CN204256142U - Switching power supply of frequency converter board test device - Google Patents
Switching power supply of frequency converter board test device Download PDFInfo
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- CN204256142U CN204256142U CN201420741270.3U CN201420741270U CN204256142U CN 204256142 U CN204256142 U CN 204256142U CN 201420741270 U CN201420741270 U CN 201420741270U CN 204256142 U CN204256142 U CN 204256142U
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- power supply
- frequency converter
- switching power
- test fixture
- plate
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Abstract
The utility model provides a kind of switching power supply of frequency converter board test device, this device comprises, test fixture plate, host computer, needle-bar, digital multimeter, switching power supply of frequency converter plate to be measured is connected on test fixture plate by needle-bar, host computer is by USB and digital versatile list catenation, test fixture plate is connected with host computer by RS485 serial ports, and the output terminal of test fixture plate is connected with digital multimeter.By the use of test fixture plate in the utility model switching power supply of frequency converter board test device, and coordinate, improve the testing efficiency of switching power supply of frequency converter plate, reduce difficulty of test, guarantee to test the security of employee's operation with host computer, digital multimeter.
Description
Technical field
The utility model belongs to switching power supply of frequency converter board test field, particularly relates to switching power supply of frequency converter board test device.
Background technology
switching power supply of frequency converter plate major function provides stable low-voltage dc power supply to frequency converter inside each several part control circuit and external control terminal, detects DC bus-bar voltage simultaneously.Its principle of work is undertaken converting required various low-tension supplies to by Switching Power Supply plate by the high pressure of frequency changer direct current bus.Switching power supply of frequency converter plate is the supplier of the internal circuit block power supply of whole frequency converter, is unique power supply unit of the interior veneer of frequency converter.In frequency converter batch production, need the strict quality controlling switching power supply of frequency converter plate, the method efficiency of existing switching power supply of frequency converter plate production test is lower and difficulty of test is comparatively large, and needs plus high-pressure power supply, and when not only increase testing cost but also employee operate, Security of test is low.
Utility model content
The utility model is for the problem that in existing switching power supply of frequency converter board test process, efficiency is lower, Security of test is low, a kind of switching power supply of frequency converter board test device that can effectively solve the problem is provided, improve the testing efficiency of switching power supply of frequency converter plate, reduce difficulty of test, ensure the safety of tester during test.
The utility model solves the technical scheme that its technical matters adopts: provide a kind of switching power supply of frequency converter board test device, this device comprises, test fixture plate, host computer, needle-bar, digital multimeter, switching power supply of frequency converter plate to be measured is connected on test fixture plate by needle-bar, host computer is by USB and digital versatile list catenation, test fixture plate is connected with host computer by RS485 serial ports, and the output terminal of test fixture plate is connected with digital multimeter.
By technique scheme, described test fixture plate comprises input port, output port, MCU, driving chip, relay commutation circuit, rectification circuit, output terminal interface, rectification circuit is connected with switching power supply of frequency converter plate to be measured by output port, switching power supply of frequency converter plate to be measured is connected by the input end of described input port with relay commutation circuit, MCU is switched by the relay of described driving chip to relay commutation circuit inside, the output terminal of relay commutation circuit is connected with the output terminal interface of test fixture plate, the positive pole of the output terminal interface of test fixture plate, negative pole respectively with the positive pole of digital multimeter, negative pole is connected.
By technique scheme, described driving chip is 74 serial driving chip.
By technique scheme, described relay commutation circuit repeat circuit is electromagnetic type relay.
The utility model has following beneficial effect: by the use of test fixture plate in the utility model switching power supply of frequency converter board test device, and coordinate with host computer, digital multimeter, the security of the employee's operation that improves the testing efficiency of switching power supply of frequency converter plate, reduces difficulty of test, guarantees to test.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the utility model embodiment switching power supply of frequency converter board test device;
Fig. 2 is the schematic diagram of the test fixture plate of the utility model embodiment;
Fig. 3 is the Signal transmissions relation between switching power supply of frequency converter plate and relay commutation circuit.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
In the utility model embodiment, a kind of switching power supply of frequency converter board test device is provided, as shown in Figure 1, this device comprises, test fixture plate, host computer, needle-bar, digital multimeter, switching power supply of frequency converter plate to be measured is connected on test fixture plate by needle-bar, host computer is by USB(Universal Serial Bus, i.e. USB (universal serial bus)) and digital versatile list catenation, test fixture plate is connected with host computer by RS485 serial ports, and the output terminal of test fixture plate is connected with digital multimeter.
