CN103454508A - Four-channel overcurrent and overvoltage protecting tester - Google Patents
Four-channel overcurrent and overvoltage protecting tester Download PDFInfo
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- CN103454508A CN103454508A CN2012101728286A CN201210172828A CN103454508A CN 103454508 A CN103454508 A CN 103454508A CN 2012101728286 A CN2012101728286 A CN 2012101728286A CN 201210172828 A CN201210172828 A CN 201210172828A CN 103454508 A CN103454508 A CN 103454508A
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Abstract
A four-channel overcurrent and overvoltage protecting tester comprises a shell (10), at least four detecting interfaces (20), a detecting circuit (3), a control circuit (40) and a power portion (50), wherein the detecting interfaces (20) are arranged on the surface of the shell (10); the detecting circuit (30) is arranged in the shell (10); the control circuit (40) controls the detecting circuit; the power portion (50) is connected with the control circuit (40); and the detecting interfaces (20) are respectively connected with the detecting circuit (30) and the control circuit (40). Because the four-channel overcurrent and overvoltage protecting tester can simultaneously test four products, the corresponding testing requirement can be met even if a staff does not poke a twistor switch, and the testing speed is greatly increased, and can be 8 times the speed of manual testing for a single product. The testing speed is increased by 8 times, the fatigue of the staff is reduced by 80%, and production cost is greatly saved.
Description
Technical field
The present invention relates to detection technique, particularly miniwatt adapter PCBA tests automatically.
Background technology
Detection for miniwatt adapter PCBA plate is all generally that single-piece is detected at present, and this detection, because the wiring complexity is loaded down with trivial details, is relatively wasted time and energy, so efficiency is not high, during mass detection, needs large quantities of testing staff, and efficiency is lower.
Summary of the invention
The invention provides a kind of four-way over-current over-voltage protection tester, adopt and can test 4 PCBA, and testing procedure one step completes, solve the low technical matters of testing efficiency in prior art simultaneously.
The present invention comprises housing, at least four detection interfaces that arrange at surface of shell for this four-way over-current over-voltage protection tester provided is provided; also comprise the testing circuit be arranged in housing, the power supply unit of controlling the control circuit of this testing circuit and connecting described control circuit, described at least four detection interfaces connect respectively described testing circuit and control circuit.
Because can test 4 products simultaneously, dial and turn round sub-switch and reach corresponding test request without the employee in test, so test speed improves greatly, can reach 8 times of separate unit manual testing.Test speed has improved 8 times, and employee's fatigue strength has reduced by 80%, greatly for producing, has saved cost.
The accompanying drawing explanation
Fig. 1 is the outboard profile of tester.Fig. 2 is the front end figure of tester.Fig. 3 is front end product test frame figure.Fig. 4 is the tester circuit theory diagram.Fig. 5 is the test philosophy wiring diagram.
Embodiment
In conjunction with above-mentioned accompanying drawing 1 to accompanying drawing 5, the specific embodiment of the invention schemes are described.
At least four detection interfaces 20 that this four-way over-current over-voltage protection tester comprises housing 10, arranges on housing 10 surfaces; also comprise the testing circuit 30 be arranged in housing 10, the power supply unit 50 of controlling the control circuit 40 of this testing circuit and connecting described control circuit 40; described at least four detection interfaces 20 connect respectively described testing circuit 30 and control circuit 40; this tester also comprises display unit 60 and the push-button unit 70 that connects respectively described testing circuit 30, and described display unit 60 is 12864 type LCD display.Described testing circuit 30 connects voltage sample unit 31 and the current sampling unit 32 that respectively detects interface 20, also comprise the D/A switch unit 33 that is connected with described voltage sample unit 31 and current sampling unit 32, with the single-chip microcomputer U1 that this D/A switch unit 33 is connected, also comprise that connection respectively detects the A/D converter 34 of interface 20 and described single-chip microcomputer U1.Described testing circuit 30 also includes band live road 35 and the second driving circuit 36, described band live road 35 is connected on described respectively the detection between interface 20 and current sampling unit 32, and described the second driving circuit 36 is connected between described band live road 35 and A/D converter 34.Described control circuit 40 comprises being connected in and respectively detects on interface 20, the metal-oxide-semiconductor equated with detection interface quantity, the MOSEFT pipe that described metal-oxide-semiconductor is 60A, the grid parallel connection of each metal-oxide-semiconductor is connected single-chip microcomputer U1 by the short circuit switch unit 41 of series connection with the first driving circuit 42 afterwards, also comprise voltage switch unit 43, these voltage switch unit 43 1 ends connections respectively detect interface 20, an other end connects described the first driving circuit 42, the variable power supply that described power supply unit 50 is, described single-chip microcomputer U1 controls at least two kinds of different voltages of power supply unit 50 inputs by voltage switch unit 43.Described voltage switch unit 43 adopts auxiliary reclay switch test input voltage in parallel, and described at least two kinds of different voltages comprise 90V and 264V.Described D/A switch unit 33 is 24 8 passage A/D chips of LTC2408 type; Described A/D converter 34 is 16 D/A chips of MAX541 type; Single-chip microcomputer U1 is 12C5A60S2 type single-chip microcomputer.
Tester structure division of the present invention comprises head end test shelf structure and testing cassete structure.The testing cassete structure comprises 90VAC, two kinds of voltage input AC sockets of 264VAC, an AC accessory power outlet, 1 12864LCD display screen, 1 hummer, 6 arrange button, 3 LED light, load connects employing 24PIN connector, and test is controlled and adopted the 4PIN connector.The testing jig structure comprises the PCBA rest area of corresponding model, testing power supply input socket, p-wire output, test button, reset key.The testing cassete circuit part comprises that automatic short circuit module, load band carry module, passage control module, model selection, demonstration as a result etc.By button, band is set and carries step number (maximum 9 steps), test pattern (CC and CV), test voltage (maximum 48V), measuring current (maximum 10A), work step test duration (0.1S-9.9S), product supply voltage (90V and 264V), channel selecting (4 passages), OVP selects (whether optocoupler needs short circuit), can test 4 PCBA simultaneously, one-touchly completes test.The miniwatt adapter usually adopts just humorous formula translation circuit, and circuit adopts optocoupler to feed back to regulate pwm chip usually, if problem has appearred in feedback, the output voltage of product will, with the high-conversion rate output of transformer, exceed the requirement of client to power supply source.So deliberately the short circuit feed back input is brought in the test output voltage and can be produced injury to user's product.The present invention designs a kind of circuit with 4 channel electron load instrument functions, it takes on the load regulation function by the MOSEFT pipe of 4 60A, use MAX541 D/A chip output test parameter signal after amplifier is amplified, the MOSEFT pipe to be controlled, electric current feeds back to the amplifier input end by sampling resistor and the D/A signal is contrasted.The input test voltage of product is changed by the auxiliary reclay of 2 10A, by its action of Single-chip Controlling, the optocoupler short circuit forms 4 passages by the auxiliary reclay of 4 1A, by its action of Single-chip Controlling, voltage, electric current are sent into single-chip microcomputer by 24 8 passage A/D chip image data and are carried out computing.AC90V and AC264V power supply that product is required insert respectively in input socket, and the tester power supply meets AC220V, and the external PCBA testing jig test AC that gives of the AC power supplies of output inputs.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. a four-way over-current over-voltage protection tester; it is characterized in that: this tester comprises housing (10), at least four detection interfaces (20) that arrange on housing (10) surface; also comprise the testing circuit (30) be arranged in housing (10), the power supply unit (50) of controlling the control circuit (40) of this testing circuit and connecting described control circuit (40), described at least four detection interfaces (20) connect respectively described testing circuit (30) and control circuit (40).
2. four-way over-current over-voltage protection tester according to claim 1; it is characterized in that: described testing circuit (30) connects voltage sample unit (31) and the current sampling unit (32) that respectively detects interface (20); also comprise the D/A switch unit (33) that is connected with described voltage sample unit (31) and current sampling unit (32), with the single-chip microcomputer U1 that this D/A switch unit (33) is connected, also comprise that connection respectively detects the A/D converter (34) of interface (20) and described single-chip microcomputer U1.
3. four-way over-current over-voltage protection tester according to claim 2; it is characterized in that: described control circuit (40) comprises being connected in and respectively detects interface (20) metal-oxide-semiconductor upper, that equate with detection interface quantity; the grid parallel connection of each metal-oxide-semiconductor is connected single-chip microcomputer U1 by the short circuit switch unit (41) of series connection with the first driving circuit (42) afterwards; also comprise voltage switch unit (43); these voltage switch unit (43) one ends connections respectively detect interface (20), and an other end connects described the first driving circuit (42).
