CN203012061U - An automatic switching apparatus used for multiple paths of direct-current circuits - Google Patents
An automatic switching apparatus used for multiple paths of direct-current circuits Download PDFInfo
- Publication number
- CN203012061U CN203012061U CN 201320033348 CN201320033348U CN203012061U CN 203012061 U CN203012061 U CN 203012061U CN 201320033348 CN201320033348 CN 201320033348 CN 201320033348 U CN201320033348 U CN 201320033348U CN 203012061 U CN203012061 U CN 203012061U
- Authority
- CN
- China
- Prior art keywords
- control unit
- measured piece
- power supply
- control module
- automatic switching
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Voltage And Current In General (AREA)
Abstract
The utility model discloses an automatic switching apparatus used for multiple paths of direct-current circuits. The automatic switching apparatus comprises a control unit. The control unit is connected with N measured piece power supplies. The control unit is connected with a measured piece through N independent channels. N is a natural number greater than 1. The apparatus further comprises a power supply unit connected with the control unit. The apparatus can realize the controlling of output interfaces of 64 paths at most and the controlling of each path is independent; the control unit controls the break-make states between the measured piece power supplies and the measured piece to realize the switching among the different power supplies, thereby realizing the effect that the power supplies can be switched without needing to take off the measured piece, greatly reducing the switching times and time, and increasing the measuring efficiency; and manual operations of switching of corresponding output voltage in the measuring process are prevented, and the measuring efficiency and the operation safety are increased.
Description
Technical field
The utility model relates to the power transfer device in the electronic product test process, specifically refers to a kind of automatic switching control equipment for the multi-channel DC circuit.
Background technology
The electronic product test process comprises the contents of a project such as solder joint test, local function test, complete machine functional test, System Functional Test, routine test test, destructiveness are taken a sample test, technical indicator is taken a sample test.Wherein functional test is exactly that each function of product is verified, according to the functional test use-case, test item by item, check whether product reaches the function of customer requirements, functional test Functional testing, also referred to as performance testing behavioral testing, describe and user's scheme according to product performance, operation, but the characteristic of a product of test and operation behavior satisfy design requirement to determine them.The functional test of localization software is used for verifying application programs or website and can correctly works to the targeted customer; Using suitable platform, browser and test script, will be enough good with the experience that guarantees the targeted customer, just as application program is this market development specially.Functional test is to move in the mode of expectation in order to ensure program and the test software carried out by functional requirement, guarantees to meet demand and standard by all characteristics of a system and function are all tested.Black box test or data-driven test are also named in functional test, only need to consider each function, do not need to consider inner structure and the code of whole software. general interface, framework from software product, the test case of writing out according to demand, the input data are evaluated and tested between expected results and actual result, and then propose more to make product to reach the requirement that the user uses.
In the electronic product test process of reality; usually can test the function of disparate modules part; and in the process of test, it is different that the supply voltage between disparate modules requires, and just needs the different test point of artificial switching to test in the process of test like this.This way causes whole test process complex operation, when the number of times that switches with count when more, also easily makes mistakes; If surpass the human safety voltage, the error of manual operation also may jeopardize personal security.
The utility model content
The purpose of this utility model is to provide a kind of automatic switching control equipment for the multi-channel DC circuit, solve in present electronic product functional test procedures, because the different testing power supplies that bring of the power supply of modules switch hard problem, reach the purpose that reduces switching times, improves testing efficiency.
The purpose of this utility model is achieved through the following technical solutions:
A kind of automatic switching control equipment for the multi-channel DC circuit comprises control module, is connected with N measured piece power supply on control module, and control module is connected with measured piece by the individual independently passage of N, and N is the natural number greater than 1; Also comprise the power supply unit that is connected with control module.The utility model connects N measured piece power supply by control module, be connected with measured piece by the individual independently passage of N simultaneously, realized the switching of non-communicated power supply by the on off operating mode between control module control measured piece power supply and measured piece, thereby realizing that measured piece just need not take off can Switching power, greatly reduce switching times and switching time, improved testing efficiency.
Described power supply unit comprises power circuit, and power circuit is connected with extraneous AC power by power input interface, and the output terminal of power circuit is connected with low pressure difference linear voltage regulator LDO, and the output terminal of low pressure difference linear voltage regulator LDO is connected with control module.Specifically, the main body of power supply unit is power circuit, power input interface is input to power circuit with the 220V AC power of outside, then change into the 5V direct supply and export the stable dc power supply that forms 3.3V after low pressure difference linear voltage regulator LDO processes the rectification of 5V direct supply, filtering to, this stable dc power supply is input to control module as the working power of control module.
Described control module comprises level shifter interface RS232, level shifter interface RS232 is by PC communication interface and external communication, the output port of level shifter interface RS232 is connected to micro-control unit MCU, the output port of micro-control unit MCU is connected with programmable logic device (PLD), the output terminal of programmable logic device (PLD) is connected with the I/O expanding element, and the relay group is connected with output interface; The output port of the low pressure difference linear voltage regulator LDO of power supply unit is connected with level shifter interface RS232 and micro-control unit MCU simultaneously.specifically, as preferential selection of the present utility model, can adopt level shifter interface RS232 receive the level of PC and convert it into the LVTTL level that micro-control unit MCU can mate, realize the communication between micro-control unit MCU and PC, micro-control unit MCU can send instruction to programmable logic device (PLD), the output of programmable logic device (PLD) is extended to parallel port output through the I/O expanding element, every output channel all is connected to a relay, consist of the relay group by a plurality of relays, so, any one or the on off operating mode of a plurality of relays of micro-control unit MCU in can the pilot relay group, and be connected with N measured piece power supply on output interface, output interface becomes the middle bridge that is connected between N measured piece power supply and measured piece, relay has determined that this passage is whether unimpeded or close, so, just can realize any switching of N measured piece power supply by micro-control unit MCU, and do not need refitting after the power supply dismounting, reduced the number of times that switches and counted, improved correctness, the danger of having avoided the error of manual operation to bring.
The utility model compared with prior art has following advantage and beneficial effect:
A kind of automatic switching control equipment for the multi-channel DC circuit of 1 the utility model, realized the switching of non-communicated power supply by the on off operating mode between control module control measured piece power supply and measured piece, thereby realizing that measured piece just need not take off can Switching power, greatly reduce switching times and switching time, improved testing efficiency;
A kind of automatic switching control equipment for the multi-channel DC circuit of 2 the utility model, just can realize any switching of N measured piece power supply by micro-control unit MCU, and do not need refitting after the power supply dismounting, reduced the number of times that switches and counted, improved correctness; The danger of having avoided the error of manual operation to bring;
A kind of automatic switching control equipment for the multi-channel DC circuit of 3 the utility model can be realized maximum 64 tunnel Output Interface Control, and the control on each road is all independently; Needing to avoid the operation of the corresponding output voltage of manual switching in test process, improved the security of testing efficiency and operation.
Description of drawings
Fig. 1 is the utility model theory diagram.
Embodiment
The utility model is described in further detail below in conjunction with embodiment, but embodiment of the present utility model is not limited to this.
Embodiment
as shown in Figure 1, a kind of automatic switching control equipment for the multi-channel DC circuit of the utility model, comprise control module, be connected with N measured piece power supply on control module, control module is connected with measured piece by the individual independently passage of N, N is the natural number greater than 1, adopts level shifter interface RS232 receive the level of PC and convert it into the LVTTL level that micro-control unit MCU can mate, and realizes the communication between micro-control unit MCU and PC, micro-control unit MCU can send instruction to programmable logic device (CPLD), the output of programmable logic device (CPLD) is extended to parallel port output through the I/O expanding element, every output channel all is connected to a relay, consist of the relay group by a plurality of relays, so, any one or the on off operating mode of a plurality of relays of micro-control unit MCU in can the pilot relay group, and be connected with N measured piece power supply on output interface, output interface becomes the middle bridge that is connected between N measured piece power supply and measured piece, relay has determined that this passage is whether unimpeded or close, also comprise the power supply unit that is connected with control module, the main body of power supply unit is power circuit, power input interface is input to power circuit with the 220V AC power of outside, then change into the 5V direct supply and export the stable dc power supply that forms 3.3V after low pressure difference linear voltage regulator LDO processes the rectification of 5V direct supply, filtering to, this stable dc power supply is connected with level shifter interface RS232 and the micro-control unit MCU of control module.
The above; it is only preferred embodiment of the present utility model; be not that the utility model is done any pro forma restriction, any simple modification, the equivalent variations on every foundation technical spirit of the present utility model, above embodiment done are within all falling into protection domain of the present utility model.
Claims (3)
1. automatic switching control equipment that is used for the multi-channel DC circuit, it is characterized in that: comprise control module, be connected with N measured piece power supply on control module, control module is connected with measured piece by the individual independently passage of N, and N is the natural number greater than 1; Also comprise the power supply unit that is connected with control module.
