CN104237573B - Charger for mobile phone ATE - Google Patents

Abstract

The mobile phone charger automatic test equipment includes a controller, a test result indicating circuit and a test voltage terminal; the test voltage terminal is used to receive the voltage signal of the circuit board to be tested; the controller is used to compare the voltage signal with the preset voltage threshold range, When the voltage signal is within the preset voltage threshold range, drive the test result indicating circuit to send out an indication signal indicating that the product is qualified; when the voltage signal exceeds the preset voltage threshold range, drive the test result indicating circuit to send out an indication that the product is unqualified Signal. The above-mentioned invention does not require human participation in the voltage test process of the mobile phone charger, automatically reads the voltage of the circuit board to be tested, automatically judges and compares, and automatically gives a result prompt, which is intuitive, fast, objective and standardized, with high test accuracy and high test efficiency.

Description

Mobile phone charger automatic test equipment

technical field

The invention relates to an automatic testing device for a mobile phone charger.

Background technique

The mobile phone charger manufacturing process includes a voltage testing process. At present, the operator generally tests the voltage of the charger manually, and compares it with the standard value to judge whether it is qualified. The whole process requires human participation, which is highly subjective. For new employees, because they are not skilled, it is easy to measure incorrectly due to irregular operation. Accurate, poor test results. In addition, since only one test can be performed, the test efficiency is low.

Contents of the invention

Aiming at the deficiencies of the prior art, the object of the present invention is to provide a mobile phone charger automatic test equipment that can solve the above technical problems.

To achieve the above object, the present invention adopts the following technical solutions:

An automatic test device for a mobile phone charger, which includes a controller, a test result indicating circuit and a test voltage terminal;

The test voltage terminal is used to receive the voltage signal of the circuit board to be tested; the controller is used to compare the voltage signal with the preset voltage threshold range, and when the voltage signal is within the preset voltage threshold range, drive the test result indicating circuit to send out An indication signal indicating that the product is qualified; when the voltage signal exceeds the preset voltage threshold range, the test result indicating circuit is driven to send an indication signal indicating that the product is unqualified.

Preferably, the mobile phone charger automatic test equipment includes several test voltage terminals, each test voltage terminal is used to receive the voltage signal of a corresponding circuit board to be tested; the controller is used to compare the voltage signals of each test voltage terminal with the preset Compared with the voltage threshold range, when all the voltage signals are within the preset voltage threshold range, the test result indicator circuit is driven to send an indication signal indicating that the product is qualified; when at least one voltage signal exceeds the preset voltage threshold range, the test is driven The result indication circuit sends out an indication signal indicating that the product is unqualified.

Preferably, the mobile phone charger automatic test equipment also includes a first electronic switch circuit, a fixture and a cylinder; the control end of the first electronic switch circuit is connected to the controller, the input end of the first electronic switch circuit is connected to an AC power supply, and the first electronic switch circuit is connected to the AC power supply. An output end of an electronic switch circuit is connected to the air cylinder; the controller is used to drive the first electronic switch circuit to be turned on or off, so that the air cylinder drives the clamp to clamp or loosen the circuit board to be tested.

Preferably, the mobile phone charger automatic test equipment also includes a second electronic switch circuit, the control end of the second electronic switch circuit is connected to the controller, the input end of the second electronic switch circuit is connected to the AC power supply, and the second electronic switch circuit The output end of the clamp is connected to the fixture; the controller is used to drive the second electronic switch circuit to be turned on or off, so that the AC power supplies power through the fixture or does not supply power to the circuit board to be tested.

Preferably, the first electronic switch circuit includes a triode, a first resistor, a second resistor and an electromagnetic relay; the base of the triode is connected to the first control pin of the controller through the first resistor, the emitter of the triode is grounded, and the The collector is connected to a DC power supply through the electromagnetic coil of the electromagnetic relay and the second resistor, the static contact of the electromagnetic relay is connected to the cylinder, and the movable contact of the electromagnetic relay is connected to an AC power supply.