Further, as Fig. 2, shown in Fig. 3, test fixture plate comprises input port, output port, MCU, driving chip, relay commutation circuit, rectification circuit, output terminal interface, rectification circuit is connected with switching power supply of frequency converter plate to be measured by output port, switching power supply of frequency converter plate to be measured is connected by the input end of described input port with relay commutation circuit, MCU is switched by the relay of described driving chip to relay commutation circuit inside, the output terminal of relay commutation circuit is connected with the output terminal interface of test fixture plate, the positive pole of the output terminal interface of test fixture plate, negative pole respectively with the positive pole of digital multimeter, negative pole is connected.X1 port is the input port of test fixture plate.
Wherein, driving chip can select 74 serial driving chip.Meanwhile, relay commutation circuit repeat circuit can select electromagnetic type relay.
Principle of work of the present utility model is: be placed on needle-bar by tested switching power supply of frequency converter plate, just automatic test can be started after clicking host computer, and the data of test and the data area pre-set are compared, judge the normal condition of switching power supply of frequency converter plate circuit.In test process, switching power supply of frequency converter board test device adopts single-phase current 220V to power, and has installed fuse and power switch button and power light in switching power supply of frequency converter board test device.220V rectification is that 310V is supplied to switching power supply of frequency converter plate by the rectification circuit on test fixture plate, all kinds of low-voltage dc power supplies needed for switching power supply of frequency converter plate produces.For the method for testing of switching power supply of frequency converter plate output signal port, by host computer transmitting order to lower levels, test fixture plate carries out circuit switching by relay commutation circuit, and the output voltage signal gathering switching power supply of frequency converter plate exports to digital multimeter.Test result, according to host computer order switch test pattern, is uploaded to host computer after every test completes by digital multimeter.Host computer by data with pre-set value and compare, it is qualified to judge whether.By testing all signals of switching power supply of frequency converter plate input and output, whether final judgement all functions module is normal.As shown in Figure 2, test fixture plate adopts 220V Alternating Current Power Supply, turns DC Module produce 2 road power supplys by internal communication.5V is converted to the driving chip that 3V is supplied to test fixture intralamellar part and powers, and 24V supplies relay commutation circuit and uses.220V rectification is 310V by rectification circuit.In preferred embodiment of the present utility model, the order that MCU issues according to host computer controls gate-controlled switch, the output of gate-controlled switch control 310V.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to the utility model claims.
Claims (4)
1. a switching power supply of frequency converter board test device, it is characterized in that, this device comprises, test fixture plate, host computer, needle-bar, digital multimeter, switching power supply of frequency converter plate to be measured is connected on test fixture plate by needle-bar, host computer is by USB and digital versatile list catenation, and test fixture plate is connected with host computer by RS485 serial ports, and the output terminal of test fixture plate is connected with digital multimeter.
2. switching power supply of frequency converter board test device according to claim 1, it is characterized in that, described test fixture plate comprises input port, output port, MCU, driving chip, relay commutation circuit, rectification circuit, output terminal interface, rectification circuit is connected with switching power supply of frequency converter plate to be measured by output port, switching power supply of frequency converter plate to be measured is connected by the input end of described input port with relay commutation circuit, MCU is switched by the relay of described driving chip to relay commutation circuit inside, the output terminal of relay commutation circuit is connected with the output terminal interface of test fixture plate, the positive pole of the output terminal interface of test fixture plate, negative pole respectively with the positive pole of digital multimeter, negative pole is connected.
3. switching power supply of frequency converter board test device according to claim 2, is characterized in that, described driving chip is 74 serial driving chip.
4. the switching power supply of frequency converter board test device according to Claims 2 or 3, is characterized in that, described relay commutation circuit repeat circuit is electromagnetic type relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741270.3U CN204256142U (en) | 2014-12-01 | 2014-12-01 | Switching power supply of frequency converter board test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741270.3U CN204256142U (en) | 2014-12-01 | 2014-12-01 | Switching power supply of frequency converter board test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204256142U true CN204256142U (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741270.3U Active CN204256142U (en) | 2014-12-01 | 2014-12-01 | Switching power supply of frequency converter board test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204256142U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064670A (en) * | 2017-02-22 | 2017-08-18 | 深圳市长龙铁路电子工程有限公司 | A kind of power transformer testboard |
-
2014
- 2014-12-01 CN CN201420741270.3U patent/CN204256142U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064670A (en) * | 2017-02-22 | 2017-08-18 | 深圳市长龙铁路电子工程有限公司 | A kind of power transformer testboard |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |