CN201122177Y - Generator experiment system for one PC machine driving multiple racks - Google Patents
Generator experiment system for one PC machine driving multiple racks Download PDFInfo
- Publication number
- CN201122177Y CN201122177Y CNU200720121944XU CN200720121944U CN201122177Y CN 201122177 Y CN201122177 Y CN 201122177Y CN U200720121944X U CNU200720121944X U CN U200720121944XU CN 200720121944 U CN200720121944 U CN 200720121944U CN 201122177 Y CN201122177 Y CN 201122177Y
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- channel switching
- generator
- signal
- test system
- drags
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Abstract
The utility model is suitable for the generator test field, and provides a generator test system of a plurality of desk frames drawn by a PC computer. The generator test system comprises a desk frame part used for collecting the test signal of a generator, the PC computer used for receiving the test signal and sending the order signal, a data acquisition card connected with the PC computer, and a channel switching plate used for the mutual switch between the port of the data acquisition card and the port of a general aeronautic pin, wherein, the data acquisition card is used for switching the signal which is transmitted to the PC computer by the desk frame part to the signal mode that can be recognized by the PC computer, and leading the order signal sent by the PC computer to be switched to the signal mode which can be recognized by the desk frame part. In the generator test system, when the PC computer draw a plurality of desk frames by adopting a 485 communication network way, the problems that a system singlechip interface drive circuit is complex, a data packet assembling and disassembling protocol is not easily built, and the hidden trouble of the system exception response caused by the communication error code because of the interference exists are solved.
Description
Technical field
The utility model belongs to the generator test field, relates in particular to the generator test system that an a kind of PC drags a plurality of stands.
Background technology
Along with developing rapidly of auto industry, each automobile vendor constantly utilizes new technology that the automobile Related product is carried out improvement in performance, and particularly outstanding to the improvement in performance of automobile current generator.In order to verify the performance of generator, market is very urgent to the demand of generator test equipment.
Traditional generator durable test stand is divided into dual mode: 1, adopt the PLC control mode to realize.This mode drives a stand by industrial controlled machine, and when adopting this mode, to the expansion of stand quantity difficulty, is difficult to drive a plurality of stands by an industrial computer, promptly one drags many stands, and safeguards comparatively inconvenience.2, adopt 485 communication networks to realize in conjunction with computer control mode.And need use 485 communications protocol when adopting 485 communication networks, this agreement is a kind of serial port communicating protocol.Adopt this mode to expand to stand quantity, can realize that one drags many stands, but all communication datas between industrial computer and the stand all transmit through 485 communication networks, so cause system's interface microcontroller driving circuit complexity, packing data is separated packet protocol and should not be built, and has the hidden danger that causes communication error code so that system exception response because of interference.
The utility model content
The purpose of this utility model is to provide an a kind of PC to drag the generator test system of a plurality of stands, be intended to solve when adopting 485 communication networks to realize that in conjunction with computer control mode a PC drags a plurality of stand, system's interface microcontroller driving circuit complexity, packing data is separated packet protocol and should not be built, and has the problem that causes the hidden danger of communication error code so that system exception response because of interference.
The utility model is achieved in that an a kind of PC drags the generator test system of a plurality of stands, and described system comprises:
The stand part is used to gather the test signal of generator;
PC is used to receive described test signal, and sends command signal;
Data collecting card, link to each other with described PC, be used for described stand is partly passed to the signal mode that the conversion of signals of described PC becomes described PC to discern, and convert the command signal that described PC sends to signal mode that described stand part can be discerned; And
The channel switching plate, one end of described channel switching plate is general aviation plug port, described general aviation plug port partly links to each other with stand, and the other end of described channel switching plate links to each other with described data collecting card, is used for the port of data collecting card and the mutual conversion between the general aviation plug port.
In the utility model, link to each other with PC by data collecting card, data collecting card partly passes to the signal mode that the conversion of signals of PC becomes PC to discern with stand, reach the command signal that PC is sent and convert the signal mode that the stand part can be discerned to, and, link to each other the mutual conversion between the port of realization data collecting card and the general aviation plug port respectively with stand part and data collecting card by the channel switching plate.Like this, when just having avoided adopting 485 communication networks to realize that in conjunction with computer control mode a PC drags a plurality of stand, system's interface microcontroller driving circuit complexity, packing data is separated packet protocol and should not be built, and has the problem that causes the hidden danger of communication error code so that system exception response because of interference.
Description of drawings
Fig. 1 is that the PC that the utility model provides drags the structural representation of the generator test system of a stand;
Fig. 2 is that the PC that the utility model provides drags the structural representation of the generator test system of a plurality of stands.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
In the utility model, link to each other with PC by data collecting card, data collecting card partly passes to the signal mode that the conversion of signals of PC becomes PC to discern with stand, reach the command signal that PC is sent and convert the signal mode that the stand part can be discerned to, and, link to each other the mutual conversion between the port of realization data collecting card and the general aviation plug port respectively with stand part and data collecting card by the channel switching plate.Like this, when just having avoided adopting 485 communication networks to realize that in conjunction with computer control mode a PC drags a plurality of stand, system's interface microcontroller driving circuit complexity, packing data is separated packet protocol and should not be built, and has the problem that causes the hidden danger of communication error code so that system exception response because of interference.Wherein, aviation plug is the general connection plug of industrial circle, and an end that generally will comprise the lock screw turncap is called female, and Dui Ying splicing ear partly is called male with it.
The PC that Fig. 1 shows the utility model to be provided drags the structure of the generator test system of a stand, and this generator test system comprises: PC, data collecting card, channel switching plate and stand part 1.
PC links to each other with data collecting card, and data collecting card links to each other with the channel switching plate, is linked to each other with each device of stand part 1 by the channel switching plate.Wherein, an end of this channel switching plate is general aviation plug port, and this general aviation plug port links to each other with each device of stand part 1, and the other end of channel switching plate links to each other with data collecting card.
(Analogue Input AI) is input to data collecting card to the test signal harvester with the test signal that the collects analog input port by the channel switching plate.The signal mode that data collecting card becomes PC to discern this conversion of signals, and the input of the signal after will changing PC.Like this, PC has just obtained the relevant test figure of generator.Wherein, data collecting card can be 6221 capture cards or 6229 capture cards, stand part 1 can be passed to the signal mode that the conversion of signals of described PC becomes described PC to discern.Wherein, 6221 capture cards and 6229 capture cards are the data collecting card of NI data collecting card M series.
Wherein, the channel switching plate is used for the port of data collecting card and the conversion between the general aviation plug port, for example realizes the 68P port of 6221 integrated circuit boards and the conversion between the general aviation plug port.As embodiment of the present utility model, can on the channel switching plate, increase element or circuit with defencive function, think that data collecting card provides the front-end protection measure.For example: by on the channel switching plate, increasing stabilivolt, thereby can carry out voltage stabilizing to the data capture card; By on the channel switching plate, increasing current-limiting resistance, thereby can carry out current limliting to the data capture card.Certainly, element or the circuit with defencive function also can be installed on the circuit board independently.
In the process that generator is tested, PC not only needs to obtain test signal from stand part 1, and the signal of need constantly giving an order, so that stand part 1 is controlled.
The PC signal of giving an order, and send command signal to data collecting card.Wherein, this command signal is a simulating signal.Data collecting card converts this command signal to signal mode that stand part 1 can be discerned, and is sent to the channel switching plate through the port of data collecting card.(AnalogueOutput, AO) port sends the frequency converter of command signal I ' to stand part 1 in channel switching plate utilization simulation output.Thereby PC can come the control of conversion device to carry out frequency conversion by command signal, thereby variable-frequency motor M changes the bel-drivenn transmission speed, thereby can change the rotating speed of tested generator F.Equally, PC can also send the command signal of digital signal form, this command signal is via data collecting card, after data collecting card converts this command signal to signal mode that stand part 1 can discern, digital input and output (DigitalInput Output by the channel switching plate, DIO) port is exported this command signal, with control A.C. contactor K1, the on off state of K2.PC can send IGBT drive plate P and the IGBT module 11 of the pulse of certain frequency to stand part 1 by counter (COUNT) port of channel switching plate, with control IGBT drive plate P and IGBT module 11.The controlled quentity controlled variable of IGBT drive plate P is the pulse signal of EDM Generator of Adjustable Duty Ratio, need to prove, can there be instantaneous pressure drop in IGBT module 11 at conducting and the variation point that ends, therefore, can increase by a voltage buffer (not shown) in stand part 1, this voltage buffer links to each other with IGBT module 11, and the instantaneous pressure drop that IGBT module 11 is produced cushions.Wherein, voltage buffer can be RCD buffer circuit (not shown) or the quick fly-wheel diode (not shown) in parallel with the load R of stand part 1.The load R of stand part 1 can be a resistance, and accumulator Vcc then provides required electric energy for stand part 1.
Like this, PC has obtained test signal, and makes response according to these test signal data, sends command signal to data collecting card, again by the path protection plate send to stand part 1 each device on.Each device is made response to command signal.The test signal harvester is the acquisition test signal once more, and delivers to PC.PC is adjusted once more, and is sent new command signal according to the data difference of the test signal of the command signal of last time and this collection, and circulation is carried out in such a way.
The PC that Fig. 2 shows the utility model to be provided drags the structure of the generator test system of a plurality of stands.Realization one is dragged and is mostly to link to each other with N data capture card by a PC, and each data collecting card can link to each other with a plurality of channel switching plates, and a channel switching plate then links to each other with a stand.One to drag the structure of many stands are simple accumulation of a plurality of one-to-one stands, and one drags the work principle of generator test system of many stands similar to the principle of work of the generator test system of one-to-one stand.Directly be connected between stand and stand, therefore, operation each other can not have influence on other stands.