2. a kind of automatic switching control equipment for the multi-channel DC circuit according to claim 1, it is characterized in that: described power supply unit comprises power circuit, power circuit is connected with extraneous AC power by power input interface, the output terminal of power circuit is connected with low pressure difference linear voltage regulator LDO, and the output terminal of low pressure difference linear voltage regulator LDO is connected with control module.
3. a kind of automatic switching control equipment for the multi-channel DC circuit according to claim 2, it is characterized in that: described control module comprises level shifter interface RS232, level shifter interface RS232 is by PC communication interface and external communication, the output port of level shifter interface RS232 is connected to micro-control unit MCU, the output port of micro-control unit MCU is connected with programmable logic device (PLD), the output terminal of programmable logic device (PLD) is connected with the I/O expanding element, the I/O expanding element is connected with the relay group, and the relay group is connected with output interface; The output port of the low pressure difference linear voltage regulator LDO of power supply unit is connected with level shifter interface RS232 and micro-control unit MCU simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033348 CN203012061U (en) | 2013-01-23 | 2013-01-23 | An automatic switching apparatus used for multiple paths of direct-current circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320033348 CN203012061U (en) | 2013-01-23 | 2013-01-23 | An automatic switching apparatus used for multiple paths of direct-current circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203012061U true CN203012061U (en) | 2013-06-19 |
Family
ID=48603643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320033348 Expired - Fee Related CN203012061U (en) | 2013-01-23 | 2013-01-23 | An automatic switching apparatus used for multiple paths of direct-current circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203012061U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104615949A (en) * | 2015-03-02 | 2015-05-13 | 中国电子科技集团公司第五十八研究所 | Circuit designing method for improving hardware Trojan detecting resolution based on power supply isolation and hardware Trojan detecting method |
| CN105527523A (en) * | 2016-01-14 | 2016-04-27 | 苏州成科自控设备有限公司 | Actuator debugging drive switching device |
-
2013
- 2013-01-23 CN CN 201320033348 patent/CN203012061U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104615949A (en) * | 2015-03-02 | 2015-05-13 | 中国电子科技集团公司第五十八研究所 | Circuit designing method for improving hardware Trojan detecting resolution based on power supply isolation and hardware Trojan detecting method |
| CN104615949B (en) * | 2015-03-02 | 2017-08-25 | 中国电子科技集团公司第五十八研究所 | The circuit design method and the detection method to hardware Trojan horse of raising hardware Trojan horse detection resolution based on isolated from power |
| CN105527523A (en) * | 2016-01-14 | 2016-04-27 | 苏州成科自控设备有限公司 | Actuator debugging drive switching device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103925853B (en) | A kind of carrier rocket ground testing system device | |
| CN202600118U (en) | Driving power supply testing device | |
| CN104656632A (en) | Integrated interface test system and detection method for aircraft semi-physical simulation tests | |
| CN101793931A (en) | High-pressure transducer testing system | |
| CN101975937B (en) | Smart card simulator device and using method thereof | |
| CN102566567A (en) | Electronic control unit (ECU) sensor signal fault injection device for engine hardware in-the-loop simulation (HILS) system | |
| CN104239176A (en) | Multi-user multi-target remote JTAG debugging system based on Internet | |
| CN204228800U (en) | A kind of multi-channel DC microampere meter | |
| CN103376873A (en) | Minimum load current adapter circuit and mainboard | |
| CN203012061U (en) | An automatic switching apparatus used for multiple paths of direct-current circuits | |
| CN103344904B (en) | A kind of for checking simulation lithium battery method of testing and the circuit of product charging circuit | |
| CN105204485A (en) | Digital electric power stability control system tester | |
| CN201751896U (en) | ARINC429 bus testing device | |
| CN203149559U (en) | Multi-slave-structure MBUS host machine device | |
| CN105182966A (en) | Detection method of PLC and IO extension module | |
| CN204302453U (en) | A kind of switch fault positioner | |
| CN206962955U (en) | USB multiplexing control circuit | |
| CN104217767A (en) | Nonvolatile memory testing device and test method thereof | |
| CN203984446U (en) | The interchangeability testing apparatus of a kind of power information acquisition terminal local communication unit | |
| CN202840692U (en) | Intelligent grid collection terminal function detection system | |
| CN203673059U (en) | Three-phase electric energy meter simulation system | |
| CN205301522U (en) | Digit NULL tester | |
| CN102608994A (en) | Running state simulation circuit for transformer cooling device | |
| CN205942683U (en) | Self -actuated control multichannel communication station receives / sends out operating time's platform | |
| CN104880959A (en) | While-drilling measurement sensor simulation device |
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: 20130619 Termination date: 20150123 |
|
| EXPY | Termination of patent right or utility model |