CN209372953U - A kind of novel test circuit - Google Patents
A kind of novel test circuit Download PDFInfo
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- CN209372953U CN209372953U CN201822246350.2U CN201822246350U CN209372953U CN 209372953 U CN209372953 U CN 209372953U CN 201822246350 U CN201822246350 U CN 201822246350U CN 209372953 U CN209372953 U CN 209372953U
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- 238000012360 testing method Methods 0.000 title claims abstract description 63
- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 230000005611 electricity Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 16
- 238000013461 design Methods 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000011664 signaling Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a kind of novel test circuits, including, input module, the input module is used to export control signal；First number Ju conversion circuit, the input module of the first number Ju conversion circuit connects output end, and the control letter that input module exports is converted into analog signal or digital signal and gives junior's circuit by the first number Ju conversion circuit；Main control module；The output end of corresponding input terminal connection the first number Ju conversion circuit of the main control module, the control signal of the first number of main control module processing Ju conversion circuit output, and main control module output end exports control signal and gives junior's circuit；The utility model has test pattern control diversification, and circuit design is simple, the advantage that circuit lifetime is long, measurement is accurate.
Description
Technical field
The utility model belongs to the field of test technology, and in particular to a kind of novel test circuit.
Background technique
The test circuit of existing market, the more complicated of circuit design, mode of operation are single, and the number Ju tested is not smart enough
Really.
Utility model content
The purpose of this utility model is to provide a kind of novel test circuit, with solve circuit design it is more complicated,
Single, the inaccurate problem of mode of operation.
To achieve the above object, the utility model provides the following technical solutions: a kind of novel test circuit, including,
Input module, the input module are used to export control signal；
First number Ju conversion circuit, the input module of the first number Ju conversion circuit connect output end, and the first number Ju
The control letter that input module exports is converted into analog signal or digital signal and gives junior's circuit by conversion circuit；
Main control module；The output end of corresponding input terminal connection the first number Ju conversion circuit of the main control module, it is described
The control signal of main control module processing the first number Ju conversion circuit output, and main control module output end exports control signal to junior
Circuit；
Test lead, test lead output end connection corresponding with main control module, and test lead root Ju main control module exports
Control signal, carry out current or voltage test, and test result is fed back into main control module, and test and believe through main control module
Number output end is exported to external display circuit.
Preferably, the main control module includes the outer of switching circuit, AD5520 control chip and its AD5520 control chip
Enclose circuit；The input terminal of the switching circuit is connect with 49 pins of AD5520 control chip, the output end of the switching circuit
It is connect respectively with 46 pins, 47 pins of AD5520 control chip.
Preferably, the switching circuit includes BUF634T operational amplifier, first switch key1, second switch key2, electricity
Hinder R1, resistance R32；The input terminal of the BUF634T operational amplifier is connect with 49 pins of AD5520 control chip, described
The output end of BUF634T operational amplifier is connect with one end of one end of first switch key1, second switch key2 respectively, described
The other end of first switch key1, the other end of second switch key2 control 46 pin of chip, 47 with corresponding AD5520 respectively
Pin connection, and the other end of the other end of first switch key1, second switch key2 are respectively through corresponding resistance R1, resistance
R32 is connect with test lead.
Preferably, the test lead is connected with corresponding AD5520 control 36 pin of chip, 37 pins respectively.
Preferably, the first number Ju conversion circuit is set as DAC14_A core decoding chip, and the DAC14_A core decodes core
The output end connection corresponding with input module of piece input terminal, the DAC14_A core decoding chip output end and AD5520 control core
The corresponding input pin connection of piece.
Preferably, the input module is set as computer or GPS signal, WIFI signal or Bluetooth signal.
Preferably, the input terminal of the external display circuit is connect with AD5520 control 60 pin of chip, 61 pins respectively.
The utility model compared with prior art, has the advantages that
(1), the utility model is decoded into when input module exports current measurement signal through DAC14_A core decoding chip
Digital signal, and chip output current measuring signal, and the voltage at the tested end of test lead voltage measurement are controlled by AD5520
For 3V, when electric current is 1mA, then first switch key1, second switch key2 are disconnected, then carry out small electricity of the test lead to tested end
Flow measurement, and AD5520 control chip interior processing test electric current, and export to external display circuit；
(2), the utility model is when input module exports output current measurement signal, through DAC14_A core decoding chip solution
Code is at digital signal, and controlling chip output voltage by AD5520 is 3V, and electric current is that 10mA is exported to test lead, and first opens
When closing key1 closure, second switch key2 disconnection or first switch key1 disconnection, second switch key2 closure, AD5520 controls core
Piece output voltage is amplified to BUF634T operational amplifier, and by resistance R2 or R1 partial pressure, flow increasing, makes test lead to quilt
Survey end carry out increase current measurement value detection, test lead measurement as a result, again through AD5520 control chip handled after, it is defeated
Out to external display circuit；
(3), the utility model is when input module exports output current measurement signal, through DAC14_A core decoding chip solution
Code is at digital signal, while AD5520 control chip output voltage is 10V, and electric current is 0A to test lead, and in first switch
When key1, second switch key2 are disconnected, test lead passes through the carry out voltage tester at tested end, the result of test lead test again
AD5520 control chip is exported to external display circuit, in addition input module can for computer or GPS signal, WIFI signal or
Bluetooth signal；Therefore the utility model has test pattern control diversification, and circuit design is simple, circuit lifetime length, measurement essence
True beneficial effect.
Detailed description of the invention
Fig. 1 is the circuit diagram of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Refering to Figure 1, the utility model provides the following technical solutions: a kind of novel test circuit, including,
Input module 1, the input module 1 are used to export control signal；
First number Ju conversion circuit 2, the input module 1 of the first number Ju conversion circuit 2 connect output end, and the first number
The control letter that input module 1 exports is converted into analog signal or digital signal and gives junior's circuit by Ju conversion circuit 2；
Main control module；The output end of corresponding input terminal connection the first number Ju conversion circuit 2 of the main control module, it is described
The control signal that main control module processing the first number Ju conversion circuit 2 exports, and main control module output end exports control signal and gives down
Grade circuit；
Test lead 4, the test lead 4 output end connection corresponding with main control module, and 4 Ju main control modules of test lead are defeated
Control signal out carries out current or voltage test, and test result is fed back to main control module, and test through main control module
Signal output end is exported to external display circuit 3.
The main control module includes the peripheral circuit of switching circuit, AD5520 control chip and its AD5520 control chip；
49 pins of the input terminal of the switching circuit and AD5520 control chip are connect, the output end of the switching circuit respectively with
AD5520 controls 46 pins of chip, the connection of 47 pins.
The switching circuit includes BUF634T operational amplifier, first switch key1, second switch key2, resistance R1, electricity
Hinder R32；The input terminal of the BUF634T operational amplifier is connect with 49 pins of AD5520 control chip, the BUF634T fortune
The output end for calculating amplifier is connect with one end of one end of first switch key1, second switch key2 respectively, the first switch
The other end of key1, the other end of second switch key2 are connected with corresponding AD5520 control 46 pin of chip, 47 pins respectively,
And the other end of the other end of first switch key1, second switch key2 are respectively through corresponding resistance R1, resistance R32 and test lead
4 connections.
The test lead 4 is connected with corresponding AD5520 control 36 pin of chip, 37 pins respectively.
The first number Ju conversion circuit 2 is set as DAC14_A core decoding chip, the DAC14_A core decoding chip input
Output end connection corresponding with input module 1 is held, the DAC14_A core decoding chip output end is corresponding with AD5520 control chip
Input pin connection.
The input module 1 is set as computer or GPS signal, WIFI signal or Bluetooth signal.
The input terminal of the external display circuit 3 is connect with AD5520 control 60 pin of chip, 61 pins respectively.