Preferably, the second electronic switch circuit includes a triode, a first resistor, a second resistor and an electromagnetic relay; the base of the triode is connected to the second control pin of the controller through the first resistor, the emitter of the triode is grounded, and the collector of the triode The electrodes are connected to a DC power supply through the electromagnetic coil of the electromagnetic relay and the second resistor; the static contact of the electromagnetic relay is connected to the fixture, and the movable contact of the electromagnetic relay is connected to the AC power supply.

Preferably, the mobile phone charger automatic test equipment includes a first test voltage terminal to a sixth test voltage terminal electrically connected to the controller, and the test result indicating circuit includes a first resistor to a sixth resistor, a seventh resistor and an eighth resistor and the first light emitting diode to the eighth light emitting diode; one end of the first resistor to the sixth resistor is respectively connected to the first drive pin to the sixth drive pin of the controller, and the other ends of the first resistor to the sixth resistor are respectively connected to the first The cathodes of one light-emitting diode to the sixth light-emitting diode, and the anodes of the first light-emitting diode to the sixth light-emitting diode are all connected to a DC power supply; one end of the seventh resistor and the eighth resistor is respectively connected to the eighth drive pin and the seventh drive pin of the controller. Drive pins, the other end of the seventh resistor and the eighth resistor are respectively connected to the cathodes of the seventh light emitting diode and the eighth light emitting diode, and the anodes of the seventh light emitting diode and the eighth light emitting diode are connected to the DC power supply; When within the preset voltage threshold range, the first drive pin to the sixth drive pin and the eighth drive pin of the controller all output high-level signals, and the seventh drive pin of the controller outputs a low-level signal; When at least one voltage signal exceeds the preset voltage threshold range, the corresponding drive pin of the controller outputs a low-level signal, the eighth drive pin outputs a low-level signal, and the other drive pins output a high-level signal.

Preferably, the test result indicates that the circuit includes a buzzer, a triode, a first resistor and a second resistor; the base of the triode is connected to the ninth drive pin of the controller through the first resistor, and the emitter of the triode is connected to the buzzer through the buzzer. The device is grounded, and the collector of the triode is connected to a DC power supply through a second resistor.

Preferably, the mobile phone charger automatic test equipment also includes a restart switch and a resistor; the DC power supply is grounded through the resistor and the restart switch in turn, and the restart pin of the controller is connected between the resistor and the restart switch.

The beneficial effects of the present invention are at least as follows:

The above-mentioned invention does not require human participation in the voltage test process of the mobile phone charger, automatically reads the voltage of the circuit board to be tested, automatically judges and compares, and automatically gives a result prompt, which is intuitive, fast, objective and standardized, with high test accuracy and high test efficiency.

In addition, this device can simultaneously test the voltage of multiple mobile phone charger products, which greatly improves the test efficiency.

Furthermore, the device can automatically clamp the circuit board to be tested, making the test more stable and the test effect better.

Description of drawings

Fig. 1 is the electrical structure connection diagram of the preferred embodiment of the automatic test equipment of the mobile phone charger of the present invention.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described:

Please refer to FIG. 1 , the present invention relates to an automatic test equipment for a mobile phone charger, and its preferred embodiment includes a controller U1 , a test result indicating circuit 20 and a test voltage terminal.

The test voltage terminal is used to receive the voltage signal of the circuit board to be tested; the controller U1 is used to compare the voltage signal with the preset voltage threshold range, and drive the test result indicating circuit when the voltage signal is within the preset voltage threshold range 20 sends an indication signal indicating that the product is qualified; when the voltage signal exceeds the preset voltage threshold range, the test result indicating circuit 20 is driven to send an indication signal indicating that the product is unqualified.

The above-mentioned invention does not require human participation in the voltage test process of the mobile phone charger, automatically reads the voltage of the circuit board to be tested, automatically judges and compares, and automatically gives a result prompt, which is intuitive, fast, objective and standardized, with high test accuracy and high test efficiency.

