CN201732158U - Self-checking device - Google Patents
Self-checking device Download PDFInfo
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- CN201732158U CN201732158U CN2010202900416U CN201020290041U CN201732158U CN 201732158 U CN201732158 U CN 201732158U CN 2010202900416 U CN2010202900416 U CN 2010202900416U CN 201020290041 U CN201020290041 U CN 201020290041U CN 201732158 U CN201732158 U CN 201732158U
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Abstract
The utility model discloses a self-checking device, which is connected with a PXI case, and comprises a switch group and a decoder, wherein one end of the switch group is connected with the PXI case and the decoder, and the other end is connected with a power supply interface of the PCI case through an insulating mode. The self-checking device supplies power through adding and fixing a portable machine, and does self-recovery insurance in the inner portion of the PXI case, and a power supply is insulated in the self-checking device after outputting. The self-checking device checks analog signals through the switch group by self, and can achieve self-checking of a serial port and a CAN port through transferring signals in the inner portion of the self-checking device. The self-checking device has the advantages that the circuit is simple, the practical applicability is strong, another power supply circuits are not needed to be further arranged, the use is convenient, and the self-checking device greatly has practical value.
Description
Technical field
The utility model relates to a kind of diagnostic device, particularly relates to a kind of device that the PXI cabinet is carried out oneself's detection.
Background technology
Along with the sustainable development of measuring technology, the demand that makes up hyperchannel, miniaturization collection in worksite equipment, function test system is more and more paid close attention to based on the high-performance of PXI bus, high-precision solution also in continuous increase.
The PXI cabinet is the cabinet that is used to provide measurement and automation application function, it occupies in practical application has important position, and in some product tests and proof procedure, test macro must possess stable test environment, to possess real-time response characteristic, to promote test performance and reliability.In case but this PXI cabinet goes wrong in test process, the failure or the not high situation of measuring accuracy that will certainly cause testing take place.
Therefore, along with continuous application and the development of PXI technology in field tests, for the PXI cabinet of this PXI technology of application, it more needs one to stablize with high performance, and convenient and practical self detecting function is with the sustainable development of adaptive testing technology and client's demand.
The utility model content
In view of the present situation that existing PXI cabinet exists, fundamental purpose of the present utility model is to provide a kind of and can detects PXI cabinet detector, and is simple in structure, realizes being easy to self-checking unit.
In order to achieve the above object, self-checking unit described in the utility model has adopted following technical proposals:
Described self-checking unit is connected with the PXI cabinet, and this self-checking unit comprises switches set and code translator, and described switches set one end connects PXI cabinet and code translator, and the other end then links to each other by the power interface of isolation method with the PXI cabinet.
Described PXI cabinet comprises switch module, multimeter module, simulation isolated location, 28 way word isolated locations, 4 road TTL isolated locations, digital I/O module, serial communication modular and CAN communication module, wherein, described multimeter module links to each other with the simulation isolated location, described simulation isolation also also links to each other with 4 road TTL isolated locations and receives 4 road TTL isolation signals, and described 28 way word isolated locations all are connected with described digital I/O module with 4 road TTL isolated locations.
Described switch module is provided with external low frequency signaling interface and digital interface.
Described serial communication modular is provided with communication interface.
Described CAN communication module is provided with control interface.
Described switches set is made up of a plurality of switches, and these a plurality of switch one ends link to each other respectively with the external low frequency signaling interface and the digital interface of PXI cabinet.
Described code translator links to each other with described communication interface.
Self-checking unit described in the utility model has the following advantages:
1) circuit is simple, and is practical;
By the power supply of PXI cabinet, need not to establish in addition power circuit, easy to use.
Description of drawings
Fig. 1 is the connection diagram of self-checking unit described in the utility model and PXI cabinet.
Embodiment
Come self-checking unit described in the utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment, but its qualification of not opposing:
With reference to shown in Figure 1, self-checking unit described in the utility model wherein, comprises that the switches set 10 and the end that are made of a plurality of switches connect the code translator 11 that switches set 10 other ends link to each other with the PXI cabinet in order to the PXI cabinet is carried out self check.
