CN208907906U - A kind of switching value automatic test device - Google Patents
A kind of switching value automatic test device Download PDFInfo
- Publication number
- CN208907906U CN208907906U CN201821382164.5U CN201821382164U CN208907906U CN 208907906 U CN208907906 U CN 208907906U CN 201821382164 U CN201821382164 U CN 201821382164U CN 208907906 U CN208907906 U CN 208907906U
- Authority
- CN
- China
- Prior art keywords
- controller
- connect
- test device
- interface
- automatic test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Tests Of Electronic Circuits (AREA)
- Test And Diagnosis Of Digital Computers (AREA)
Abstract
The utility model belongs to test device technical field, propose a kind of switching value automatic test device, including cabinet, several input interfaces, several output interfaces for connecting with awaiting board card are provided on cabinet, cabinet inside is provided with controller, controller is all connected with input interface, output interface, and controller is connect by level conversion driving circuit with output interface, and input interface is connect by bus transceiver with controller.The utility model solves the problems, such as that switch amount test operation is cumbersome in the prior art, test needs the time long.
Description
Technical field
The utility model belongs to test device technical field, is related to a kind of switching value automatic test device.
Background technique
Current existing switching value measuring technology much or using it is artificial be directly shorted open into method, cannot fast have
The state for seeing the amount of outputing of effect cannot effectively generate multiple inputs utmostly to simulate presence states, to switch simultaneously
Amount circuit does not have effective, accurate on-site testing device, and cumbersome in test, the testing time is long.
Utility model content
The utility model proposes a kind of switching value automatic test device, solves switch amount test behaviour in the prior art
Make cumbersome, test and needs time long problem.
The technical solution of the utility model is achieved in that
A kind of switching value automatic test device, comprising:
Controller, the controller are connected with several input interfaces, several output interfaces for connecting with awaiting board card,
The controller is connect by level conversion driving circuit with the output interface, and the input interface passes through bus
Transceiver is connect with the controller.
As further technical solution, the controller is connected with power module, and the power module includes that voltage is defeated
Enter end and with the sequentially connected first voltage conversion circuit of the voltage input end, second voltage conversion circuit,
The voltage input end is connect with the level conversion driving circuit,
The first voltage conversion circuit connects with the level conversion driving circuit, the bus transceiver, the input
Mouth is all connected with,
The second voltage conversion circuit is connect with the controller.
As further technical solution, the level conversion driving circuit includes successively connecting with the controller
Metal-oxide-semiconductor driving circuit, darlington transistor array, the darlington transistor array are connect with the output interface,
The metal-oxide-semiconductor driving circuit is provided with several, and the metal-oxide-semiconductor driving circuit includes metal-oxide-semiconductor, the metal-oxide-semiconductor
Grid is connect with the controller, the drain electrode of the metal-oxide-semiconductor and the first voltage conversion circuit, the Darlington transistor battle array
Column are all connected with, and the source electrode of the metal-oxide-semiconductor is connected to ground.
As further technical solution, several bus transceivers are also connected with decoder, and the decoder passes through
Schmidt trigger is connect with the controller.
As further technical solution, the controller is connected with USB module, and the USB module includes and the control
Device sequentially connected USB switching chip, USB interface processed,
The USB switching chip, the USB interface are connect with the first voltage conversion circuit.
As further technical solution, the controller is also connected with display panel module, downloading and debugging interface and outer
Enclose circuit.
As further technical solution, the input interface, the output interface are arranged on cabinet, the control
The inside of the cabinet is arranged in device,
It is provided with liquid crystal display by the input interface, the output interface,
The quantity of the input interface is equal with the quantity of the output interface,
The liquid crystal display is connect with the display panel module.
As further technical solution, the concrete model of the controller is STM32F429IGT6, the bus transmitting-receiving
The concrete model of device is 74LS245, and the concrete model of the decoder is 74LS138, the particular type of the Schmidt trigger
It number is 74HC14, the concrete model of the darlington transistor array is ULN2003, the concrete model of the USB switching chip
For CH340G.
The utility model is using principle and has the beneficial effect that
1, the switching value automatic test device in the utility model, is provided with input interface, output interface on cabinet,
Input interface, output interface can connect all I/O mouthfuls of awaiting board card, it is possible to reduce connecting line, occupied space is smaller, operation
It is more convenient.
