CN203275523U - A resistance automatic testing system - Google Patents
A resistance automatic testing system Download PDFInfo
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- CN203275523U CN203275523U CN 201320302127 CN201320302127U CN203275523U CN 203275523 U CN203275523 U CN 203275523U CN 201320302127 CN201320302127 CN 201320302127 CN 201320302127 U CN201320302127 U CN 201320302127U CN 203275523 U CN203275523 U CN 203275523U
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- test system
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Abstract
The utility model discloses a resistance automatic testing system and belongs to automatic testing field. The resistance automatic testing system comprises a control unit, a display unit, a key, a storage unit, a resistance generating unit, and an output/test channel. The key is connected with the input end of the control unit. The input end of the resistance generating unit is connected with the output end of the control unit. The output end of the resistance generating unit is connected with the output/test channel. The display unit and the storage unit are connected with control unit bidirectionally. A power supply is connected with the all above units and provides supply voltage for an entire system. The resistance automatic testing system has characteristics of high testing precision, fast speed, and a function capable of saving testing records.
Description
Technical field
The utility model relates to a kind of resistance Auto-Test System, belongs to field of automatic testing.
Background technology
At present, various instrument all need to carry out resistance test, especially for some, water-thermometer are arranged, and the combination instrument of fuel gauge, resistance test are particularly important.
Method for the test of resistance in prior art mainly contains two kinds:
One, test by specialized analyzer, shortcoming is: configuration is many, and cost is high, and is strongly professional, to the user require high;
Two, test manually, shortcoming is: because of the manual test that is a grade a grade, easily transfer wrong resistance; Test speed is slow, and easily makes mistakes, and easily diverts one's attention during observation.
In view of this, the inventor studies this, develops specially a kind of resistance Auto-Test System, and this case produces thus.
The utility model content
The purpose of this utility model is to provide a kind of resistance Auto-Test System that measuring accuracy is high, speed fast, can store test record that has.
To achieve these goals, solution of the present utility model is:
A kind of resistance Auto-Test System, comprise control module, display unit, button, storage unit, resistance generation unit, output/test channel, wherein, button is connected with the input end of control module, the input end of resistance generation unit is connected with the output terminal of control module, and output terminal is connected with output/test channel, and display unit is connected with storage element with control module is two-way and is connected, power supply is connected with above-mentioned each unit, for whole system provides supply voltage.
Above-mentioned control module adopts single-chip microcomputer, and specifically can select model is the single-chip microcomputer of STM8S207R8.Control module is pressed the resistance value of exportable 1.0～2047.0 Europe scopes of each passage of test request according to the certain procedures setting, between each resistance with the test function of adjustable frequency sweep.
The resistance generation unit mainly is comprised of precision resistance, relay, driving chip etc., the signal of control module output amplifies the work of rear drive relay through the chip of overdriving, open and close to select the combination of different precision resistances by pilot relay, thereby realize the output of different resistance values, needed the instrument of simulating signal that the resistance variable is provided.
The output resistance scope of above-mentioned resistance generation unit is 1.0～2047.0 Ω, and precision is 0.1 Ω.
Storage unit adopts eeprom memory.
Display unit adopts LCD to show.
During above-mentioned resistance Auto-Test System work, the resistance value that first need to export by key-press input, and show by display unit, control module is stored in this resistance value in storage unit simultaneously, the resistance generation unit is exported corresponding resistance value according to the control signal of control module, and provides by output channel the simulating signal that needs for tested instrument, simultaneously test channel can external multimeter etc. surveying instrument, indicate the precision of output resistance.
Compared with prior art, above-mentioned resistance Auto-Test System has the following advantages:
1. the operator only needs disposablely on request to set required resistance, need not to transfer manually resistance value, and output accuracy can reach 0.1 Ω;
2. system can export each resistance test point automatically by configuration requirement, and can set the frequency sweep time (0.5s～30s) of each resistance;
3. in the situation that when outage or lower task, can access the set value of work last time, do not need to reset again;
4. can external multimeter, be used for test or proofread and correct;
5. greatly shorten the test duration.
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
Description of drawings
Fig. 1 is the resistance Auto-Test System system chart of the present embodiment;
Fig. 2 is the resistance generation unit circuit diagram of the present embodiment.
