal to disconnect one or several of the corresponding switch units K1~K4. The temperature in the test box 800 remains stable under the heating and cooling of the corresponding heating and cooling unit 420, and the temperature in the test box 800 is equal to the preset temperature.

During the test, when the single-pole double-throw switch S10 is toggled to electrically connect the first end and the third end, the control module 300 decodes the preset temperature value by the decoding module 500 and displays it on the display mode. When the single-pole double-throw switch S10 is toggled to electrically connect the second end and the third end, the control module 300 decodes and displays the instantaneous temperature in the test box 800 through the decoding module 500. Display module 600.

The power supply test system of the present invention sends a first control signal to the heating and cooling module 400 by the control module 300, and the heating and cooling module 400 heats the inside of the test box 800. The control module 300 sends a second control signal to the heating and cooling module 400. The heating and cooling module cools the inside of the test box 800 until the temperature sensed by the temperature sensing unit 200 is equal to a preset temperature. The system achieves precise adjustment of the temperature of the test environment and fast heating.

In summary, the present invention is in accordance with the conditions of the invention patent application, and the patent application is filed according to law. The above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art to the spirit of the present invention should be included in the following claims.

100. . . Switch module

200. . . Temperature sensing unit

300. . . Control module

310. . . Microcontroller

400. . . Heating and cooling module

410. . . Relay control unit

420. . . Heating and cooling unit

500. . . Decoding module

600. . . Display module

700. . . Power supply module

710. . . Buck circuit

720. . . Rectifier circuit

800. . . Test box

810. . . Power Supplier

S0~S9. . . power switch button

S10. . . Single pole double throw switch

M1. . . First coil unit

M2. . . Second coil unit

K1. . . First switch unit

K2. . . Second switching unit

R3. . . Third switch unit

K4. . . Fourth switch unit

U0~U3. . . Shift register

D0~D3. . . Eight-segment digital tube

1 is a block diagram of a preferred embodiment of a power test system of the present invention. The power test system includes a switch module, a temperature sensing unit, a control module, a heating and cooling module, a decoding module, and a display. Module and a power supply module.

2 is a circuit diagram of the electrical connection of the switch module, the temperature sensing unit and the control module of FIG.

3 is a circuit diagram of the electrical connection of the heating and cooling module and the power supply module of FIG.

4 is a circuit diagram of the electrical connection of the decoding module and the display module in FIG.

100. . . Switch module

200. . . Temperature sensing unit

300. . . Control module

400. . . Heating and cooling module

500. . . Decoding module

600. . . Display module

700. . . Power supply module

800. . . Test box

810. . . Power Supplier

Claims (10)

A power test system for performing a burn-in test on a power supply system, the power test system comprising a switch module, a temperature sensing unit, a control module and a heating and cooling module, the switch module is controlled The module inputs a preset temperature value, the temperature sensing unit senses the temperature signal at the location of the power supply, and sends the sensed temperature signal to the control module, when the temperature sensing unit senses When the temperature is lower than the preset temperature, the control module sends a first control signal to the heating and cooling module, and the heating and cooling module heats up the position of the power supply, when the temperature sensing unit senses When the temperature is higher than the preset temperature, the control module sends a second control signal to the heating and cooling module, and the heating and cooling module cools the position of the power supply until the temperature sensing unit senses The temperature is equal to the preset temperature. The power supply test system of claim 1, wherein the control module comprises a microcontroller, the microcontroller includes at least one second control signal output, and the heating and cooling module includes at least one first relay a control unit and a heating and cooling unit, the first relay control unit includes a first coil unit, a first switch unit and a second switch unit, and the first coil unit is electrically connected to the second control signal output end for receiving a second control signal, the other end of the first coil unit receives a first DC voltage, one end of the first switch unit is electrically connected to a positive pole of a second DC voltage, and one end of the second switch unit is electrically connected to the second DC voltage The anode of the first switch unit and the second switch unit are electrically connected to the heating and cooling unit, respectively. The power supply test system of claim 2, wherein the microcontroller further includes at least one first control signal output, the first relay control unit further comprising a second coil unit, a third switch unit, and a fourth switching unit, one end of the second coil unit is electrically connected to the first control signal output end to receive the first control signal, the other end of the second coil unit receives the first DC voltage, and the third switch unit is electrically connected at one end The anode of the second DC voltage is electrically connected to the anode of the second DC voltage, and the other ends of the third switch unit and the fourth switch unit are electrically connected to the heating and cooling unit. The power supply test system of claim 3, wherein the switch module comprises at least one first switch and a second switch, the microcontroller further comprising at least a first temperature signal input end and a second temperature a signal input end and a third temperature signal input end, wherein the first switch and the second switch are respectively electrically connected to the first temperature signal input end, and the other end of the first switch and the second switch are electrically connected to the second Temperature signal input and third temperature signal input. The power supply test system of claim 4, wherein the power test system further comprises a decoding module electrically connected to the control module, and a display module electrically connected to the decoding module, the decoding mode The group decodes the temperature signal sensed by the temperature sensing unit into a temperature value and displays it on the display module. The power supply test system of claim 5, wherein the microcontroller further comprises a serial data signal output terminal, the decoding module comprising at least a first shift register and a second shift temporary Each of the shift registers includes two serial data signal input terminals and a plurality of digital signal output terminals, and the serial data signal output terminal is electrically connected to the two serial data signal input terminals of the first shift register And outputting the temperature signal, the two serial data signal input ends of the second shift register are electrically connected to the digital signal output end of the first shift register to receive the temperature signal. The power supply test system of claim 6, wherein the display module comprises at least a first digital tube and a second digital tube, each digital tube comprises a plurality of digital signal inputs, the first shift is temporarily The plurality of digital signal output terminals of the memory are electrically connected to the plurality of digital signal input ends of the first digital tube to output a temperature signal, and the plurality of digital signal output terminals of the second shift register are electrically connected to the second digital tube A plurality of digital signal inputs are used to output a temperature signal. The power supply test system of claim 6, wherein the control module further comprises a single pole double throw switch, the single pole double throw switch comprising a first end, a second end and a third end, the micro The controller further includes a first switching output end and a second switching output end, each shift register further includes a clock signal input end, and the first end and the second end of the single-pole double-throw switch are respectively electrically connected a first switching output end of the microcontroller and a second switching output end, wherein the third end of the single-pole double-throw switch is electrically connected to the clock signal input end of the first shift register and the second shift register . The power supply test system of claim 8, wherein when the single-pole double-throw switch is toggled to electrically connect the first end and the third end, the control module sets the preset temperature value through the decoding module. Decoded and displayed on the display module. When the single-pole double-throw switch is toggled to electrically connect the second end and the third end, the control module decodes the instantaneous temperature at the position of the power supply by the decoding module. And displayed on the display module. The power supply test system of any one of claims 1 to 9, wherein the power test system further includes a power supply module that converts an alternating current voltage into the second direct current voltage.