CN204694824U - Variable-frequency motor intelligent test device - Google Patents
Variable-frequency motor intelligent test device Download PDFInfo
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- CN204694824U CN204694824U CN201520419385.5U CN201520419385U CN204694824U CN 204694824 U CN204694824 U CN 204694824U CN 201520419385 U CN201520419385 U CN 201520419385U CN 204694824 U CN204694824 U CN 204694824U
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Abstract
The utility model discloses a kind of variable-frequency motor intelligent test device, comprise frequency converter and motor, the output terminal of frequency converter is connected with motor, also comprise Hall element, filtering circuit, A/D change-over circuit, controller, driver module and host computer, described Hall element is arranged on frequency converter output line, the signal output part of Hall element is connected with the input end of filtering circuit, filtering circuit, A/D change-over circuit, controller are connected in series successively, controller is connected with host computer, driver module respectively, and driver module is connected with frequency converter.Hall element detects the status signal of motor, and output current signal, controller is sent into after being converted to digital signal after current signal filtering, controller exports according to the signal of input and controls signal to driver module accordingly, control the start and stop of frequency converter, with Time Controller, signal is sent into host computer to show in real time, its whole measuring process is simple, measuring accuracy is high.
Description
Technical field
The utility model relates to machine field, particularly a kind of variable-frequency motor intelligent test device.
Background technology
Variable-frequency motor adopts special converter to be combined with motor, more efficiently more popularly more to be widely used in AC speed regulating, motor adds many fault elements after frequency converter, the output current of frequency converter is difficult to directly measure, when this just makes fault occur, we need to carry out malfunction elimination respectively to frequency converter and motor, this malfunction elimination be difficulty and consuming time.For the variable-frequency motor that rated current is less, in order to prevent motor from damaging because of frequency converter failure, current detecting just seems more important, and for the user of variable-frequency motor, and the graphical intellectuality of testing result will improving production efficiency and use cost greatly.
Common variable-frequency motor current detecting design Main Basis current transformer method, Hall associating oscillograph method of testing, the former has larger error in steady-state behaviour and precision, and the latter often needs efficient staff to carry out comparatively complicated detection.Along with the use occasion of variable-frequency motor increases gradually, its failure rate and failure cost also increase gradually, and traditional detection method can not meet the needs of the quick low cost failture evacuation of variable-frequency motor.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides the variable-frequency motor intelligent test device that a kind of structure is simple, measuring accuracy is high, work efficiency is high.
The technical scheme that the utility model solves the problem is: a kind of variable-frequency motor intelligent test device, comprise frequency converter and motor, the output terminal of frequency converter is connected with motor, also comprise Hall element, filtering circuit, A/D change-over circuit, controller, driver module and host computer, described Hall element is arranged on frequency converter output line, the signal output part of Hall element is connected with the input end of filtering circuit, filtering circuit, A/D change-over circuit, controller is connected in series successively, controller respectively with host computer, driver module is connected, driver module is connected with frequency converter.
Above-mentioned variable-frequency motor intelligent test device also comprises alarm module, and described alarm module is connected with controller.
Above-mentioned variable-frequency motor intelligent test device also comprises display, and described display is connected with controller.
Above-mentioned variable-frequency motor intelligent test device also comprises display, and described filtering circuit comprises LC filtering circuit and digital filter circuit.
In above-mentioned variable-frequency motor intelligent test device, the master chip of described A/D change-over circuit adopts AD7888.
In above-mentioned variable-frequency motor intelligent test device, described Hall element model is LF1005-S.
The beneficial effects of the utility model are: Hall element of the present utility model detects the status signal of motor and output current signal, A/D change-over circuit is sent into after current signal filtering, controller is sent into be converted to digital signal in A/D change-over circuit after, controller exports according to the signal of input and controls signal to driver module accordingly, control the start and stop of frequency converter, with Time Controller, signal is sent into display to show, its whole measuring process is simple, measuring accuracy is high; Signal can also be sent into host computer and carry out storing and showing by controller, and the control signal accepting host computer transmission controls frequency converter.
Accompanying drawing explanation
Fig. 1 is one-piece construction block diagram of the present utility model.
Fig. 2 is the master chip schematic diagram of the utility model middle controller.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
As shown in Figure 1, the utility model comprises frequency converter, motor, Hall element, filtering circuit 1, A/D change-over circuit, controller, display, alarm module, driver module and host computer, the output terminal of frequency converter is connected with motor, Hall element is arranged on frequency converter output line, the signal output part of Hall element is connected with the input end of filtering circuit 1, filtering circuit 1, A/D change-over circuit, controller are connected in series successively, controller is connected with host computer, driver module, display, alarm module respectively, and driver module is connected with frequency converter.
Hall element adopts LF1005-S, and its stability in frequency applications is strong, cost performance is excellent, precision is high.
Adopt LC filtering circuit to combine with digital filter circuit in filtering circuit 1, wherein LC filtering circuit is in order to suppress general harmonic wave, and digital filter circuit is in order to confirm current oscillation region.Such design makes test result more accurate, reliable.
