CN204595846U - Data acquisition system (DAS) - Google Patents
Data acquisition system (DAS) Download PDFInfo
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- CN204595846U CN204595846U CN201520329661.9U CN201520329661U CN204595846U CN 204595846 U CN204595846 U CN 204595846U CN 201520329661 U CN201520329661 U CN 201520329661U CN 204595846 U CN204595846 U CN 204595846U
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- datalogger
- expansion slot
- interface
- collecting card
- data collecting
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Abstract
The utility model relates to a kind of data acquisition system (DAS), described system comprises: datalogger, data collecting card and serial interface, wherein said datalogger comprises multiple expansion slot and the serial ports be connected with expansion slot respectively, corresponding multiple acquisition channel in described expansion slot, described data collecting card comprises round and inserts and insert with described round the serial ports be connected, described expansion slot is connected with serial interface one end, described round is inserted and is connected with the other end of described serial interface, described datalogger is communicated with described data collecting card by serial interface, image data is sent to described datalogger by described serial interface by described data collecting card, described datalogger stores described image data.Native system can expand acquisition channel and by acquired data storage at same datalogger.
Description
Technical field
The utility model relates to data acquisition technology field, particularly relates to a kind of data acquisition system (DAS).
Background technology
Datalogger is that a kind of sensor that utilizes obtains collection result and these collection result are stored electronic device for subsequent use, is generally used for the physical quantitys such as collecting temperature, pressure, electric current, speed, tension force and displacement.The acquisition channel quantity of traditional datalogger is changeless.If user needs to increase acquisition channel, a datalogger will be increased, and collection result is stored in different dataloggers, causes inconvenience to the user thus.
Utility model content
Based on this, be necessary for above-mentioned technical matters, provide a kind of and can expand acquisition channel and by the data acquisition system (DAS) of acquired data storage at same datalogger.
A kind of data acquisition system (DAS), described system comprises: datalogger, data collecting card and serial interface, wherein said datalogger comprises multiple expansion slot and the serial ports be connected with expansion slot respectively, described data collecting card comprises round and inserts and insert with described round the serial ports be connected, serial interface is integrated with in described expansion slot, described round is inserted and is connected with described serial interface, described datalogger is communicated with described data collecting card by serial interface, multiple acquisition channel is also comprised in described data collecting card, data acquisition is carried out by described acquisition channel, and by described serial interface, image data is sent to described datalogger, described datalogger stores described image data.
Wherein in an embodiment, described serial ports is RS485.
Wherein in an embodiment, described serial interface is RS485 interface.
Wherein in an embodiment, described datalogger comprises 8 expansion slot.
Wherein in an embodiment, described expansion slot comprises multiple stitch, and wherein part stitch exports high level or low level.
Wherein in an embodiment, output high level or low level stitch quantity are 6.
Wherein in an embodiment, described round is inserted and is comprised multiple I/O interface pin, wherein high level or low level described in the identification of part I/O interface pin.
Wherein in an embodiment, identify that the quantity of described high level or low level I/O interface pin is 6.
Above-mentioned data acquisition system (DAS), because the expansion slot in datalogger is connected with serial ports, it is also be connected with serial ports that round in data collecting card is inserted, serial interface is integrated with in expansion slot, inserted by round and be connected with serial interface, data collecting card can be connected on datalogger easily thus.Owing to also comprising multiple acquisition channel in data collecting card, data acquisition is carried out by acquisition channel, and by serial interface, image data is sent to datalogger and stores, thus achieve the expansion of acquisition channel in datalogger, and can by the acquired data storage of multiple data collecting card on same datalogger.
Accompanying drawing explanation
Fig. 1 is the structural representation of data acquisition system (DAS) in an embodiment;
Fig. 2 is the rear view of datalogger in an embodiment;
Fig. 3 is the rear view of data collecting card in an embodiment.
Embodiment
A kind of data acquisition system (DAS), for gathering multiple physical quantitys such as temperature, pressure and displacements.In one embodiment, as shown in Figure 1, a kind of structural representation of data acquisition system (DAS) is provided.This system comprises datalogger 102, data collecting card 104 and serial interface 106.Wherein datalogger 102 comprises display screen, CPU (Central Processing Unit, central processing unit), storer, USB (UniversalSerial Bus, USB (universal serial bus)) interface, serial ports, network interface and expansion slot, data collecting card 104 comprises Acquisition Circuit, MCU, serial ports and round and inserts.As shown in Figure 2, be the rear view of datalogger, datalogger 102 comprises multiple expansion slot 112 and the serial ports (not marking in figure) be connected with expansion slot respectively, and expansion slot comprises multiple stitch 122.Serial ports is RS485, and serial interface 106 is RS485 interface.The positive pole pin hole of RS485 interface is connected with the stitch of two in expansion slot respectively with negative pole pin hole, thus by RS485 Interface integration in expansion slot.As shown in Figure 3, for the rear view of data collecting card, data collecting card 104 comprises round and inserts 114 and insert with round the serial ports (not marking in figure) be connected, and round is inserted 114 and comprised multiple IO (Input/Output, I/O) interface pin 124.Serial port circuit in data collecting card 104 draws positive pole pin hole and negative pole pin hole, two stitch be connected with negative pole pin hole with the positive pole pin hole of RS485 interface in corresponding expansion slot respectively.Make thus data collecting card to access after expansion slot namely by RS485 Interface realization with the connection of datalogger.Datalogger 102 is communicated with data collecting card 104 by serial interface 106.Data collecting card 104 also comprises multiple acquisition channel (also can be called for short passage, not mark in figure), carries out data acquisition by acquisition channel.Image data is sent to datalogger 102 by serial interface 106 by data collecting card 104, datalogger 102 storage of collected data.Thus achieve the expansion of acquisition channel in datalogger, and can by the acquired data storage of multiple data collecting card on same datalogger.