Preferably, the mobile phone charger automatic test equipment includes several test voltage terminals, and each test voltage terminal is used to receive a corresponding voltage signal of a circuit board to be tested; the controller U1 is used to compare the voltage signals of each test voltage terminal with the The preset voltage threshold range is compared, and when all the voltage signals are within the preset voltage threshold range, the test result indicating circuit 20 is driven to send an indication signal indicating that the product is qualified; when at least one voltage signal exceeds the preset voltage threshold range, The test result indication circuit 20 is driven to send out an indication signal prompting that the product is unqualified.

In this way, the voltage test can be performed on multiple mobile phone charger products at the same time, which greatly improves the test efficiency.

Preferably, the automatic test equipment for the mobile phone charger further includes a first electronic switch circuit 30, a fixture and an air cylinder. The control end of the first electronic switch circuit 30 is connected to the controller U1, the input end of the first electronic switch circuit 30 is connected to an AC power supply, and the output end of the first electronic switch circuit 30 is connected to the cylinder. The controller U1 is used to drive the first electronic switch circuit 30 to be turned on or off, so that the air cylinder drives the clamp to clamp or loosen the circuit board to be tested. For example, before the test, the controller U1 outputs a high-level signal to the first electronic switch circuit 30, so as to make the connection between the output terminal and the input terminal of the first electronic switch circuit 30, and then make the voltage of the AC power pass through the first electronic switch circuit 30. An electronic switching circuit 30 supplies power to the cylinder so that the cylinder clamps the circuit board to be tested.

In this way, the device can automatically clamp the circuit board to be tested, making the test more stable and the test effect better.

Further, the mobile phone charger automatic test equipment also includes a second electronic switch circuit 10, the control terminal of the second electronic switch circuit 10 is connected to the controller U1, the input terminal of the second electronic switch circuit 10 is connected to the AC power supply, and the second electronic switch circuit 10 is connected to the AC power supply. The output ends of the two electronic switch circuits 10 are connected to the clamp. The controller U1 is used to drive the second electronic switch circuit 10 to be turned on or off, so that the AC power supplies or does not supply power to the circuit board to be tested through the fixture. For example, when starting the test, the controller U1 outputs a high-level signal to the second electronic switch circuit 10, so that the output terminal and the input terminal of the second electronic switch circuit 10 are conducted, and then the voltage of the AC power supply is sequentially Power is supplied to the circuit board to be tested through the second electronic switch circuit 10 and the fixture, so that the circuit board to be tested generates the above-mentioned voltage signal.

In this way, the device can automatically control the power supply of the circuit board to be tested, so that the test is more stable and the test effect is better.

In this embodiment, the first electronic switch circuit 30 includes a triode Q3, a resistor R34, a resistor R33 and an electromagnetic relay J1. The base of the transistor Q3 is connected to the first control pin P2.6 of the controller U1 through a resistor R34, the emitter of the transistor Q3 is grounded, and the collector of the transistor Q3 is connected to the resistor R33 through the electromagnetic coil of the electromagnetic relay J1. The current power supply VCC, the static contact of the electromagnetic relay J1 is connected to the cylinder, and the moving contact of the electromagnetic relay J1 is connected to the AC power supply.

The second electronic switch circuit 10 includes a triode Q4, a resistor R24, a resistor R39 and an electromagnetic relay J2. The base of the transistor Q4 is connected to the second control pin P1.1 of the controller U1 through the resistor R24, the emitter of the transistor Q4 is grounded, and the collector of the transistor Q4 is connected to the DC power supply VCC through the electromagnetic coil of the electromagnetic relay J2 and the resistor R39 . The static contact of the electromagnetic relay J2 is connected to the fixture, and the movable contact of the electromagnetic relay J2 is connected to the AC power supply.