For example, do one one when dragging three generator test system, for a stand: gather magnitude of voltage V
0, current value I
0, tachometer value R
0, need take 3 road AI mouths; A.C. contactor K1, K2 need take 2 road DIO mouths; IGBT drive plate P need take 1 road COUNT mouth; Simulation output order I ' need take 1 road AO mouth.When data collecting card adopted 6221 capture cards, one 6221 capture card included 16 road AI mouths, 24 road DIO mouths, and 2 road COUNT mouths, therefore 2 road AO mouths, be done a generator test system of three of dragging and need adopt 2 6221 capture cards to meet the demands.Link to each other with two 6221 capture cards with PC, and wherein one 6221 capture card links to each other with two stands, another piece 6221 capture cards link to each other with a stand.
In sum, in the utility model, link to each other with PC by data collecting card, data collecting card partly passes to the signal mode that the conversion of signals of PC becomes PC to discern with stand, reach the command signal that PC is sent and convert the signal mode that the stand part can be discerned to, and, link to each other the mutual conversion between the port of realization data collecting card and the general aviation plug port respectively with stand part and data collecting card by the channel switching plate.Like this, when just having avoided adopting 485 communication networks to realize that in conjunction with computer control mode a PC drags a plurality of stand, system's interface microcontroller driving circuit complexity, packing data is separated packet protocol and should not be built, and has the problem that causes the hidden danger of communication error code so that system exception response because of interference.By increasing protecting component or circuit, thereby provide protection for data collecting card.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (9)
1. generator test system that a PC drags a plurality of stands is characterized in that described system comprises:
The stand part is used to gather the test signal of generator;
PC is used to receive described test signal, and sends command signal;
Data collecting card, link to each other with described PC, be used for described stand is partly passed to the signal mode that the conversion of signals of described PC becomes described PC to discern, and convert the command signal that described PC sends to signal mode that described stand part can be discerned; And
The channel switching plate, one end of described channel switching plate is general aviation plug port, described general aviation plug port partly links to each other with stand, and the other end of described channel switching plate links to each other with described data collecting card, is used for the port of data collecting card and the mutual conversion between the general aviation plug port.
2. a PC as claimed in claim 1 drags the generator test system of a plurality of stands, it is characterized in that, described system also comprises:
Protecting component or circuit, described protecting component or circuit are installed on the described channel switching plate or are arranged separately on the circuit board, are used to data collecting card that protection is provided.
3. a PC as claimed in claim 1 drags the generator test system of a plurality of stands, it is characterized in that the voltage sensor of described stand part, current sensor, speed probe, and the charging indicator light pressure drop links to each other with 1 analog input port of channel switching plate respectively.
4. a PC as claimed in claim 1 drags the generator test system of a plurality of stands, it is characterized in that, the frequency converter of described stand part links to each other with the analog output mouth of described channel switching plate.
5. a PC as claimed in claim 1 drags the generator test system of a plurality of stands, it is characterized in that, two A.C. contactors of described stand part link to each other with a digital input/output port of described channel switching plate separately.
6. a PC as claimed in claim 1 drags the generator test system of a plurality of stands, it is characterized in that, the IGBT drive plate of described stand part links to each other with the counter port of described channel switching plate.
7. a PC as claimed in claim 1 drags the generator test system of a plurality of stands, it is characterized in that, described stand partly comprises a voltage buffer, described voltage buffer links to each other with the IGBT module of described stand part, is used for the instantaneous pressure drop that the IGBT module produces is cushioned.
8. a PC as claimed in claim 7 drags the generator test system of a plurality of stands, it is characterized in that, described voltage buffer be the RCD buffer circuit or with the load quick fly-wheel diode in parallel of described stand part.
9. a PC as claimed in claim 1 drags the generator test system of a plurality of stands, it is characterized in that, described PC links to each other with a plurality of data collecting cards, and described data collecting card links to each other with a plurality of channel switching plates, and described channel switching plate links to each other with a stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720121944XU CN201122177Y (en) | 2007-08-01 | 2007-08-01 | Generator experiment system for one PC machine driving multiple racks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200720121944XU CN201122177Y (en) | 2007-08-01 | 2007-08-01 | Generator experiment system for one PC machine driving multiple racks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201122177Y true CN201122177Y (en) | 2008-09-24 |
Family
ID=40009410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200720121944XU Expired - Lifetime CN201122177Y (en) | 2007-08-01 | 2007-08-01 | Generator experiment system for one PC machine driving multiple racks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201122177Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI500945B (en) * | 2013-12-17 | 2015-09-21 | Primax Electronics Ltd | Testing system of circuit board |
-
2007
- 2007-08-01 CN CNU200720121944XU patent/CN201122177Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI500945B (en) * | 2013-12-17 | 2015-09-21 | Primax Electronics Ltd | Testing system of circuit board |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080924 |