By it is to be measured apply for card connect after, controller passes sequentially through level conversion driving circuit, output interface export it is different
For data-signal to the input terminal of awaiting board card, the data of input are transferred to awaiting board card again by the input terminal of awaiting board card
Output terminal, data are passed sequentially through input interface again by the output terminal of awaiting board card, bus transceiver is transferred to controller, control
Device processed after receiving the data, will be by judging to be sent to the data of awaiting board card input terminal and to receive awaiting board card defeated
Whether terminal total evidence is consistent out, to judge whether awaiting board card can work normally.Entire test process can pass through control
Display panel module processed or the host computer connecting with USB module operation, test process may be implemented to automate, and be not necessarily to manual intervention.
The output port of this switching value automatic test device controls level conversion driving circuit by controller, will be different
Voltage signal different awaiting board card input terminals are sent to by output port, whole ports of output port can be made to set
1,0,1 even number position 0 of each port odd positions, these four electricity of 0 even number position 1 of each port odd positions are set in whole ports
Flat, so as to which more accurate, more comprehensively whether test awaiting board card can work normally, test effect is more efficient.
2, the switching value automatic test device supply voltage in the utility model is 24V, and 24V power supply turns for external 220V
24V is directly inputted, then is powered by first voltage conversion circuit, the chip that second voltage conversion circuit is modules, and first
Voltage conversion circuit is converted to 5V voltage by 7505 chips, and second voltage conversion circuit is converted by AMS1117 chip
To 3.3V voltage, 5V voltage can be bus transceiver, decoder, USB switching chip, level conversion driving circuit and display screen
Module for power supply, 3.3V voltage can power for controller, and 24V voltage can power for output port.
3, voltage signal is transferred to output port by level conversion driving circuit by the controller in the utility model, then
The input terminal of awaiting board card is transferred to by output port, after voltage signal is transmitted to the grid of MOS pipe by controller, with
The corresponding pin of darlington transistor array of the drain electrode connection of metal-oxide-semiconductor can obtain high level or low level, Darlington transistor
The corresponding output pin of array can export low level or high level, i.e., with the level phase of darlington transistor array input pin
Instead.The model ULN2003 of darlington transistor array is high-voltage great-current darlington transistor array series of products, is adapted to
Temperature range is wide, carrying load ability is stronger, can achieve the requirement of high-speed high-power drive system.
4, the pull-up resistor of the public termination 5V of each of input port of this switching value automatic test device, awaiting board card
Input port of the signal of output terminal Jing Guo the present apparatus, then the bus transceiver by connecting with input port transmit signal
Judge to controller for controller, but bus transceiver needs the signal transmitted that can select to send to again by decoder timesharing
Controller.
5, the controller in the utility model is also connected with USB module, and USB module can connect test device and host computer
It picks up and, realize that data interaction does not need so as to monitor the operation and real time data of test device by host computer
Manual intervention.
Port data in the utility model can also be checked by the liquid crystal display being arranged on cabinet, simple square
Just.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the circuit diagram of controller in the utility model；
Fig. 2 is the circuit diagram of level conversion driving circuit in the utility model；
Fig. 3 is the circuit diagram of output interface in the utility model；
Fig. 4 is the circuit diagram of input interface in the utility model；
Fig. 5 is the circuit diagram of bus transceiver in the utility model；
Fig. 6 is the circuit diagram of decoder in the utility model；
Fig. 7 is the circuit diagram of USB module in the utility model；
Fig. 8 is the circuit diagram of power module in the utility model；
Fig. 9 is the circuit diagram of display panel module in the utility model；
Figure 10 is the circuit diagram of debugging interface in the utility model；
Figure 11 is the circuit diagram of cabinet in the utility model；
Figure 12 is the principles of the present invention block diagram；
In figure: 1- cabinet, 2- input interface, 3- output interface, 4- controller, 5- level conversion driving circuit, 51-MOS
Tube drive circuit, 511-MOS pipe, 52- darlington transistor array, 6- bus transceiver, 7- power module, 71- voltage input
End, 72- first voltage conversion circuit, 73- second voltage conversion circuit, 8- decoder, 9- Schmidt trigger, 10-USB mould
Block, 101-USB switching chip, 102-USB interface, 11- display panel module, 12- downloading and debugging interface, 13- peripheral circuit,
14- liquid crystal display.