In this embodiment, the mobile phone charger automatic test equipment includes a first test voltage terminal DC1 to a sixth test voltage terminal DC6 electrically connected to the controller U1, and the test result indicating circuit 20 includes resistors R19 to R24, resistors R31 and The resistor R32 and the first light emitting diode D1 to the eighth light emitting diode D8. One end of the resistor R19 to the resistor R24 is respectively connected to the first drive pin P2.0 to the sixth drive pin P2.5 of the controller U1, and the other end of the resistor R19 to the resistor R24 is connected to the first light emitting diode D1 to the sixth light emitting diode respectively. The cathode of the diode D6 and the anodes of the first light emitting diode D1 to the sixth light emitting diode D6 are all connected to the DC power supply VCC. One end of the resistor R31 and the resistor R32 are respectively connected to the eighth drive pin P0.7 and the seventh drive pin P0.6 of the controller U1, and the other end of the resistor R31 and the resistor R32 are respectively connected to the seventh light-emitting diode D7 and the eighth light-emitting diode D7. The cathode of the diode D8, the anodes of the seventh LED D7 and the eighth LED D8 are all connected to the DC power supply. When all the voltage signals are within the preset voltage threshold range, the first drive pin P2.0 to the sixth drive pin P2.5 and the eighth drive pin P0.7 of the controller U1 output high-level signals , so that the first light-emitting diode D1 to the sixth light-emitting diode D6 and the seventh light-emitting diode D7 do not emit light, the seventh drive pin P0.6 of the controller U1 outputs a low-level signal, so that the eighth light-emitting diode D8 emits light, to indicate that all products are qualified. When at least one voltage signal exceeds the preset voltage threshold range, the corresponding drive pin of the controller U1 outputs a low-level signal, the eighth drive pin P0.7 outputs a low-level signal, and the other drive pins output high level signal. For example, the voltage signal of the first voltage signal terminal DC1 exceeds the preset voltage threshold range, and the voltage signals of the other voltage signal terminals are all within the preset voltage threshold range. At this time, the first drive pin P2. The eight driving pins P0.7 all output low-level signals, and the second driving pin P2.1 to the sixth driving pin P2.5 and the seventh driving pin P0.6 all output high-level signals, so that the One light-emitting diode D1 and the seventh light-emitting diode D7 emit light, and the rest of the light-emitting diodes do not emit light. Lighting of the first light-emitting diode D1 intuitively indicates that the product at the first voltage signal terminal DC1 is unqualified. The light emitting of the seventh light emitting diode D7 indicates that the test is not qualified.

In this embodiment, the test result indicating circuit 20 further includes a buzzer BZ, a transistor Q1, a resistor R26 and a resistor R25. The base of the transistor Q1 is connected to the ninth driving pin P1.0 of the controller U1 through the resistor R26, the emitter of the transistor Q1 is grounded through the buzzer BZ, and the collector of the transistor Q1 is connected to the DC power supply VCC through the resistor R25. If any path is found to be abnormal, the ninth drive pin P1.0 of the controller U1 outputs a high-level signal, so that the transistor Q1 is turned on, and the buzzer BZ makes a sound to remind the operator to take out the unqualified product.

The mobile phone charger automatic test equipment also includes a restart switch K and a resistor R9. The DC power supply VCC is grounded sequentially through the resistor R9 and the reset switch K, and the reset pin RESET of the controller U1 is connected between the resistor R9 and the reset switch K. The operator can start the test of each batch of products by opening and closing the restart switch K, which is very convenient.

For those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and ideas described above, and all these changes and modifications should fall within the protection scope of the claims of the present invention.

Claims (6)

1. a kind of charger for mobile phone ATE, it is characterised in that：It includes controller, test result indicating circuit and survey Examination voltage end；

Test voltage end is used to receive the voltage signal of circuit board to be tested；The controller is used for voltage signal and predeterminated voltage Threshold range is compared, and when voltage signal is in the range of predetermined voltage threshold, drives the test result indicating circuit to send The indication signal for indicating product qualified；When voltage signal exceeds predetermined voltage threshold scope, the test result is driven to indicate electricity Road sends the prompting underproof indication signal of product；

Charger for mobile phone ATE also includes the first electronic switching circuit, fixture and cylinder；First electronic cutting is powered-down The control end on road connects the controller, the input connection AC power of first electronic switching circuit, first electronic switch The output end of circuit connects the cylinder；The controller is used to drive the first electronic switching circuit on or off, so as to bring about the desired sensation Cylinder drives the clamp or unclamps circuit board to be tested；