The master chip of A/D change-over circuit adopts AD7888.
Display shows in real time to test data, adopts LCD display mode displaying data in real-time and waveform.
Driver module is used for controller to the on off control of frequency converter, and when electric motor starting, auxiliary converter steadily completes soft start, when fault for preventing motor damage, completing frequency converter constant frequency and shutting down at a slow speed.
Alarm is used for when fault being detected and alarm, reports to the police immediately, automatically switch to frequency converter shutdown mode when more than 20% when current/voltage exceedes rated current voltage.
Controller and host computer carry out data communication by serial ports, and host computer stores in real time the test data that controller transmits and shows (waveform and data), and can send a control signal to controller and control frequency converter.
Principle of work of the present utility model is as follows: Hall element detects the status signal of motor and output current signal, A/D change-over circuit is sent into after current signal filtering, controller is sent into be converted to digital signal in A/D change-over circuit after, controller exports according to the signal of input and controls signal to driver module accordingly, control the start and stop of frequency converter, start alarm immediately when current/voltage exceedes rated current voltage and carry out sound and light alarm, when exceeding 20% of rated voltage current value, driver module automatically switches to frequency converter shutdown mode; With Time Controller, signal is sent into display to show, its whole measuring process is simple, measuring accuracy is high; Signal can also be sent into host computer and carry out storing and showing by controller, and the control signal accepting host computer transmission controls frequency converter.
Claims (6)
1. a variable-frequency motor intelligent test device, comprise frequency converter and motor, the output terminal of frequency converter is connected with motor, it is characterized in that: also comprise Hall element, filtering circuit, A/D change-over circuit, controller, driver module and host computer, described Hall element is arranged on frequency converter output line, the signal output part of Hall element is connected with the input end of filtering circuit, filtering circuit, A/D change-over circuit, controller are connected in series successively, controller is connected with host computer, driver module respectively, and driver module is connected with frequency converter.
2. variable-frequency motor intelligent test device as claimed in claim 1, it is characterized in that: also comprise alarm module, described alarm module is connected with controller.
3. variable-frequency motor intelligent test device as claimed in claim 1, it is characterized in that: also comprise display, described display is connected with controller.
4. variable-frequency motor intelligent test device as claimed in claim 1, is characterized in that: described filtering circuit comprises LC filtering circuit and digital filter circuit.
5. variable-frequency motor intelligent test device as claimed in claim 1, is characterized in that: the master chip of described A/D change-over circuit adopts AD7888.
6. variable-frequency motor intelligent test device as claimed in claim 1, is characterized in that: described Hall element model is LF1005-S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419385.5U CN204694824U (en) | 2015-06-17 | 2015-06-17 | Variable-frequency motor intelligent test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419385.5U CN204694824U (en) | 2015-06-17 | 2015-06-17 | Variable-frequency motor intelligent test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204694824U true CN204694824U (en) | 2015-10-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520419385.5U Expired - Fee Related CN204694824U (en) | 2015-06-17 | 2015-06-17 | Variable-frequency motor intelligent test device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204694824U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108572318A (en) * | 2017-12-07 | 2018-09-25 | 湖南工程学院 | A kind of electric motor of automobile detecting system |
| CN109541334A (en) * | 2017-09-22 | 2019-03-29 | 博西华电器（江苏）有限公司 | Frequency converter test method and test device |
| CN110388354A (en) * | 2019-06-25 | 2019-10-29 | 中国海洋石油集团有限公司 | A kind of test macro |
| CN110412463A (en) * | 2019-07-30 | 2019-11-05 | 中国船舶重工集团公司第七0七研究所 | A kind of quick online detection device towards high-velocity scanning motor |
| CN112130017A (en) * | 2020-09-10 | 2020-12-25 | 厦门华联电子股份有限公司 | Testing device for variable frequency driver |
-
2015
- 2015-06-17 CN CN201520419385.5U patent/CN204694824U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541334A (en) * | 2017-09-22 | 2019-03-29 | 博西华电器（江苏）有限公司 | Frequency converter test method and test device |
| CN109541334B (en) * | 2017-09-22 | 2022-02-11 | 博西华电器（江苏）有限公司 | Frequency converter testing method and testing device |
| CN108572318A (en) * | 2017-12-07 | 2018-09-25 | 湖南工程学院 | A kind of electric motor of automobile detecting system |
| CN110388354A (en) * | 2019-06-25 | 2019-10-29 | 中国海洋石油集团有限公司 | A kind of test macro |
| CN110412463A (en) * | 2019-07-30 | 2019-11-05 | 中国船舶重工集团公司第七0七研究所 | A kind of quick online detection device towards high-velocity scanning motor |
| CN112130017A (en) * | 2020-09-10 | 2020-12-25 | 厦门华联电子股份有限公司 | Testing device for variable frequency driver |
| CN112130017B (en) * | 2020-09-10 | 2024-05-10 | 厦门华联电子股份有限公司 | Testing device for variable frequency driver |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20200617 |
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| CF01 | Termination of patent right due to non-payment of annual fee |