4. four-way over-current over-voltage protection tester according to claim 2; it is characterized in that: described testing circuit (30) also includes band live road (35) and the second driving circuit (36); described band live road (35) is connected on described respectively the detection between interface (20) and current sampling unit (32), and described the second driving circuit (36) is connected between described band live road (35) and A/D converter (34).
5. four-way over-current over-voltage protection tester according to claim 2, it is characterized in that: this tester also comprises display unit (60) and the push-button unit (70) that connects respectively described testing circuit (30).
6. four-way over-current over-voltage protection tester according to claim 3, it is characterized in that: the variable power supply that described power supply unit (50) is, described single-chip microcomputer U1 controls at least two kinds of different voltages of power supply unit (50) input by voltage switch unit (43).
7. according to the described four-way over-current over-voltage protection of any one in claim 1 to 6 tester, it is characterized in that: described D/A switch unit (33) is 24 8 passage A/D chips of LTC2408 type; Described A/D converter (34) is 16 D/A chips of MAX541 type; Single-chip microcomputer U1 is 12C5A60S2 type single-chip microcomputer.
8. four-way over-current over-voltage protection tester according to claim 3, it is characterized in that: described voltage switch unit (43) adopts auxiliary reclay switch test input voltage in parallel, and described at least two kinds of different voltages comprise 90V and 264V.
9. four-way over-current over-voltage protection tester according to claim 5, it is characterized in that: described display unit (60) is 12864 type LCD display.
10. according to the described four-way over-current over-voltage protection of claim 3 or 8 tester, it is characterized in that: the MOSEFT pipe that described metal-oxide-semiconductor is 60A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210172828.6A CN103454508B (en) | 2012-05-30 | 2012-05-30 | Four-way over-current over-voltage protection tester |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210172828.6A CN103454508B (en) | 2012-05-30 | 2012-05-30 | Four-way over-current over-voltage protection tester |
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| CN103454508A true CN103454508A (en) | 2013-12-18 |
| CN103454508B CN103454508B (en) | 2016-10-05 |
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| CN201210172828.6A Active CN103454508B (en) | 2012-05-30 | 2012-05-30 | Four-way over-current over-voltage protection tester |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792445A (en) * | 2014-01-16 | 2014-05-14 | 厦门立林电气控制技术有限公司 | Fully intelligent electric power overcurrent protection tester |
| CN105467164A (en) * | 2015-12-10 | 2016-04-06 | 国家电网公司 | A discharging rod special-purpose case with an electrical test apparatus |
| CN108680848A (en) * | 2018-06-14 | 2018-10-19 | 山东阅芯电子科技有限公司 | Second grade power circulation test method and device |
| CN105067902B (en) * | 2015-07-07 | 2019-08-16 | 艾德克斯电子（南京）有限公司 | A kind of OVP of extension, short-circuit test circuit and test method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792445A (en) * | 2014-01-16 | 2014-05-14 | 厦门立林电气控制技术有限公司 | Fully intelligent electric power overcurrent protection tester |
| CN105067902B (en) * | 2015-07-07 | 2019-08-16 | 艾德克斯电子（南京）有限公司 | A kind of OVP of extension, short-circuit test circuit and test method |
| CN105467164A (en) * | 2015-12-10 | 2016-04-06 | 国家电网公司 | A discharging rod special-purpose case with an electrical test apparatus |
| CN108680848A (en) * | 2018-06-14 | 2018-10-19 | 山东阅芯电子科技有限公司 | Second grade power circulation test method and device |
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| Publication number | Publication date |
|---|---|
| CN103454508B (en) | 2016-10-05 |
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Effective date of registration: 20200420 Address after: 518000 floor 1-6, No.1, Huaji workshop, No.180 Jianhui Road, Hualian community, Longhua street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Luhua Zhifu Electronics (Shenzhen) Co., Ltd Address before: 518000, Shenzhen, Guangdong, Baoan District Longhua Street big wave South Road Sanlian Industrial Zone, Hua Arts crafts emporium Patentee before: Roofer Technology (Shenzhen) Co.,Ltd. |