First electronic switching circuit includes triode, first resistor, second resistance and electromagnetic relay；The base stage of triode passes through First resistor connects the first controlling switch of controller, and the grounded emitter of the triode, the colelctor electrode of the triode passes through to be somebody's turn to do The magnet coil of electromagnetic relay and the second resistance connect a dc source, and the stationary contact of the electromagnetic relay connects the gas Cylinder, the movable contact connection AC power of the electromagnetic relay；

The charger for mobile phone ATE includes being electrically connected with the first test voltage end to the 6th test voltage of controller End, the test result indicating circuit includes first resistor to the 6th resistance, the 7th resistance and the 8th resistance and first luminous two Pole pipe is to the 8th light emitting diode；First resistor to one end of the 6th resistance connects the first driving pin of controller to the respectively Six drive pin, and first resistor to the other end of the 6th resistance connects the first light emitting diode to the 6th light emitting diode respectively Negative electrode, the first light emitting diode to the anode of the 6th light emitting diode is all connected with a dc source；7th resistance and the 8th resistance One end connect the 8th driving pin of controller and the 7th respectively and drive pin, the other end point of the 7th resistance and the 8th resistance Not Lian Jie the 7th light emitting diode and the 8th light emitting diode negative electrode, the sun of the 7th light emitting diode and the 8th light emitting diode Pole is all connected with the dc source；When all voltage signals are in the range of predetermined voltage threshold, the first driving of controller is drawn Pin to the 6th driving pin and the 8th driving pin exports high level signal, the 7th driving pin output low level of controller Signal；When an at least voltage signal exceeds predetermined voltage threshold scope, the correspondence of the controller drives pin output low level Signal, its 8th driving pin output low level signal, remaining drives pin to export high level signal.

2. charger for mobile phone ATE as claimed in claim 1, it is characterised in that：The charger for mobile phone is tested automatically Equipment includes some test voltage ends, and each test voltage end is used to receive the voltage signal of a corresponding circuit board to be tested； The controller is used to respectively be compared the voltage signal at each test voltage end with predetermined voltage threshold scope, in all voltages When signal is in the range of predetermined voltage threshold, drives the test result indicating circuit to send the instruction for indicating product qualified and believe Number；When an at least voltage signal exceeds predetermined voltage threshold scope, the test result indicating circuit is driven to send prompting product Underproof indication signal.

3. charger for mobile phone ATE as claimed in claim 1, it is characterised in that：Automatically test sets charger for mobile phone Standby also to include the second electronic switching circuit, the control end of second electronic switching circuit connects the controller, second electronic cutting The input connection AC power on powered-down road, the output end of second electronic switching circuit connects the fixture；The controller is used for The second electronic switching circuit on or off is driven, to cause AC power to be powered by the fixture or not supply electricity to be tested Circuit board.

4. charger for mobile phone ATE as claimed in claim 3, it is characterised in that：The second electronic switching circuit bag Include triode, first resistor, second resistance and electromagnetic relay；The base stage of triode connects the of controller by first resistor Two controlling switch, the grounded emitter of triode, the colelctor electrode of triode by the magnet coil of electromagnetic relay and this second Resistance connects a dc source；The stationary contact of the electromagnetic relay connects the fixture, and the movable contact connection of the electromagnetic relay should AC power.

5. charger for mobile phone ATE as claimed in claim 1 or 2, it is characterised in that：The test result indicates electricity Road includes buzzer, triode, first resistor and second resistance；The base stage of the triode connects controller by first resistor 9th drives pin, the emitter stage of triode to be grounded by the buzzer, and the colelctor electrode of triode connects one by second resistance Dc source.

6. charger for mobile phone ATE as claimed in claim 1 or 2, it is characterised in that：Charger for mobile phone is surveyed automatically Examination equipment also includes reset switch and resistance；Dc source passes sequentially through resistance and reset switch ground connection, and restarting for controller is drawn Pin is connected between the resistance and reset switch.