In actual the enforcement, at the PXI cabinet described in the utility model for comprising switch module, multimeter module, simulation isolated location, 28 way word isolated locations, 4 road TTL isolated locations, digital I/O module, serial communication modular and CAN communication module; Wherein, switch module is provided with and is respectively arranged with the first external low frequency signaling interface XS1 and the second external low frequency signaling interface XS2; Described multimeter module is for being connected in the simulation isolated location; Described 28 way word isolated locations are connected with described digital I/O module respectively with 4 road TTL isolated locations, and are respectively arranged with digital interface XS3 on this 28 way word isolated location and 4 road TTL isolated locations; Described serial communication modular then links to each other with code translator 11 1 ends, and this module is provided with communication interface XS4 and described CAN communication module is provided with control interface XS5.
In addition, on described PXI cabinet, also be provided with power interface XS6
Described simulation isolated location is connected in 4 road TTL isolated locations, and receives 4 road TTL control signals.
Described switches set 10 1 ends are connected with digital interface XS3 with the first external low frequency signaling interface XS1, the second external low frequency signaling interface XS2 respectively.
When the PXI cabinet being carried out serial ports and the self check of CAN port, its concrete self check process is as follows:
1) port with the PXI cabinet links to each other with a main control computer (not shown) by netting twine, wherein, the test procedure of corresponding serial ports and CAN port is installed in the described main control computer;
2) digital interface with the PXI cabinet links to each other with the code translator of self-checking unit by umbilical cable.
3) on main control computer operation to the test procedure of serial ports and CAN port;
4) further control code translator 11, with the reception of serial ports with send pin and carry out short circuit, realize the internal loopback process of serial ports, and then realize self check serial ports; Simultaneously, further control the CAN port and connect, be about to H, the L line difference short circuit of CAN port, realize mutual transmission and receiving course between port, and then realize self check the CAN port at the circuit of self-checking unit.
When the Digital I passage was carried out self check, its process was as follows:
1) port with the PXI cabinet links to each other with main control computer, and the test procedure of test Digital I passage wherein is installed in the main control computer;
2) communication interface with the PXI cabinet links to each other with self-checking unit by umbilical cable;
3) digital interface with the PXI cabinet is connected with self-checking unit by the Digital I data cable;
4) test procedure of operation test Digital I passage on main control computer;
5) one of passage of described test procedure is made as output, other is made as input;
6) open the power switch of self-checking unit, this moment, the user can see that two pilot lamp of self-checking unit are bright;
7) passage by described test procedure switch and the software panel of test procedure on the normal condition of pilot lamp check dight IO passage, wherein, described Digital I passage utilizes the passage of test procedure to switch by binary decoding.
When analog channel was carried out self check, process was as follows:
1) port with the PXI cabinet links to each other with main control computer, wherein, the analog channel test procedure is installed in the main control computer;
2) communication interface with the PXI cabinet links to each other with self-checking unit by umbilical cable;
3) the first external low frequency signaling interface with the PXI cabinet links to each other with self-checking unit by the analog input data cable with the second external low frequency signaling interface;
4) on main control computer, move test procedure;
5) passage with described test is made as output;
6) open the power switch of self-checking unit, this moment, the user can see that two pilot lamp of self-checking unit are bright;
7) set attenuation ratio, if analog channel has 32, what then preceding 28 passages added is the 24v DC voltage, so attenuation ratio can be made as 1: 3.
Wherein, code translator 11 coding keys.
| Sequence number | A2A1AO? | Explanation |
| 0? | 000? | Disconnect |
| 1? | 001? | Voltage isolation: VO=VIN |
| 2? | 010? | Voltage isolation: VO=VIN/2 |
| 3? | 011? | Voltage isolation: VO=VIN/3 |
| 4? | 100? | Voltage isolation: VO=VIN/6 |
| 5? | 101? | Disconnect |
| 6? | 110? | Disconnect |
| 7? | 111? | Electric current is isolated: VO (V)=I (A) * 200-0.05A＜I＜+0.05A |
Claims (7)
1. a self-checking unit is connected with the PXI cabinet, it is characterized in that, comprises switches set and code translator, and described switches set one end connects PXI cabinet and code translator, and the other end then links to each other by the power interface of isolation method with the PXI cabinet.