Embodiment
(1), the utility model is decoded into when input module 1 exports current measurement signal through DAC14_A core decoding chip
Digital signal, and chip output current measuring signal, and the voltage at the tested end of 4 voltage measurement of test lead are controlled by AD5520
For 3V, when electric current is 1mA, then first switch key1, second switch key2 are disconnected, then test lead 4 is small to the carry out at tested end
Current measurement, and AD5520 control chip interior processing test electric current, and export to external display circuit 3；
(2), the utility model is when input module 1 exports output current measurement signal, through DAC14_A core decoding chip solution
Code is at digital signal, and controlling chip output voltage by AD5520 is 3V, and electric current exports for 10mA to test lead 4, and first
When switch key1 closure, second switch key2 are disconnected or first switch key1 is disconnected, second switch key2 is closed, AD5520 control
Chip output voltage is amplified to BUF634T operational amplifier, and by resistance R2 or R1 partial pressure, flow increasing, makes test lead 4
Increase current measurement value detection to tested end, the measurement of test lead 4 is handled as a result, controlling chip through AD5520 again
Afterwards, output is to external display circuit 3；
(3), the utility model is when input module 1 exports output current measurement signal, through DAC14_A core decoding chip solution
Code is at digital signal, while AD5520 control chip output voltage is 10V, and electric current is 0A to test lead 4, and in first switch
When key1, second switch key2 are disconnected, test lead 4 is to the carry out voltage tester at tested end, and the result that test lead 4 is tested is through again
It exports through AD5520 control chip to external display circuit 3, in addition input module 1 can be computer or GPS signal, WIFI letter
Number or Bluetooth signal；Therefore the utility model has test pattern control diversification, and circuit design is simple, and circuit lifetime is long to be had
Beneficial effect.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (7)
1. a kind of novel test circuit, it is characterised in that: including test lead；
Input module, the input module are used to export control signal；
First number Ju conversion circuit, the input module of the first number Ju conversion circuit connect output end, and the first number Ju conversion
The control letter that input module exports is converted into analog signal or digital signal and gives junior's circuit by circuit；
Main control module；The output end of corresponding input terminal connection the first number Ju conversion circuit of the main control module, the master control
The control signal of the number Ju conversion circuit output of resume module first, and main control module output end exports control signal and gives junior's electricity
Road；
Test lead, test lead output end connection corresponding with main control module, and the control of test lead root Ju main control module output
Signal processed carries out current or voltage test, and test result is fed back to main control module, and defeated through main control module test signal
Outlet is exported to external display circuit.
2. the novel test circuit of one kind according to claim 1, it is characterised in that: the main control module includes switch electricity
The peripheral circuit on road, AD5520 control chip and its AD5520 control chip；The input terminal and AD5520 of the switching circuit are controlled
49 pins of coremaking piece connect, and 46 pins, 47 pins of the output end of the switching circuit respectively with AD5520 control chip connect
It connects.
3. the novel test circuit of one kind according to claim 2, it is characterised in that: the switching circuit includes
BUF634T operational amplifier, first switch key1, second switch key2, resistance R1, resistance R32；The BUF634T operation is put
The input terminal of big device is connect with AD5520 49 pins for controlling chip, the output end of the BUF634T operational amplifier respectively with
One end connection of one end, second switch key2 of first switch key1, the other end, the second switch of the first switch key1
The other end of key2 is connected with corresponding AD5520 control 46 pin of chip, 47 pins respectively, and first switch key1's is another
It holds, the other end of second switch key2 is connect through corresponding resistance R1, resistance R32 with test lead respectively.
4. the novel test circuit of one kind according to claim 3, it is characterised in that: the test lead respectively with it is corresponding
AD5520 controls 36 pin of chip, the connection of 37 pins.
5. the novel test circuit of one kind according to claim 4, it is characterised in that: the first number Ju conversion circuit is set
For DAC14_A core decoding chip, DAC14_A core decoding chip input terminal output end connection corresponding with input module, institute
DAC14_A core decoding chip output end input pin corresponding with AD5520 control chip is stated to connect.
6. the novel test circuit of one kind according to claim 5, it is characterised in that: the input module be set as computer or
GPS signal, WIFI signal or Bluetooth signal.
7. the novel test circuit of one kind according to claim 6, it is characterised in that: the input of the external display circuit
End is connect with AD5520 control 60 pin of chip, 61 pins respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822246350.2U CN209372953U (en) | 2018-12-28 | 2018-12-28 | A kind of novel test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822246350.2U CN209372953U (en) | 2018-12-28 | 2018-12-28 | A kind of novel test circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209372953U true CN209372953U (en) | 2019-09-10 |
Family
ID=67828440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822246350.2U Expired - Fee Related CN209372953U (en) | 2018-12-28 | 2018-12-28 | A kind of novel test circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209372953U (en) |
-
2018
- 2018-12-28 CN CN201822246350.2U patent/CN209372953U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190910 |