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 creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Fig. 1~Figure 12, the utility model proposes a kind of switching value automatic test device, comprising:
Controller 4, controller 4 are connected with several input interfaces 2, several output interfaces 3 for connecting with awaiting board card,
Controller 4 is connect by level conversion driving circuit 5 with output interface 3, and input interface 2 passes through bus transceiver 6
It is connect with controller 4.
Switching value automatic test device in the utility model, is provided with input interface 2, output interface on cabinet 1
3, input interface 2, output interface 3 can connect all I/O mouthfuls of awaiting board card, it is possible to reduce and connecting line, occupied space is smaller,
It operates more convenient.
By it is to be measured apply for card connect after, controller 4 pass sequentially through level conversion driving circuit 5, output interface 3 output not
With data-signal to the input terminal of awaiting board card, the data of input are transferred to board under test again by the input terminal of awaiting board card
The output terminal of card, data are passed sequentially through input interface 2 again by the output terminal of awaiting board card, bus transceiver 6 is transferred to control
Device 4 processed, controller 4 after receiving the data, will be by judging be sent to the data of awaiting board card input terminal and receive
Whether awaiting board card output terminal obtains data consistent, to judge whether awaiting board card can work normally.Entire test process
It can be operated by control display panel module 11 or the host computer being connect with USB module 10, test process may be implemented to automate,
Without manual intervention.
The output port 3 of this switching value automatic test device controls level conversion driving circuit 5 by controller 4, will
Different voltage signals sends different awaiting board card input terminals to by output port 3, can make the whole of output port 3
Port sets 1,0,1 even number position 0 of each port odd positions is set in whole ports, 0 even number position 1 of each port odd positions this four
Kind level, so as to which more accurate, more comprehensively whether test awaiting board card can work normally, test effect is more increased
Effect.
Further, controller 4 is connected with power module 7, and power module 7 includes voltage input end 71 and and voltage input end
71 sequentially connected first voltage conversion circuits 72, second voltage conversion circuit 73,
Voltage input end 71 is connect with level conversion driving circuit 5,
First voltage conversion circuit 72 is all connected with level conversion driving circuit 5, bus transceiver 6, input interface 2,
Second voltage conversion circuit 73 is connect with controller 4.
Switching value automatic test device supply voltage in the utility model is 24V, and 24V power supply turns for external 220V
24V is directly inputted, then is powered by first voltage conversion circuit 72, the chip that second voltage conversion circuit 73 is modules,
First voltage conversion circuit 72 is converted to 5V voltage by 7505 chips, and second voltage conversion circuit 73 passes through AMS1117 core
Piece is converted to 3.3V voltage, and 5V voltage can drive for bus transceiver 6, decoder 8, USB switching chip 101, level conversion
Dynamic circuit 5 and display panel module 11 are powered, and 3.3V voltage can power for controller 4, and 24V voltage can supply for output port 3
Electricity.
Further, level conversion driving circuit 5 includes metal-oxide-semiconductor driving circuit 51, the Da Lin successively connecting with controller 4
Transistor array 52, darlington transistor array 52 are connect with output interface 3,
Metal-oxide-semiconductor driving circuit 51 is provided with several, and metal-oxide-semiconductor driving circuit 51 includes metal-oxide-semiconductor 511, the grid of metal-oxide-semiconductor 511
Pole is connect with controller 4, and drain electrode and first voltage conversion circuit 72, the darlington transistor array 52 of metal-oxide-semiconductor 511 are all connected with,
The source electrode of metal-oxide-semiconductor 511 is connected to ground.
Voltage signal is transferred to output port 3 by level conversion driving circuit 5 by the controller 4 in the utility model,
The input terminal of awaiting board card is transferred to by output port 3 again, when voltage signal is transmitted to the grid of metal-oxide-semiconductor 511 by controller 4
Afterwards, pin corresponding with the darlington transistor array 52 of drain electrode connection of metal-oxide-semiconductor 511 can obtain high level or low level, reach
The corresponding output pin of Islington transistor array 52 can export low level or high level, i.e., draw with darlington transistor array input
The level of foot is opposite.The model ULN2003 of darlington transistor array 52 is high-voltage great-current darlington transistor array system
Column product, the temperature range of adaptation is wide, carrying load ability is stronger, can achieve the requirement of high-speed high-power drive system.