2. according to the described self-checking unit of claim 1, it is characterized in that, described PXI cabinet comprises switch module, multimeter module, simulation isolated location, 28 way word isolated locations, 4 road TTL isolated locations, digital I/O module, serial communication modular and CAN communication module, wherein, described multimeter module links to each other with the simulation isolated location, described simulation isolation also also links to each other with 4 road TTL isolated locations and receives 4 road TTL isolation signals, and described 28 way word isolated locations all are connected with described digital I/O module with 4 road TTL isolated locations.
3. according to the described self-checking unit of claim 2, it is characterized in that described switch module is provided with external low frequency signaling interface and digital interface.
4. according to the described self-checking unit of claim 2, it is characterized in that described serial communication modular is provided with communication interface.
5. according to the described self-checking unit of claim 2, it is characterized in that described CAN communication module is provided with control interface.
6. according to the described self-checking unit of claim 2, it is characterized in that described code translator links to each other with described communication interface.
7. according to claim 1 or 2 described self-checking units, it is characterized in that described switches set is made up of a plurality of switches, these a plurality of switch one ends link to each other respectively with the external low frequency signaling interface and the digital interface of PXI cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202900416U CN201732158U (en) | 2010-08-10 | 2010-08-10 | Self-checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202900416U CN201732158U (en) | 2010-08-10 | 2010-08-10 | Self-checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201732158U true CN201732158U (en) | 2011-02-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202900416U Expired - Fee Related CN201732158U (en) | 2010-08-10 | 2010-08-10 | Self-checking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201732158U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105446313A (en) * | 2015-09-16 | 2016-03-30 | 华锐风电科技(集团)股份有限公司 | Detection method of PLC and IO module |
| CN108344580A (en) * | 2017-01-22 | 2018-07-31 | 北京百度网讯科技有限公司 | A kind of self checking method and device of autonomous driving vehicle |
| CN108663615A (en) * | 2018-05-08 | 2018-10-16 | 张永升 | A kind of programmable automatic cycle testing platform of switching mode electric operator |
| CN109212453A (en) * | 2018-10-10 | 2019-01-15 | 深圳德晋科技有限公司 | Portable leakage current tester calibrating installation |
| CN112904256A (en) * | 2021-01-27 | 2021-06-04 | 胜达克半导体科技(上海)有限公司 | Circuit self-checking method of automatic tester |
-
2010
- 2010-08-10 CN CN2010202900416U patent/CN201732158U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105446313A (en) * | 2015-09-16 | 2016-03-30 | 华锐风电科技(集团)股份有限公司 | Detection method of PLC and IO module |
| CN105446313B (en) * | 2015-09-16 | 2018-04-27 | 华锐风电科技(集团)股份有限公司 | A kind of detection method of PLC and I/O module |
| CN108344580A (en) * | 2017-01-22 | 2018-07-31 | 北京百度网讯科技有限公司 | A kind of self checking method and device of autonomous driving vehicle |
| CN108344580B (en) * | 2017-01-22 | 2020-09-29 | 北京百度网讯科技有限公司 | Self-checking method and device for automatic driving automobile |
| CN108663615A (en) * | 2018-05-08 | 2018-10-16 | 张永升 | A kind of programmable automatic cycle testing platform of switching mode electric operator |
| CN109212453A (en) * | 2018-10-10 | 2019-01-15 | 深圳德晋科技有限公司 | Portable leakage current tester calibrating installation |
| CN112904256A (en) * | 2021-01-27 | 2021-06-04 | 胜达克半导体科技(上海)有限公司 | Circuit self-checking method of automatic tester |
| TWI763565B (en) * | 2021-01-27 | 2022-05-01 | 大陸商勝達克半導體科技（上海）有限公司 | Line self-testing method of automatic test equipment |
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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: 20110202 Termination date: 20140810 |
|
| EXPY | Termination of patent right or utility model |