Concrete, datalogger 102 comprises 8 expansion slot, a corresponding data collecting card in each expansion slot.Corresponding 8 acquisition channels of each data collecting card, and then can think that each expansion slot has corresponding passage.Each passage has corresponding numbering, channel number corresponding to each expansion slot is fixing, such as, in the face of expansion slot is followed successively by from the lower left corner to the upper right corner: corresponding first expansion slot of 1-8 passage, corresponding second expansion slot of 9-16 passage, corresponding 3rd expansion slot of 17-24 passage, corresponding 4th expansion slot of 25-32 passage, corresponding 5th expansion slot of 33-40 passage, corresponding 6th expansion slot of 41-48 passage, corresponding 7th expansion slot of 49-56 passage, corresponding 8th expansion slot of 57-64 passage.In expansion slot, part stitch exports high level or low level.Concrete, the stitch in expansion slot is 32pin (namely 32) double-row needle, powers, communicates and identify the address etc. of expansion slot for digital recorder.Output high level or low level stitch are the addresses for identifying expansion slot, and preferably, output high level or low level stitch quantity are 6.In data collecting card, I/O interface pin identification high level or low level, for determining the address of data collecting card.Preferably, the quantity of identification high level or low level I/O interface pin is 6.
The principle of work of data acquisition system (DAS) is as follows:
Datalogger is started working after powering on, and datalogger can send addressing request to 8 expansion slot circulations, if receive response message, then can confirm have data collecting card to be linked into datalogger by RS485 interface.Concrete, utilize wherein 6 stitch in expansion slot to export high level or low level, to obtain the combination of 61 and/or 0, such as 000000,000001,000010,000011,000100,000101 etc.These combinations can as address corresponding to expansion slot.Each expansion slot has unique address.Data collecting card identifies these high level and/or low level combination by drawing 6 I/O interface pins, and then determines the address of data collecting card according to these combinations.Datalogger obtains the response of data collecting card, can confirm that data collecting card is linked in datalogger after sending addressing request to expansion slot.Datalogger sends data acquisition instructions by RS485 interface to data collecting card, and data collecting card carries out data acquisition according to this data acquisition instructions, and image data is sent to datalogger by RS485 interface stores.Due to the accessible data collecting card of each expansion slot, corresponding 8 passages of each data collecting card, thus achieve the expansion of datalogger number of channels, and can by the acquired data storage in multiple data collecting card in same datalogger.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (8)
1. a data acquisition system (DAS), it is characterized in that, described system comprises: datalogger, data collecting card and serial interface, wherein said datalogger comprises multiple expansion slot and the serial ports be connected with expansion slot respectively, described data collecting card comprises round and inserts and insert with described round the serial ports be connected, serial interface is integrated with in described expansion slot, described round is inserted and is connected with described serial interface, described datalogger is communicated with described data collecting card by serial interface, multiple acquisition channel is also comprised in described data collecting card, data acquisition is carried out by described acquisition channel, and by described serial interface, image data is sent to described datalogger, described datalogger stores described image data.
2. system according to claim 1, is characterized in that, described serial ports is RS485.
3. system according to claim 2, is characterized in that, described serial interface is RS485 interface, and the positive pole pin hole of described RS485 interface is connected with the stitch of two in described expansion slot respectively with negative pole pin hole.
4. system according to claim 1, is characterized in that, described datalogger comprises 8 expansion slot.
5. system according to claim 1, is characterized in that, described expansion slot comprises multiple stitch, and wherein part stitch exports high level or low level.
6. system according to claim 5, is characterized in that, output high level or low level stitch quantity are 6.
7. system according to claim 5, is characterized in that, described round is inserted and comprised multiple I/O interface pin, wherein high level or low level described in the identification of part I/O interface pin.
8. system according to claim 7, is characterized in that, identifies that the quantity of described high level or low level I/O interface pin is 6.
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| CN201520329661.9U CN204595846U (en) | 2015-05-20 | 2015-05-20 | Data acquisition system (DAS) |
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| CN201520329661.9U CN204595846U (en) | 2015-05-20 | 2015-05-20 | Data acquisition system (DAS) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291357A (en) * | 2016-08-01 | 2017-01-04 | 哈尔滨工业大学 | Multichannel buffer data acquisition system for fan monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291357A (en) * | 2016-08-01 | 2017-01-04 | 哈尔滨工业大学 | Multichannel buffer data acquisition system for fan monitor |
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