Further, several bus transceivers 6 are also connected with decoder 8, and decoder 8 passes through Schmidt trigger 9 and control
Device 4 connects.
The pull-up resistor of the public termination 5V of each of the input port 2 of this switching value automatic test device, awaiting board card
Input port 2 of the signal of output terminal Jing Guo the present apparatus, then the bus transceiver 6 by connecting with input port 2 is by signal
It is transmitted to controller 4 to judge for controller 4, but bus transceiver 6 needs the signal transmitted that can select by 8 timesharing of decoder
Send controller 4 to again.
Further, controller 4 is connected with USB module 10, and USB module 10 includes transferring with the sequentially connected USB of controller 4
Chip 101, usb 1 02,
USB switching chip 101, usb 1 02 are connect with first voltage conversion circuit 72.
Further, controller 4 is also connected with display panel module 11, downloading and debugging interface 12 and peripheral circuit 13.
Further, input interface 2, output interface 3 are arranged on cabinet 1, and the inside of cabinet 1 is arranged in controller 4,
It is provided with liquid crystal display 14 by input interface 2, output interface 3,
The quantity of input interface 2 is equal with the quantity of output interface 3,
Liquid crystal display 14 is connect with display panel module 11.
Controller 4 in the utility model is also connected with USB module 10, USB module 10 can by test device with it is upper
Machine connects, and realizes data interaction, so as to monitor the operation and real time data of test device by host computer, not
It requires manual intervention.
Port data in the utility model can also be checked by the liquid crystal display 14 being arranged on cabinet 1, simple
Folk prescription is just.
Further, the concrete model of controller 4 is STM32F429IGT6, and the concrete model of bus transceiver 6 is
74LS245, the concrete model of decoder 8 are 74LS138, and the concrete model of Schmidt trigger 9 is 74HC14, and Darlington is brilliant
The concrete model of body pipe array 52 is ULN2003, and the concrete model of USB switching chip 101 is CH340G.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (8)
1. a kind of switching value automatic test device, which is characterized in that including controller (4), controller (4) connection is useful
In several input interfaces (2), several output interfaces (3) that are connect with awaiting board card,
The controller (4) is connect by level conversion driving circuit (5) with the output interface (3), the input interface (2)
It is connect by bus transceiver (6) with the controller (4).
2. a kind of switching value automatic test device according to claim 1, which is characterized in that the controller (4) is even
It is connected to power module (7), the power module (7) includes voltage input end (71) and successively connects with the voltage input end (71)
First voltage conversion circuit (72), the second voltage conversion circuit (73) connect,
The voltage input end (71) connect with the level conversion driving circuit (5),
It is the first voltage conversion circuit (72) and the level conversion driving circuit (5), the bus transceiver (6), described
Input interface (2) is all connected with,
The second voltage conversion circuit (73) connect with the controller (4).
3. a kind of switching value automatic test device according to claim 2, which is characterized in that the level conversion driving
Circuit (5) includes metal-oxide-semiconductor driving circuit (51), the darlington transistor array (52) successively connecting with the controller (4), institute
Darlington transistor array (52) is stated to connect with the output interface (3),
The metal-oxide-semiconductor driving circuit (51) is provided with several, and the metal-oxide-semiconductor driving circuit (51) includes metal-oxide-semiconductor (511), institute
The grid for stating metal-oxide-semiconductor (511) is connect with the controller (4), and the drain electrode of the metal-oxide-semiconductor (511) and the first voltage are converted
Circuit (72), the darlington transistor array (52) are all connected with, and the source electrode of the metal-oxide-semiconductor (511) is connected to ground.
4. a kind of switching value automatic test device according to claim 3, which is characterized in that several bus transmitting-receivings
Device (6) is also connected with decoder (8), and the decoder (8) is connect by Schmidt trigger (9) with the controller (4).
5. a kind of switching value automatic test device according to claim 4, which is characterized in that the controller (4) is even
Be connected to USB module (10), the USB module (10) include with the controller (4) sequentially connected USB switching chip (101),
USB interface (102),
USB switching chip (101), the USB interface (102) are connect with the first voltage conversion circuit (72).
6. a kind of switching value automatic test device according to claim 1, which is characterized in that the controller (4) is also
It is connected with display panel module (11), downloading and debugging interface (12) and peripheral circuit (13).