Embodiment
As shown in Figure 1, a kind of resistance Auto-Test System comprises control module 1, resistance generation unit 2, output/test channel 3, storage unit 5, display unit 4 and button 6 etc., and wherein, button 6 is connected with the input end of control module 1, is used for the resistance value input; The input end of resistance generation unit 2 is connected with the output terminal of control module 1, output terminal is connected with output/test channel 3, display unit 4 is connected with storage element and is connected with control module 1 is two-way respectively, and power supply is connected with the input end of above-mentioned each unit, for whole system provides supply voltage.
Above-mentioned control module 1 adopts single-chip microcomputer, and specifically can select model is the single-chip microcomputer of STM8S207R8.Control module 1 is pressed the resistance value of exportable 1.0～2047.0 Europe scopes of each passage of test request according to the certain procedures setting, between each resistance with the test function of adjustable frequency sweep.
Resistance generation unit 2 mainly is comprised of precision resistance, relay, ULN2003 driving chip etc., the signal of control module 1 output amplifies the work of rear drive relay through the chip of overdriving, open and close to select the combination of different precision resistances by pilot relay, thereby realize the output of different resistance values, needed the instrument of simulating signal that the resistance variable is provided.
The output resistance scope of above-mentioned resistance generation unit 2 is 1.0～2047.0 Ω, and precision is 0.1 Ω.
Storage unit adopts eeprom memory, and specifically can select model is the storage chip of AT93C66.
Display unit adopts LCD to show.
During above-mentioned resistance Auto-Test System work, first need the resistance value of output by button 6 inputs, and show by display unit 4, control module 1 is stored in this resistance value in storage unit 5 simultaneously, resistance generation unit 2 is exported corresponding resistance value according to the control signal of control module 1, and provides by output/test channel 3 simulating signal that needs for tested instrument 7, simultaneously test channel 3 can external multimeter etc. surveying instrument, indicate the precision of output resistance.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (7)
1. resistance Auto-Test System, it is characterized in that: comprise control module, display unit, button, storage unit, resistance generation unit, output/test channel, wherein, button is connected with the input end of control module, the input end of resistance generation unit is connected with the output terminal of control module, and output terminal is connected with output/test channel, and display unit is connected with storage element with control module is two-way and is connected, power supply is connected with above-mentioned each unit, for whole system provides supply voltage.
2. a kind of resistance Auto-Test System as claimed in claim 1, is characterized in that: above-mentioned control module employing single-chip microcomputer.
3. a kind of resistance Auto-Test System as claimed in claim 2 is characterized in that: it is the single-chip microcomputer of STM8S207R8 that above-mentioned control module is selected model.
4. a kind of resistance Auto-Test System as claimed in claim 1, it is characterized in that: the resistance generation unit mainly is comprised of precision resistance, relay, driving chip, the signal of control module output amplifies the work of rear drive relay through the chip of overdriving, open and close to select the combination of different precision resistances by pilot relay, thereby realize the output of different resistance values, needed the instrument of simulating signal that the resistance variable is provided.
5. a kind of resistance Auto-Test System as claimed in claim 4, it is characterized in that: the output resistance scope of above-mentioned resistance generation unit is 1.0～2047.0 Ω, precision is 0.1 Ω.
6. a kind of resistance Auto-Test System as claimed in claim 1, is characterized in that: storage unit employing eeprom memory.
7. a kind of resistance Auto-Test System as claimed in claim 1, is characterized in that: display unit employing LCD demonstration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302127 CN203275523U (en) | 2013-05-29 | 2013-05-29 | A resistance automatic testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320302127 CN203275523U (en) | 2013-05-29 | 2013-05-29 | A resistance automatic testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203275523U true CN203275523U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320302127 Expired - Fee Related CN203275523U (en) | 2013-05-29 | 2013-05-29 | A resistance automatic testing system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203275523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917889A (en) * | 2018-07-26 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of fuel gauge test macro and method |
-
2013
- 2013-05-29 CN CN 201320302127 patent/CN203275523U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108917889A (en) * | 2018-07-26 | 2018-11-30 | 安徽江淮汽车集团股份有限公司 | A kind of fuel gauge test macro and method |
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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: 20131106 Termination date: 20150529 |
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| EXPY | Termination of patent right or utility model |