7. a kind of switching value automatic test device according to claim 6, which is characterized in that the input interface (2),
The output interface (3) is arranged on cabinet (1), and the controller (4) is arranged in the inside of the cabinet (1),
Liquid crystal display (14) are provided with by the input interface (2), the output interface (3),
The quantity of the input interface (2) is equal with the quantity of the output interface (3),
The liquid crystal display (14) connect with the display panel module (11).
8. a kind of switching value automatic test device according to claim 5, which is characterized in that the controller (4)
Concrete model is STM32F429IGT6, and the concrete model of the bus transceiver (6) is 74LS245, the decoder (8)
Concrete model is 74LS138, and the concrete model of the Schmidt trigger (9) is 74HC14, the darlington transistor array
(52) concrete model is ULN2003, and the concrete model of USB switching chip (101) is CH340G.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821382164.5U CN208907906U (en) | 2018-08-27 | 2018-08-27 | A kind of switching value automatic test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821382164.5U CN208907906U (en) | 2018-08-27 | 2018-08-27 | A kind of switching value automatic test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208907906U true CN208907906U (en) | 2019-05-28 |
Family
ID=66613172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821382164.5U Active CN208907906U (en) | 2018-08-27 | 2018-08-27 | A kind of switching value automatic test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208907906U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531256A (en) * | 2019-07-26 | 2019-12-03 | 大连理工大学 | A kind of darlington array simulation electromagnetic relay switch amount output system |
-
2018
- 2018-08-27 CN CN201821382164.5U patent/CN208907906U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110531256A (en) * | 2019-07-26 | 2019-12-03 | 大连理工大学 | A kind of darlington array simulation electromagnetic relay switch amount output system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105510811A (en) | Switch matrix test system based on bus transfer | |
| CN109285526A (en) | Charging circuit, display panel driving circuit and display device | |
| CN208907906U (en) | A kind of switching value automatic test device | |
| CN203396869U (en) | Integrated test equipment | |
| CN103412808A (en) | Satellite task subsystem testing equipment based on field programmable gate array (FPGA) architecture | |
| CN201230204Y (en) | Logic test device for microcomputer type protection monitoring module in power supply and distribution system | |
| CN103558840B (en) | Build the controller simulation experimental standard interface in kind of RTDS and the method for circuit thereof | |
| CN105702187A (en) | Interface circuit and test device | |
| CN101813733B (en) | MSP85 mode panel-selecting driving tester | |
| CN209280909U (en) | The automatic calibration tool in eight channels | |
| CN204479985U (en) | PLC Simulation Experimental Platform I/O interface circuit | |
| CN205826811U (en) | A kind of aging testing system | |
| CN101968519B (en) | Electric control reliability automatic testing device | |
| CN201421560Y (en) | Electrical control reliability automatic test device | |
| CN206610992U (en) | A kind of USB control circuit and its hub with charge function | |
| CN104914346B (en) | The non-principle system safety testing device and its method of testing of a kind of general digital plug-in unit | |
| CN203149112U (en) | Hand-operated tool for calibrating electric energy meter | |
| CN104215135B (en) | A kind of pair of bullet is with the test unit adapter interface surveyed and method for designing thereof | |
| CN207051711U (en) | Door ceiling light test device for subway safe door | |
| CN206863570U (en) | A kind of novel photoelectric isolation sensor AM access module | |
| CN209401292U (en) | Protection circuit, driving device and liquid crystal display device | |
| CN107179520B (en) | Test control method and device for secondary electron module of zero-flux current transformer | |
| CN207570576U (en) | Measurement and calibration adaptive device and system | |
| CN205281253U (en) | Detection apparatus for wind generating set controller | |
| CN105374265B (en) | A kind of high performance liquid chromatograph experimental teaching model of cobalt and experimental method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710000, Zone C, 4th Floor, Room 10101, Unit 1, Building 1, No. 6, Zone C, Entrepreneurship Research and Development Park, No. 69 Jinye Road, High tech Zone, Xi'an City, Shaanxi Province Patentee after: Xi'an XD Digital Technology Co.,Ltd. Address before: 710000, Zone C, 4th Floor, Room 10101, Unit 1, Building 1, No. 6, Zone C, Entrepreneurship Research and Development Park, No. 69 Jinye Road, High tech Zone, Xi'an City, Shaanxi Province Patentee before: XI'AN DUANYI TECHNOLOGY Co.,Ltd. |